Thread: Ran a 12.3 @110 (Do i go smaller pulley?)

Originally Posted by GTPpower

I'd shift at 5900 with that dyno.

I'm not opposed to it but I would think it would be fine as is. In the in car vids it seems to still pull but dyno say no more power. This is how it is it set for rpm. I have not paid attention to boost at the higher rpm. Not that it should matter.

While I am here I will post up my timing tables

FWIW I'm running the junk in my sig ( nearly the same mods) and I'm at 10 lbs of boost, 11.9-12.0 AF and 20 degrees of timing.

btw, the octane booster isn't doing anything. Might be better to just put some 105 unleaded if you can get it locally to kill any KR.

Did you data log when you ran? If so, post a screen shot of the WOT section of the run.

theres no way to switch to e85 and ramp up the timing to 20-21*? if e85 isn't an option, like others mention run a meth injection to cool the intake charge or just run straight race gas instead of the mix of the octane booster+93oct.

Originally Posted by buck531

Did you data log when you ran? If so, post a screen shot of the WOT section of the run.

I did not data log. I was watching my aeroforce and wideband every run. I don't have carpet etc and the last time I had my laptop on my seat they frowned at that.
What are you shifting at for that trap? I know its a fiero so you have a lot less weight. My Kr went away when I had 2 bottles worth in the tank. Just 1 it tamed it down.
I wasn't 1 for it but some tuners are using it and showing what it does with no changes on a dyno.

Originally Posted by fst

theres no way to switch to e85 and ramp up the timing to 20-21*? if e85 isn't an option, like others mention run a meth injection to cool the intake charge or just run straight race gas instead of the mix of the octane booster+93oct.

The closest E85 is 45min I think away so that's out. Meth maybe but would need a lagit retune and the season is almost over and the car shell might be too. I always put race gas in the car when I get to track except the past few months as I have the boostane as it is $165 for 6 32oz cans. I can get race gas and it is 104 I think but that is 30min away.

Umm. I think I'm shifting at 6200 in 1st and in 2nd if I remember right? Car weighs 3100 with me in it. 2820 on an empty tank without me in it.


is that stuff? Acetone? lol. I bet it beats the crap out of your o2 sensor.

Originally Posted by SgtMarshal

it's octane booster that actually works, torco makes some too, you could run it and pick up a tenth I bet shawn.

Nope. gonna do it on pump 93.

As for shift rpms I had a scan that was a few months old and per the scan 1st-2nd is commanded at 6k @ 52mph and for 2nd-3rd the rpm is 6125 @ 99. Now mind you it takes split seconds after to actually complete the shift so its looking like 6200 on the tach which can be off. Also by watching other youtube vids I see the majority of people shifting at the same if not more. So i'm curious.

the commanded and actual shift RPMs will hardly ever match. If I recall the rule of thumb was +250RPMs actual over commanded is acceptable. this was back on the old CGP forum and I believe trannyman95 had noted it as well. my current Camaro I have commanded 6000 shift point but it actually shifts at like 6175

both my old trannys had a 300 ish rpm slop over. so 6000 would shift at closer to 6300. 5800 was more like 6000.

this new tranny is set to 5800 and it shifts at like 5821. sh its tight.

Went last night to try and beat my last time of a 12.37 and kind of did and that was with 16* of timing and 11.8 afr. This time I had 17* but the afr went to 12-12.2 and I was getting worried but the car took it and netted me the 12.336. I then added another * to make it 18 and some fuel to get me to a 11.7 but netted me the 12.44. Track was getting bad and was 45* out. All runs no KR and there were other runs that just sucked with no traction but this time around I shed 63lbs of additional weight and got the same time basically.

2002 Regal GS @ New England Dragway Running Low 12's - YouTube

cold air let you run more timing for sure. cold track sucks for hooking up, ive been there.

If you're able to lean it out like that and advance timing without knock, you should be able to get more out of it.

Just watched the video. Warm those tires up more. You barely left the ebrake on. That burnout was maybe acceptable after a few passes on a 80° day. You need more heat when it's cold. Break the tires loose and take it up to shift rpm, let off some so it shifts, then push the pedal to the floor.

See what I'm doing here on the burnout? You're making quite a bit more power than I did, so you should have no problem getting a good 2nd gear burnout.
Mo-Kan 1/4 Mile Dragway GTP runs 11.8 - YouTube

A little update. Well one being it is hard for me to actually know if both tires are spinning. I think that's where I run the worst times is that it will fry the tires right off at times and others it will hook right up. But I will spin them up more. Next I was wondering why my afrs were hitting 12.2s . Well I was driving the other night and my lights went dim and my afrs went lean. So i watched voltage and at 5600rpm to 6k it would go from 14.3 to 11.9 then come back again. So I replaced my alternator under warranty and installed a 1/2 shorter drive belt and all is good this morning.

want to buy my zzp voltage stage 2? lol