Roto-Fab Intake [Archive] - Pontiac G8 Forum: G8 Forums - G8Board.com

: Roto-Fab Intake


dodson914
04-30-2008, 01:20 PM
Well, I got the intake in this morning. Just got done putting it on. Everything seems to be VERY well made. I am very impressed with the quality of the product.

I have the dish guy at the house fixing my satellite so I can't leave yet. :( Hopefully, he will be finished in the next hour and I get some driving in and see how it works. I will try to get some video up by tomorrow night. We have a lot of stuff to do tonight so I don't think it will be possible today.

Here's a pic of the installed intake. I know the top rubber piece that goes on the box is not on there. I just put it on and didn't feel like snagging another pic.

http://i214.photobucket.com/albums/cc16/dodson914/20080430_0687.jpg

_G8GT_
04-30-2008, 01:23 PM
Nice how much was that?

dodson914
04-30-2008, 01:28 PM
Nice how much was that?

http://www.g8board.com/forums/showthread.php?t=2147&highlight=roto

G8V8
04-30-2008, 01:33 PM
Nice. Looking forward to your driving impressions.

dodson914
04-30-2008, 01:40 PM
Well, I just took it around the block and I really do like it. It will need some more driving to get a decent review. I am not going to bother posting up video. With my exhaust on it's going to be pretty difficult to tell the sound change.

I think I did too much at once so I can't really accurately tell you how different it feels. I had to go to the dealer yesterday to get something fixed on the car. So I swapped out the ECM before going. So just now I installed the intake and swapped out the ECM as well. So it's hard for me to judge what did what. It definitely feels and sounds very good. There is no doubt that this flows much better the OEM one.

Zaphod B
04-30-2008, 02:07 PM
Hey, dodson, that looks really nice. I have a couple of questions for you.

I assume that the airbox is open when the hood is raised, and seals to the hood when the hood is closed - is this correct? (I'm wondering why not just design a lid for the thing)

Also, it looks like the CAI is drawing air from the same location as the stock airbox - correct?

Is is your impression that any increase in intake airflow is primarily due replacing the OEM filter with the cone filter, and everything else is engineered to accomodate the filter and maintain a closed box?

Again, that looks great, your install job looks very good.

Zaphod B
04-30-2008, 02:09 PM
Oh, BTW, that engine is pretty busy-looking without the cover, isn't it?

dodson914
04-30-2008, 02:14 PM
Hey, dodson, that looks really nice. I have a couple of questions for you.

I assume that the airbox is open when the hood is raised, and seals to the hood when the hood is closed - is this correct? (I'm wondering why not just design a lid for the thing)

Also, it looks like the CAI is drawing air from the same location as the stock airbox - correct?

Is is your impression that any increase in intake airflow is primarily due replacing the OEM filter with the cone filter, and everything else is engineered to accomodate the filter and maintain a closed box?

Again, that looks great, your install job looks very good.

I believe that is correct about the hood being closed and closing off the top of the intake. I can't be for sure on the fitment because I can't see the inside of the hood when it's closed. I have seen many intakes designed this way and I have had some with a lid. Either way is okay with me. I am sure the guys from Roto-Fab could answer this better than I.

The intake is getting the air from the same location as the OEM one. But, the opening at the bottom is FAR larger than the OEM box. So much so that I dropped a nut and it fell into the front bumper. I reached down and grabbed it through the box. My entire arm fit inside the opening at the bottom with no problem.

Zaphod B
04-30-2008, 02:19 PM
I believe that is correct about the hood being closed and closing off the top of the intake. I can't be for sure on the fitment because I can't see the inside of the hood when it's closed. I have seen many intakes designed this way and I have had some with a lid. Either way is okay with me. I am sure the guys from Roto-Fab could answer this better than I.

The intake is getting the air from the same location as the OEM one. But, the opening at the bottom is FAR larger than the OEM box. So much so that I dropped a nut and it fell into the front bumper. I reached down and grabbed it through the box. My entire arm fit inside the opening at the bottom with no problem.
Ah, I was wondering about that. So this system really unplugs the cork at the front end.

Kevin@Roto-Fab
04-30-2008, 02:33 PM
I believe that is correct about the hood being closed and closing off the top of the intake. I can't be for sure on the fitment because I can't see the inside of the hood when it's closed. I have seen many intakes designed this way and I have had some with a lid. Either way is okay with me. I am sure the guys from Roto-Fab could answer this better than I.

The intake is getting the air from the same location as the OEM one. But, the opening at the bottom is FAR larger than the OEM box. So much so that I dropped a nut and it fell into the front bumper. I reached down and grabbed it through the box. My entire arm fit inside the opening at the bottom with no problem.

The top is open for two primary reasons:

1) We wanted the largest filter possible. The base of the filter is very close to the hood, so by using the hood as our "lid", we maximize the space over the filter. This allows the entire filter to be used with minimal restriction.

2) All of our intakes will have a very large filter and we thought it would be good to show them off!

Zaphod B
04-30-2008, 02:35 PM
Got it, thanks. Is the hood actually sealing to the airbox?

Kevin@Roto-Fab
04-30-2008, 02:50 PM
Got it, thanks. Is the hood actually sealing to the airbox?

Yes it is. We have enough miles on our car that you can actually see witness marks on the hood liner. The line on our hood liner continues without any breaks or voids. If you look at the pics on this thread, you can see we cut the boxes to contour all of the lines in the hoodliner. Actually, it's a little more obvious as pictured here without the seal on.

Cashed
04-30-2008, 03:16 PM
I have put the Holden radiator cover on my G8 to clean up the engine bay. Curious as to if this air intake set will still fit with that cover. Looks like it might not fit.

The set up looks great!

dodson914
04-30-2008, 03:18 PM
I have put the Holden radiator cover on my G8 to clean up the engine bay. Curious as to if this air intake set will still fit with that cover. Looks like it might not fit.

The set up looks great!

I bet you could cut the radiator cover to make it fit. Not sure what this would do to the cover as far as being on there securely though. Otherwise, I don't see any way it could.

I have a NEP CAI sitting in a box if you want it. :D

Zaphod B
04-30-2008, 03:19 PM
Yes it is. We have enough miles on our car that you can actually see witness marks on the hood liner. The line on our hood liner continues without any breaks or voids. If you look at the pics on this thread, you can see we cut the boxes to contour all of the lines in the hoodliner. Actually, it's a little more obvious as pictured here without the seal on.
You've done your homework, then - great job.

Stingpac
04-30-2008, 06:27 PM
Dodson ... Now that you have the new Roto Fab intake ... are you going to have to get your ECM updated by VMS before you see any horsepower gains ? I know you said you couldn't tell the different with the sound since you already have an aftermarket exhaust, but can you feel any extra power ?

dodson914
04-30-2008, 06:29 PM
Dodson ... Now that you have the new Roto Fab intake ... are you going to have to get your ECM updated by VMS before you see any horsepower gains ? I know you said you couldn't tell the different with the sound since you already have an aftermarket exhaust, but can you feel any extra power ?

It's too hard to tell. I went to the dealer the day before and swapped out my ECM for the stock one. So when I installed the new intake I swapped the stock ECM back out for the VMS one. So I got the bump from the VMS ECM and the CAI. :( There is no doubt this thing flows 100% better than the stock intake.

I told VMS originally that I had a CAI and exhaust when I got my ECM from them. I am hoping it's pretty close to what it needs to be right now. I am planning on getting a wideband o2 sensor and checking the A/F ratios and taking some data logs with the dashhawk and sending them to VMS to see what they think.

gbcop
04-30-2008, 08:34 PM
Making me drool. Just gotta make it through one more night! Mine will be here tomorrow! I feel like a kid on the night before christmas! With the exception I gotta wait till 5pm for ups to deliver! :soapbox:

locrzng888
04-30-2008, 09:06 PM
very nice.

Kevin@Roto-Fab
05-01-2008, 07:58 AM
I have put the Holden radiator cover on my G8 to clean up the engine bay. Curious as to if this air intake set will still fit with that cover. Looks like it might not fit.

The set up looks great!

I would probably notch the box. It could be done in a way that looks very clean. The box wouldn't look modified or hacked once the cover was back in place. I have done this for a similar application. We can even do the mod for you and then we would have a pattern to cut the airboxes for that cover. My only concern is the cover may restrict air flow to the top/front area of the filter. Our first tool for this airbox covered that area. It would have allowed for a cover such as yours,but we came to the conclusion that it limited air travel around the filter, so it was back to the drawing board!

Cashed
05-01-2008, 08:26 AM
Did it limit air travel enough to show a significant decrease in power? I thought most of the airflow came from the bottom of the air box? I am VERY interested if you can the box to fit AND still be effective. I dont really feel like cutting the radiator cover that I spent 180 bucks on and waited 3 weeks to receive (yes, live and learn :)-but the cover really looks nice, too!)

Kevin@Roto-Fab
05-01-2008, 10:44 AM
Did it limit air travel enough to show a significant decrease in power? I thought most of the airflow came from the bottom of the air box? I am VERY interested if you can the box to fit AND still be effective. I dont really feel like cutting the radiator cover that I spent 180 bucks on and waited 3 weeks to receive (yes, live and learn :)-but the cover really looks nice, too!)

If one of you will send your cover to us, we could create a custom cut airbox for this application. We will cover the shipping too.:p

Cashed
05-01-2008, 11:21 AM
not interested in shipping mine off...but anyone else????

G8V8
05-01-2008, 11:30 AM
If one of you will send your cover to us, we could create a custom cut airbox for this application. We will cover the shipping too.:p

I'll loan you mine.
LMK.

G8V8
05-02-2008, 07:41 AM
Roto,
I've sent you a couple of PMs and the cover is being shipped to you today.
Ed

Kevin@Roto-Fab
05-02-2008, 05:37 PM
Roto,
I've sent you a couple of PMs and the cover is being shipped to you today.
Ed

Your help is appreciated. We will fit the cover to our intake next week.
Mike

dltv
05-02-2008, 06:02 PM
Did it limit air travel enough to show a significant decrease in power? I thought most of the airflow came from the bottom of the air box? I am VERY interested if you can the box to fit AND still be effective. I dont really feel like cutting the radiator cover that I spent 180 bucks on and waited 3 weeks to receive (yes, live and learn :)-but the cover really looks nice, too!)

I agree with what your saying. The cover does make the engine look less busy. Are visual appealing. For those who want to retain a clean engine look prefer something that looks and preforms.

I just wish those plastic covers were more of a 99.99 deal. and not 199.99

I applaud Roto's passion to help each customers application. Thanks G8V8 for letting him have a go at it.

Speedyone
05-02-2008, 08:34 PM
I just finished installing the rotofab intake with the radiator cover. They actually worked very well together. No cutting of either was required. The cover fit right over the top of the intake box. I only had to trim the seal. I'm going to had a small piece of trim seal on the radiator cover to seal everything up tight. I'll load some pics in a few minutes.

Speedyone
05-02-2008, 09:04 PM
pics...click to enlarge



http://i277.photobucket.com/albums/kk71/speedyone1969/th_P5020011.jpg (http://i277.photobucket.com/albums/kk71/speedyone1969/P5020011.jpg)
http://i277.photobucket.com/albums/kk71/speedyone1969/th_P5020012.jpg (http://i277.photobucket.com/albums/kk71/speedyone1969/P5020012.jpg)

Filterman
05-02-2008, 09:12 PM
Speedyone, Did you get your G8 from Inland Valley?

I bought my IOM GT from them on 3-10...

Speedyone
05-02-2008, 09:22 PM
I sure did. Picked it up about 3 weeks ago.

Mister HP
05-03-2008, 08:35 AM
pics...click to enlarge



http://i277.photobucket.com/albums/kk71/speedyone1969/th_P5020011.jpg (http://i277.photobucket.com/albums/kk71/speedyone1969/P5020011.jpg)
http://i277.photobucket.com/albums/kk71/speedyone1969/th_P5020012.jpg (http://i277.photobucket.com/albums/kk71/speedyone1969/P5020012.jpg)



Pics look very nice, much cleaner with the cover in place


Ed

Kevin@Roto-Fab
05-05-2008, 11:16 AM
I agree with what your saying. The cover does make the engine look less busy. Are visual appealing. For those who want to retain a clean engine look prefer something that looks and preforms.

I just wish those plastic covers were more of a 99.99 deal. and not 199.99

I applaud Roto's passion to help each customers application. Thanks G8V8 for letting him have a go at it.

Your pics look great! Can you post the distance between the air filter and the edge of the cover?

G8V8
05-05-2008, 11:23 AM
They should get my cover tomorrow, tuesday, by UPS.

JARZYS G8
04-11-2009, 09:32 PM
I received my RotoFab intake and radiator cover. They look great, but other then a nicer sound when a nail it off the line, i'm not impressed. No apparent HP gains that can be noticed. I previously had a 06 Hemi Charger with a K&N filter and noticed a huge improvement in sound and power the second I fired it up and took it out to the streets. What are the true HP gains from stock with the RotoFab. I actually feel a delay for the filter to suckin the air before it wants to go.

drglock
04-11-2009, 10:04 PM
I received my RotoFab intake and radiator cover. They look great, but other then a nicer sound when a nail it off the line, i'm not impressed. No apparent HP gains that can be noticed. I previously had a 06 Hemi Charger with a K&N filter and noticed a huge improvement in sound and power the second I fired it up and took it out to the streets. What are the true HP gains from stock with the RotoFab. I actually feel a delay for the filter to suckin the air before it wants to go.

http://www.g8board.com/forums/showthread.php?t=2572

link to results with stock/Rfab solo/Rfab+VMS tune

Basically showing a 23 HP gain and 23 Tq gain at the Wheels from stock to Rfab

Shows about another 20 HP and 20 Tq on top of that when you have the VMS tune. -at the Wheels

JimmyJazz
04-11-2009, 10:06 PM
Stock 303 rwhp. Rotofab intake 313 rwhp. Tune 330rwhp. All done with the hood up. Closed the hood after the final tune and did 320 rwhp.

JARZYS G8
04-11-2009, 10:41 PM
Thanks for the quick response back on this. I'm going to take it a part again in the morning and double check everything. Maybe it's just the hot florida heat we've been having lately. What a great site and i appreciate your input guys.

jgt1
04-11-2009, 11:10 PM
Intalled mine on 4/10. Drove 50 plus miles today in between Grapevine and Keller. The difference is incredible for only having the intake installed. Now I can't wait for a cat back and tune. Just trying to be patient.

Still miss my GTO.

jgt1

JARZYS G8
04-11-2009, 11:23 PM
i actually had a deposit on a 12k mile 06 gto and switched to the white hot g8 gt at the last minute. The one thing about the GTO is that you don't see many around and man it just seemed much faster and sounded great. But hey, it was nice to dust the first hemi charger that wanted to take a stand the first chance I had. Don't get me wrong, I loved the charger when I had it, but it was a freakin tank. The handling and unique looks is what finally sold me on the G8 GT.

drglock
04-12-2009, 10:24 AM
I received my RotoFab intake and radiator cover. They look great, but other then a nicer sound when a nail it off the line, i'm not impressed. No apparent HP gains that can be noticed. I previously had a 06 Hemi Charger with a K&N filter and noticed a huge improvement in sound and power the second I fired it up and took it out to the streets. What are the true HP gains from stock with the RotoFab. I actually feel a delay for the filter to suckin the air before it wants to go.

Double check all of your hose clamps. Make sure they are plenty tight. Make sure all hoses are well connected. I definately felt and heard the difference when I installed my Rfab. But I did have an issue with some of the hoses coming apart because I did not clamp them tight enough. You should also look into the GRRRR8 lower panel mod which allows more air into the intake area from below the car. You will notice an improvement from this as well.

Mr. Bueno
04-12-2009, 11:50 AM
Is it unsafe to install a RotoFab intake and not get a tune? AKA, will mileage go down, and what will happen to the a/f ratios

beach
04-12-2009, 12:36 PM
Is it unsafe to install a RotoFab intake and not get a tune? AKA, will mileage go down, and what will happen to the a/f ratios

Not unsafe or unusual at all. Lots and lots of people install CAI systems on a lot of different vehicles, let alone the G8, everyday without a tune.

The only advised thing, probably, would be to disconnect the battery for a few minutes so it relearns some base parameters right away with the intake.

Otherwise, you're good to go stock+intake--you'll see gains as is, just not to the full extent possible via a tune specific to the intake.

Night Train
04-13-2009, 11:02 AM
Is this the same CAI sold by PFYC??

agkyle
04-15-2009, 04:14 AM
Seems to be a few peeps in here from around D/FW. I'm in Hurst and work in Arlington and I rarely see G8's around. I need to meet up with one of you guys and see your setups.

PS - This is my first post...been lurking for a while now. Bought my '09 in November.

BigRob
04-15-2009, 04:27 AM
Welcome aboard dude! very addicting site!!

jgt1
04-15-2009, 04:18 PM
Seems to be a few peeps in here from around D/FW. I'm in Hurst and work in Arlington and I rarely see G8's around. I need to meet up with one of you guys and see your setups.

PS - This is my first post...been lurking for a while now. Bought my '09 in November.

I work in Grapevine. Live in Keller. Just purchased my G8 GT on 3/28/09 in Grapevine.

So far Roto Fab intake. Radiator cover is schedule to be delivered on 4/17/09 from Roto Fab. Next exhaust and then programming then more Roto Fab products.

JGT1

agkyle
04-15-2009, 04:22 PM
I work in Grapevine. Live in Keller. Just purchased my G8 GT on 5/28/09 in Grapevine.

So far Roto Fab intake. Radiator cover is schedule to be delivered on 4/17/09 from Roto Fab. Next exhaust and then programming then more Roto Fab products.

JGT1

I used to live in NRH and have some family in Southlake, drive through your area a lot. I'd like to see your setup sometime (or anyone in the area for that matter), decide if I wanna start modding this car or just leave the modding to my Z28.


Thanks for the welcome!!

Mr. Bueno
04-25-2009, 10:44 AM
Two questions for anyone.

Did you use the 7/8" Rubber coupler?

Also did anyone have any issues with the lower airbox bolt that attaches to the sheetmetal in the engine bay?

Any close up pictures of the vacum line routings would also be appreciated.

Thanks guys.

Mr. B