With these mods, what will my Pontiac run in a 1/4

**Pontiac Grand Prix GT** · 06-16-2013

2007 Pontiac Grand Prix GT.
*MODS*
-Throttle Body Spacer
-3.6"supercharger pulley
-Headers
-180*
-NGKIX6 Plugs
-MSD Coils and wires
-CAI

**Fivefingerdeathpunch** · 06-16-2013

With driver mod, maybe high 13's??

But I would not use a TB spacers or MSD coils, they are worthless mods. MSD coils are known to fail.

**DanPrixGTP** · 06-16-2013

Since you have a Throttle Body Spacer, I'll say 11.01

**Pontiac Grand Prix GT** · 06-16-2013

What coils should I get?

**DanPrixGTP** · 06-16-2013

Originally Posted by Pontiac Grand Prix GT

What coils should I get?

Stock.

**Pontiac Grand Prix GT** · 06-16-2013

Good thing I Kept the stock just in case.what size pulley could I drop with the mods I got.

**blackspike2710** · 06-16-2013

Best question is how you are going to tune this thing?

**DanPrixGTP** · 06-16-2013

Originally Posted by Pontiac Grand Prix GT

Good thing I Kept the stock just in case.what size pulley could I drop with the mods I got.

Do not drop further than a 3.6

Do you have some kind of scan gauge such as an Aeroforce? If not, you need this. You need to monitor KR.

Originally Posted by blackspike2710

Best question is how you are going to tune this thing?

This.

In-car tunes are the best.

**Pontiac Grand Prix GT** · 06-16-2013

My friends owns a tuner shop.

**Fivefingerdeathpunch** · 06-16-2013

Incase you didnt know, your 2007 car is not tune-able. You will need a 04-05 pcm to make it work, and the gas gauge will read backwards. Do some reading on that.

**Pontiac Grand Prix GT** · 06-16-2013

I need to get an AuroForce. With the 3.6 how much KR do I have in any.

**DanPrixGTP** · 06-16-2013

Originally Posted by Pontiac Grand Prix GT

I need to get an AuroForce. With the 3.6 how much KR do I have in any.

Aeroforce*

You have KR, I am positive.

Hopefully no more than 2-3*

**Pontiac Grand Prix GT** · 06-16-2013

Idk much about KR how bad is that

**DanPrixGTP** · 06-16-2013

Google.

Use it.

You need to research more, much more.

**camopaint0707** · 06-16-2013

http://www.grandprixforums.net/safel...0-a-67580.html
Ps the only "mods" you've done that MIGHT yield any type of pick up in a 1/4 mile is the pulley drop and headers. Yet without a tune the mods are useless. So whatever a stock 07 GP GT runs, that is what you'll run.

**1quick** · 06-16-2013

id throw a little race gas in it if you do go to the track, on a decent tire it would definatly go high 13's, my 06 had a 3" catless down pipe k&n drop in 3.4 and race gas and went 14.2 but had no traction in first, a set of dr's and it would have been a solid 13.8-13.9 car

**Pontiac Grand Prix GT** · 06-16-2013

Thanks everyone. I'll deff. run race gas.

**Oxfire** · 06-16-2013

Race gas won't help for **** if you're knocking. Get a proper tune before you even think of running the car hard.

**JDrach** · 06-16-2013

Originally Posted by Oxfire

Race gas won't help for **** if you're knocking. Get a proper tune before you even think of running the car hard.

Yesterday I was scanning and had anywhere from .5*-2.7* KR on my 3.4. Same results when I later switched to my 3.5. Put some 100 Oct in, no KR...

**1quick** · 06-16-2013

Originally Posted by Oxfire

Race gas won't help for **** if you're knocking. Get a proper tune before you even think of running the car hard.

uhhh thats sort of the point of race gas, its much harder to burn so you raise the point of detonation, you can run a pretty small pulley on a stock car with some c16