First STOCK GXP in the 12's

**javier1551** · 05-14-2009, 02:22 AM

1GXP4ME by any chance what was your launch rpm's at and did you sport manual shift the car or did you just put it in drive and let her rip.

**1GXP4ME** · 05-14-2009, 09:50 AM

I launched @ about 1500 just rolling into throttle, as far as shifting it was just left in sport mode

**bracketracer** · 08-17-2009, 02:28 PM

This is going to bring an old thread back to life, but I think it will be helpful. I have been curious what tires your GXP has 1GXP4ME, are they Potenzas or RS-As? I also wonder if you know what the Density Altitude was when you made your record passes? You made some awesome runs, congrats! Are you waiting for cool fall air to see if you can improve on them?

**edmanet** · 08-17-2009, 02:34 PM

Originally Posted by bracketracer

This is going to bring an old thread back to life, but I think it will be helpful. I have been curious what tires your GXP has 1GXP4ME, are they Potenzas or RS-As? I also wonder if you know what the Density Altitude was when you made your record passes? You made some awesome runs, congrats! Are you waiting for cool fall air to see if you can improve on them?

I bet he is. I know I am. I owe Jay a run down the 1/4 in my car.

**OLD_GOAT** · 08-17-2009, 04:36 PM

Originally Posted by 1GXP4ME

I launched @ about 1500 just rolling into throttle, as far as shifting it was just left in sport mode

I have done the exact same thing, but have only launched at 750-1000, and at about 100' from the end of the run, the car goes into 4th and I lose time.

http://forum.grrrr8.net/showpost.php...96&postcount=1

Did you do the 'hold in 3rd' trick on leave it purely in 4th? Even when I left mine in 3rd, I hit the rev. limiter and lost time and mph.

Your car is bone stock with the stock tune?

**1GXP4ME** · 08-19-2009, 03:09 PM

Yes car is completly stock w/ Potenzas, The DA was between 700-800 ft, I am waiting for another cool day to shoot for some 12.60's w/ some negative DA. OLD_GOAT you cant hold 3rd in the GXP due to the 3.27 gear, unless you put on a taller tire.

**bracketracer** · 08-19-2009, 03:16 PM

Originally Posted by 1GXP4ME

Yes car is completly stock w/ Potenzas, The DA was between 700-800 ft, I am waiting for another cool day to shoot for some 12.60's w/ some negative DA. OLD_GOAT you cant hold 3rd in the GXP due to the 3.27 gear, unless you put on a taller tire.

Thanks for the update! You have definitely set the bar very high for the rest of us to shoot for. I have been very curious what tires you were running and in what DA. That is really good air. I won't see that up here in WI until at least September or October. I plan to keep my GXP out as long as I can and try to get one of those "great air with a tail wind days" to hit the track in fall. Since I am running RS-As, and a manual transmission, I'm doubtful that I will surpass your numbers, but I'm sure as hell gonna try. Thanks for giving the rest of us something to strive for, and great run!

**edmanet** · 08-19-2009, 05:10 PM

Originally Posted by 1GXP4ME

Yes car is completly stock w/ Potenzas, The DA was between 700-800 ft, I am waiting for another cool day to shoot for some 12.60's w/ some negative DA. OLD_GOAT you cant hold 3rd in the GXP due to the 3.27 gear, unless you put on a taller tire.

Jay I cammed, geared, and re-stalled......looking for that negative DA also.
Maybe some 11.50s........

**1GXP4ME** · 08-20-2009, 03:22 AM

Cool you changed cams? Did you tighten the converter?

**Devilish34** · 08-20-2009, 04:46 AM

Originally Posted by 1GXP4ME

Cool you changed cams? Did you tighten the converter?

???? I thought he was there for stall and 3.27 only hmm but 2600 or 2800 I forget what he said but it's a single disc this go around

Thread: First STOCK GXP in the 12's

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