We were within 1% of our target horsepower goal for last night, and thought everyone would like to see some current numbers from our G8 project car. It's definitely evolving into a world-class super car. :)

The red lines are from our original baseline, when the car was bone stock, with only 500 miles on the odometer. The blue lines are from last night with 3,500 miles and the mods listed below. The graph shows wheel horsepower (WHP). To convert these numbers to crankshaft horsepower, just divide them by 0.85 and you’ll be pretty close. So 544.7 / 0.85 ~ 640.8 crankshaft horsepower. :D

Let me just say that this is without question the most fun car I’ve ever owned. :driving:

Current mods include:

Pedders Track II suspension system
APS twin turbo/intercooler kit
Siemens 60 pound/hour fuel injectors
3” Magnaflow dual exhaust system
Autolite AR103 spark plugs gapped at .035”
INTENSE 160 degree thermostat
Mobil 1 5w30 synthetic oil
Sunoco 94-octane premium fuel
INTENSE dyno tune
Autometer fuel pressure gauge
Autometer oil pressure gauge
AEM boost controller/gauge
INTENSE windshield banner ;)

Actual dyno number progression (all on same Dynojet model 248 using SAE correction factor):

4/13/08 - 291.6 WHP = completely stock
4/15/08 - 312.6 WHP = INTENSE dyno tune with 93-octane fuel
5/15/08 - 473.3 WHP = twin turbo/intercooler kit, colder spark plugs and thermostat (boost = 7 psi)
6/26/08 - 544.7 WHP = larger fuel injectors and exhaust system (boost = 9 psi)

Future plans include turning up the boost a little more. Next will be fuel system modifications. And after that we may consider a cam, ported heads and ported intake...

http://www.intense-racing.com/pics/dynos/Scott_Cook_Dyno_G8_544_640.jpg

If that were mine I would get forged piston in it before bumping the boost much more, especially if you're popping the heads off anyway.

If that were mine I would get forged piston in it before bumping the boost much more, especially if you're popping the heads off anyway.

I wanna know how popping the heads off would help in replacing the pistons lol

very nice.


I'll be listening for the "pop" LOL!

be careful!

I wanna know how popping the heads off would help in replacing the pistons lol


Magic. The caps fall right off. :slap:

Magic. The caps fall right off. :slap:

use a slap hammer to yank from up top...to hell with the rod caps!:wink2:

I wanna know how popping the heads off would help in replacing the pistons lol

Obviously not directly but you're already doing a ****load of work so a little more might be more acceptable than just starting from jump.

Very impressive Scott! Ya just gotta learn not to baby that thing so much when yer driving ;)

That's amazing - very nice set-up!

What was your method of break-in Re Raise ? Btw very nice results. . .

Very nice. Maybe I need a blower or LS9. Time will tell.

What was your method of break-in Re Raise ?
Nothing special, really. I just babied the car for the first eight days and 499 miles. Then we put it on the dyno for our baseline and first tune numbers as soon as the odometer showed 500 miles. :D

Nothing special, really. I just babied the car for the first eight days and 499 miles. Then we put it on the dyno for our baseline and first tune numbers as soon as the odometer showed 500 miles. :D

Do you see the reason in running it hard during the car's first 50 miles or so inorder to allow the rings to set ? Im curious to hear what you think about the method mentioned below.

http://www.mototuneusa.com/break_in_secrets.htm

That's a tremendously controversial topic, and I don't think we'll ever all agree on it. Sort of like timing versus boost or blowers versus turbos, there are just two schools of thought and they're at opposite ends of the spectrum. Here's my personal opinion for what it's worth. :)

On our race engines, we 'break them' in by taking them down the strip a few passes at full power, change the oil, then consider them to be broken in. But these are single purpose engines with an expected life that's relatively short. :driving:

For street cars where the engine is expected to last 100,000 or far more miles, I go with the more conservative approach and baby them for the first 500 miles or so. My thought process is that even if I'm wasting a little time doing this (eight days in my G8's case), there aren't really any other negative side effects. :driving:

I'd like to point out that I've owned more than a dozen Pontiacs, and three of them have gone well beyond the quarter million mile mark without ANY internal engine work. In fact, we still have one car in our family (a '92 SSEi) that is daily driven with 370,000 miles now!

In addition to following 'old-school' break-in procedures, I always do one other thing in terms of engine maintenance that's against the grain. I change the oil every 3,000 miles, even though the engine oil life monitor often shows ~ 70% oil life. Even though it's synthetic oil and designed to last much longer, it still picks up dirt just like conventional motor oil. And dirt is a big enemy in terms of engine wear. Try it once. Change your oil at 3,000 miles and compare it visually to new oil.

Maybe this topic is interesting enough that we should start a separate thread for break-in and oil change interval discussions?

I know im saving for the aps tt kit or gen tt... just not sure which one is better

Very nice numbers....

Looking good Scott!

This car gets faster and faster every week. Makes me want to replace my Bonneville with a G8 :) (can I get a ride yet, boss?)

I know im saving for the aps tt kit or gen tt... just not sure which one is better

Feel free to give us a call in regards to the APS Kit. Very impressive kit for the money. I see an APS Kit in my future for my Z06!

AHHH seems the 3" MAGNAFLOW G8 Cat-back found its new home. Glad to hear everything went well with the install and the power is very impressive. The dynamics of the exhaust system work very well with the increased exhaust flow. I am curious to hear the roar and spooling turbos ...

AHHH seems the 3" MAGNAFLOW G8 Cat-back found its new home. Glad to hear everything went well with the install and the power is very impressive. The dynamics of the exhaust system work very well with the increased exhaust flow. I am curious to hear the roar and spooling turbos ...

If its anything like previous APS cars I heard, you barely hear the turbos.

Any updates on the kit or the cars health?:wink2: Did you guys do anything to the tranny yet?

That's a tremendously controversial topic, and I don't think we'll ever all agree on it. Sort of like timing versus boost or blowers versus turbos, there are just two schools of thought and they're at opposite ends of the spectrum. Here's my personal opinion for what it's worth. :)

On our race engines, we 'break them' in by taking them down the strip a few passes at full power, change the oil, then consider them to be broken in. But these are single purpose engines with an expected life that's relatively short. :driving:

For street cars where the engine is expected to last 100,000 or far more miles, I go with the more conservative approach and baby them for the first 500 miles or so. My thought process is that even if I'm wasting a little time doing this (eight days in my G8's case), there aren't really any other negative side effects. :driving:

I'd like to point out that I've owned more than a dozen Pontiacs, and three of them have gone well beyond the quarter million mile mark without ANY internal engine work. In fact, we still have one car in our family (a '92 SSEi) that is daily driven with 370,000 miles now!

In addition to following 'old-school' break-in procedures, I always do one other thing in terms of engine maintenance that's against the grain. I change the oil every 3,000 miles, even though the engine oil life monitor often shows ~ 70% oil life. Even though it's synthetic oil and designed to last much longer, it still picks up dirt just like conventional motor oil. And dirt is a big enemy in terms of engine wear. Try it once. Change your oil at 3,000 miles and compare it visually to new oil.

Maybe this topic is interesting enough that we should start a separate thread for break-in and oil change interval discussions?
Regarding synthetic oil analysis, longevity, wear, etc. Here's a link to a site that gives a lot of detail that sold me on the claims of synthetic oil. Average "Joe's" like us participated in the site. A low mileage GM car was used in the study. Every oil change, a sample was sent to an independent lab.

http://neptune.spacebears.com/cars/stories/mobil1.html

Take Care,
Tom

Any updates on the kit or the cars health?
The car is very much alive and healthy. I drive it every day. There are now 4,500 miles on the odometer, and we show an average of 20.8 mpg since the turbo kit was installed.

Next on the agenda are fuel system upgrades, then a beefy cam, then another dyno tune, then we're switching to coilovers and we'll take a shot at the Texas Mile. :driving:


Did you guys do anything to the tranny yet?
Not yet. ;)

We are working with Scott to make sure that he keeps the shiny side up when he takes on the next break-your-speedometer-needle run to 190 a 98% certainty and that 200 is highly probable. You have Backstreet Performance and Pedders full support in this INTENSE project.

Here is a link to the thread where we found the limits of the stock fuel system, and engineered a streetable solution.

http://www.g8board.com/forums/showthread.php?t=5184

Here is a link to our latest dyno number of 723 RWHP on 94-octane pump gas (http://www.g8board.com/forums/showthread.php?t=7185)!

Starting today we're running a special promotion on these APS kits for $1,000 off!

http://www.g8board.com/forums/showthread.php?t=8119