didnt do a search but i looked through this section and didnt find it. I was reading on one of the other g8 boards that the dealer can reprogram the G8 for 400HP, anyone else heard of this or know if its true and if so whats the name of it and how you go bout getting it?
http://www.g8forum.com/forums/f9/ecu-chip-mod-real-201/

No, But a few goodies from VMS and it is real easy.

I spoke to that gentleman, its just a dealer reselling our product to him. You can go direct and save $$!

didnt do a search but i looked through this section and didnt find it. I was reading on one of the other g8 boards that the dealer can reprogram the G8 for 400HP, anyone else heard of this or know if its true and if so whats the name of it and how you go bout getting it?
http://www.g8forum.com/forums/f9/ecu-chip-mod-real-201/

The way that works is this... you dealership installs an aftermarket tune and then if anything goes wrong they cover it.

Buy the same tune from somewhere else and install it and they will not...

The way warranty works is that the DEALERSHIP decides if something is going to be covered. If they don't cover someting it is up to you to convince GM corporate that they are wrong.

I spoke to that gentleman, its just a dealer reselling our product to him. You can go direct and save $$!

Or to sumerise... what he said.

Sheesh... speed typists.

I spoke to that gentleman, its just a dealer reselling our product to him. You can go direct and save $$!

Thats true but on the other hand wouldnt you have piece of mind that the warranty will still be honored being that the dealer installed it?

Thats true but on the other hand wouldnt you have piece of mind that the warranty will still be honored being that the dealer installed it?

Honestly at the end of the day it has no effect on the warranty. GM can override them if they feel the need to, if you have a good relationship with your dealer they will warranty anything you need anyhow :)

39hp from a tune, I doubt it.
Tune+intake+tune=39rwhp. (Give or Take)

39hp from a tune, I doubt it.
Tune+intake+tune=39rwhp. (Give or Take)

So, let me get this straight, you tune it twice?

Vector, get the FlashXpress boxed up please.

:wink2:

I like these cars I really do but 39hp from a tune is a stretch.

I like these cars I really do but 39hp from a tune is a stretch.

Why?

The LS2 is the same size and makes that in the GTO. The LS2 in the VXR8 makes 414...

So why is it surprising that you can tune an L76 to the same output with ease...?

LS2 is slightly different, it has a higher compression ratio and a different cam. You can gain 39hp but you'll need more than just a tune.

right... but you can get 25 HP on an LS2 with a tune.

on the L76 you are going from regular to premium and getting a bunch of advance...

not saying you will get 39 but I think it is possible.

Damn near anything is possible but lets be realistic.

lmao id like to see that along with some dyno numbers... I think its just a way for the stealership to steal more money from you... bottom line go with vms or hp tuners + dyno time to see real results. fin

Vector has dynos up on this sight reflecting that gain from that tune. Several of their customers have reported similar gains independantly.

Roto- Fab and tune will get you 40 with 93 octane tune

Roto- Fab and tune will get you 40 with 93 octane tune

And that is at the wheels...

And that is at the wheels...

Yes Sir! Cant run in the 12s unless that stuff really works.

39hp from a tune and intake? I don't really believe thats possible. Furthermore, I live in California where there is only 91.

39hp from a tune and intake? I don't really believe thats possible. Furthermore, I live in California where there is only 91.

Well there is your problem right there...

Seriously though how much LS experience do you have? These motors are renowned for being very freindly to mods, even when GM hasn't neutered them.

So the tune gives you back the HP GM took out of the car plus a few more from being more aggressive than GM's NVH guys would allow.

39hp from a tune and intake? I don't really believe thats possible. Furthermore, I live in California where there is only 91.

Best bang for the buck for you is to do nothing. Then you dont have to question yourself or anybody else and look how much $$$ you will save.

I dunno.... from math: any number divided by 0 is ∞, however 0 divided by any number is 0... so your HP/$ for doing nothing is somewhere between 0 and ∞... not a really big range? *grinz*

I dunno.... from math: any number divided by 0 is ∞, however 0 divided by any number is 0... so your HP/$ for doing nothing is somewhere between 0 and ∞... not a really big range? *grinz*

LMAO! I came up with 0.01 if he doesnt biggie size it. :slap:

I KNOW THAT YOU CAN EASILY 39HP BUT NOT JUST FROM A TUNE. I know that you can add 100rwhp for around 2600 dollars, but it would cancel the warranty which defeats the purpose of buying a new car.

I dunno.... from math: any number divided by 0 is ∞, however 0 divided by any number is 0... so your HP/$ for doing nothing is somewhere between 0 and ∞... not a really big range? *grinz*

Never divide by 0...

http://img.photobucket.com/albums/v320/GeorgeInNePa/Comedy/phpw9jvl0pm.jpg

I KNOW THAT YOU CAN EASILY 39HP BUT NOT JUST FROM A TUNE. I know that you can add 100rwhp for around 2600 dollars, but it would cancel the warranty which defeats the purpose of buying a new car.

I am not going to bother arguing this any further... simple refutation is not a valid form of debate... (see monty python)

well I guess technically the cars HP will slowly increase up to about 5000 miles and then slowly fall back off until it finally dies... so technically we are going to be dealing with weird numbers on two orders.

Never divide by 0...

http://img.photobucket.com/albums/v320/GeorgeInNePa/Comedy/phpw9jvl0pm.jpg

Sweet pic

Never divide by 0...

http://img.photobucket.com/albums/v320/GeorgeInNePa/Comedy/phpw9jvl0pm.jpg

What the hell caused that?

I am not going to bother arguing this any further... simple refutation is not a valid form of debate... (see monty python)

well I guess technically the cars HP will slowly increase up to about 5000 miles and then slowly fall back off until it finally dies... so technically we are going to be dealing with weird numbers on two orders.

http://www.youtube.com/watch?v=k3HaRFBSq9k

I went to that place! All they wanted to do was argue! So I got pissed and they gave me this web site address as a consolation prize. LOL

What the hell caused that?

A really good graphic artist.

A really good graphic artist.

LOL! I sure hope so. I thought it imploded.

LOL! I sure hope so. I thought it imploded.

Don't listen to him, it did implode. Sucked into a naked singularity because someone divided by zero.


:wink2:

Step away from the cooler George! You are on a mission today. LOL

Man, it's Texas hot up here today and I can't stand it!

I need to go into the cooler and crack a few open!

I'm suprised no one has linked to the dyno sheets yet or are you saving that for the final "blow"? :)

I'm suprised no one has linked to the dyno sheets yet or are you saving that for the final "blow"? :)

Ok, fine, here it is.

http://www.vectormotorsports.com/images/products/G8/vmstuneroto.jpg

I'd say that about sums it up

Ok, whats the difference between a custom dyno tune and a handheld tune sent from vms.

Ok, whats the difference between a custom dyno tune and a handheld tune sent from vms.

Unless you are really lucky the tuner screws up the tune on the tranny (cause it is relatively new) and the AFM settings...

Not that I am saying vms is magic... there are probably lots of good tuners out there. Dyno tune is just about always better than from a box.

Well I live in California, so I should just go to a shop around here as apposed to getting a tune sent from vms?

Ok, whats the difference between a custom dyno tune and a handheld tune sent from vms.

VMS tune isn't a hand held tune. It was based off a G8 on their dyno. It is a custom tune.

It's amazing how many great cars are out there today, I mean you could buy an used srt8 chrysler for around 25k, and you can tune one of those bad boys too. Comes stock with big breaks and big wheels, most have navi. Or a used saleen mustang (supercharged) for around 33k. The Camaro is coming out in a couple of months. The 2008 Cadillac cts, and all of these are great cars. I mean it is very hard to make a decision.

I would get one of them cold air kits that makes 25hp. If they got a dyno sheet it must be the truth! Cha Ching!!!!

TGB, VMS got a chance to spend a lot of time with the G8 on a dyno perfecting the tune. Your local tuner is most likely only tuning for wide open throttle. A stock(ish) G8 is a fine example of a setup that is perfect for a mail order tune like VMS is offering as your car and everyone elses car is close enough to the same.

When you start getting into a more radical setup, heads/cam, blower, etc, then I'd recommend sitting down with someone locally. Until then, VMS and the time that they have invested into the tune is really going to be hard to beat.

Ok heres what I would do if I bought a g8, headers, intake and tune, can vms tune my car for 91 octane even though I have headers, or do I need to get a custom tune? Opinions from all are welcome.

I have been talking to them and they are confident that they can tweak their tune for you. Actually I am willing to bet that they have done enough G8s inhouse that they already have a long tube header file already.

Most anything external motor I would think they could nail on a VMS mail order tune. Except nitrous.

7/21 Just came off of a Mustang dyno, the car has , Rotofab CAI, Magnaflow mufflers, GRRR8 mods.317hp@333 tq. rear whl. The car has already run 13.49 @106 1/4 mile. Mustang dyno 1/4 mi. 12.99. I can't wait to get all my VMS stuff.

Failed to post that the a/f was 11.05 at wot, fat as a pig.

I see them GRRRR8 mods work. That thing will be fast when you get the tune. How many miles on it?

http://img.photobucket.com/albums/v320/GeorgeInNePa/Comedy/phpw9jvl0pm.jpg[/quote]
That was here in Houston.I saw it myself.

http://img.photobucket.com/albums/v320/GeorgeInNePa/Comedy/phpw9jvl0pm.jpg
That was here in Houston.I saw it myself.[/QUOTE]

Was that the ladies house that blew up in Missouri City?

4000 mi , I can feel that he car is stronger with the added miles on it,and the Charlie mods . I'm going back to the track ,as soon as my buddy's 8.50 class car is back together .They rent the track for testing , and you can't pass up a freebie

4000 mi , I can feel that he car is stronger with the added miles on it,and the Charlie mods . I'm going back to the track ,as soon as my buddy's 8.50 class car is back together .They rent the track for testing , and you can't pass up a freebie

I am about 1650 now. It is looser, but a ways to go. Come on October!

39hp from a tune and intake? I don't really believe thats possible. Furthermore, I live in California where there is only 91.
Its been reported by MULTIPLE posters on this site that those numbers are legit. And the 1/4 mile times to back it up.

ITBFST is living proof that the right combo will get you there....FAST!

I am about 1650 now. It is looser, but a ways to go. Come on October!

A little over 3500 on mine.

25 miles, each way, to work adds up.

A little over 3500 on mine.

25 miles, each way, to work adds up.

Sure does. 20 miles for me each way. That little 2000 mile trip to La. didn't help. I'm a bit over 4000 now.

The way that works is this... you dealership installs an aftermarket tune and then if anything goes wrong they cover it.

Buy the same tune from somewhere else and install it and they will not...

The way warranty works is that the DEALERSHIP decides if something is going to be covered. If they don't cover someting it is up to you to convince GM corporate that they are wrong.

Not quite. Even if dealer installs a Genuine GM Performance Part tehre is no guarantee that GM will warranty cover and failed part related to the install.

The way warranty really works is dealer submits claim (if they it worthy, otherwise they tell you so and bill you) if claim is approved no problemo, if denied then you are SOL. It is not teh dealer who detremines what is or is not a covered claim, all they do is submit for corporate decision.

That was here in Houston.I saw it myself.

Was that the ladies house that blew up in Missouri City?[/quote]

My parents lived across the street from that lady. PRetty crazy she survived with minor injuries.

I've gotten G8's to 400hp at the crank with just a 93 octane tune.

13.0:1 AFR and a timing bump does it nicely. Had them dynoing 338rwhp, which is roughly 400BHP through the automatic, thats what GTO's translate into

I've gotten G8's to 400hp at the crank with just a 93 octane tune.

13.0:1 AFR and a timing bump does it nicely. Had them dynoing 338rwhp, which is roughly 400BHP through the automatic, thats what GTO's translate into

I read this a minute ago and it said 348hp. Now 338hp. It does say G8s, so I am assuming more then 1 with these results. Just a tune only? Bone stock?

I read this a minute ago and it said 348hp. Now 338hp. It does say G8s, so I am assuming more then 1 with these results. Just a tune only? Bone stock?

i made a typo, and editted it. but yes, ive done two so far here.

i made a typo, and editted it. but yes, ive done two so far here.

Great job. Keep us posted. I am assuming you are using HP tuners.

Great job. Keep us posted. I am assuming you are using HP tuners.

thank you

yep, been using it for years, before that was an efilive guy, and ls1edit.

I've gotten G8's to 400hp at the crank with just a 93 octane tune.

13.0:1 AFR and a timing bump does it nicely. Had them dynoing 338rwhp, which is roughly 400BHP through the automatic, thats what GTO's translate into
No way to measure accurately at the crank without pulling engine from car. AT best you can measure rwhp before (what #'s did you get?) and after, and join the great debate over whether reduction from crank to rw is % or absolute.

:judge: You have a total G8 experience of 2. :judge:

No way to measure accurately at the crank without pulling engine from car. AT best you can measure rwhp before (what #'s did you get?) and after, and join the great debate over whether reduction from crank to rw is % or absolute.

:judge: You have a total G8 experience of 2. :judge:


I've been tuning vehicles for quite a long time, the pcm is also very similar to previous generation gm LSx engines.

The cars dynoed mid 290s before tuning. The G8 is not some modern mystery for GM tuning. If you can tune a vette, gto, camaro, trans am etc, guess what, a G8 is no daunting task.

Powertrain loss is not an absolute, but common sense says, we have a car rated at 362BHP, it dynos mid 290s at the wheels stock. Once retuned it makes mid to high 330s, through a 6spd auto...youre damn close to 400bhp or above

The fact of the matter is, GM neutered the G8's pcm as they did with the GTO, and the new C6. It can be corrected easily, but the car leaves a lot on the table that can be fixed simply.

No way to measure accurately at the crank without pulling engine from car. AT best you can measure rwhp before (what #'s did you get?) and after, and join the great debate over whether reduction from crank to rw is % or absolute.

:judge: You have a total G8 experience of 2. :judge:

I started a whole thread about this and noone responded...


I fall in the absolte camp... % makes no damn sense.

I've been tuning vehicles for quite a long time, the pcm is also very similar to previous generation gm LSx engines.

The cars dynoed mid 290s before tuning. The G8 is not some modern mystery for GM tuning. If you can tune a vette, gto, camaro, trans am etc, guess what, a G8 is no daunting task.

Powertrain loss is not an absolute, but common sense says, we have a car rated at 362BHP, it dynos mid 290s at the wheels stock. Once retuned it makes mid to high 330s, through a 6spd auto...youre damn close to 400bhp or above

The fact of the matter is, GM neutered the G8's pcm as they did with the GTO, and the new C6. It can be corrected easily, but the car leaves a lot on the table that can be fixed simply.

Interesting. I have two questions.

Does it take someone with a PhD to tune a G8 or can anyone do it?
Do the cars you tune ran as smooth as Pure-concours makes the finish on a car?

LMAOOOOOO!!!! Your killin me! I just read all that **** over there and BAM here it is again! You can run but you cant HIDE!

:ohsnap1:

Lilmissgto, do you have any pics of your ride?

Locking thread before it gets out of hand.

For the new G8 owners, LucidGTO is a problem member/scammer from LS1GTO.com, hence the responses you've seen late in this thread.