Well i finally made it to the track again. The last time i went i was only able to run once because there was so many people, in that run i ran a 16.8. I knew i could do better than that. So this time my best was a 16.3. I know, thats pretty pathetic, i was hopeing i could run a 15.9. I am getting ready to advance my timing, and my stage 2 chip should be here any day now, I will run again after i get that done, and see how much my time improves.

 

a stage 2 chip might be too aggressive for your setup, im running a stage 1 chip and it seems to be perfect. And just to let you know, tbichips.com recommends that you set your timing back to 0* when you use the stage 2 chip. I think you would see better times with a stage 1 or the stock chip and 6* of advanced timing.

 

I tried a stage 1 chip, but i didnt notice any diference off it. It ran the same as it did with my stock chip. So i sent the chip back, and i am going to try a stage 2. Thanks for the info on the timing, i guess i better leave it alone.

 

screw the chip.You dont need a chip until you have done major mods or an engine swap . Get headers and a high flow cat ,that makes a real difference youll most likely be able to see a 15.9 if you do that. A chip probably wont even give you a tenth .Good luck

 

Ive already got a 3 inch exhaust system, With no cats. thats funny because ive heard several people on this board that a chip sould be one of the first mods. Only thing i dont have is headers.

My best 60' was a 2.35. I manually shifted, i ran my best times by shifting at about 6500 rpm's. My best trap speed was 86.86

Anyone have any advice as to how i might could run better times?
Any will help.
Thanks.

 

I think yer shifting way high. I have a 91 RS 210,000km LO3 with 3" catback and cat delete and I run high 15's all day in full trim and a full tank of gas(2* adv timing). Try shifting around 4700 instead. You've gotta be way past peak HP shifting that high. I wouldn't bother with a chip. Spend yer money on headers or a taller posi rear end.

 

Ok, I will try that next time i go to the track. I am going to try to go back in a couple weeks.

 

1. Those people don't know what they're talking about. What does a chip do for you? Fuel and timing, both of which you can adjust yourself, for free, and achieve the same results at the track.

2. "Only thing i dont have is headers." <- And Y pipe. Those two items are your worst problem right now. Please get headers and Y and for get about the chip for now.

3. I agree that you're shifting WAY too high. Or your tack is off by about 2000 RPM. That engine is all done by 4500.

 

Yeah, thats one thing i forgot about was a Y-Pipe. I was told that the biggest i could go was either 2 1/2 or 2 3/4. I dont remember which but they said there wasnt enough clearance for 3 inches.

I agree i am probably shifting too high, but i still have power after 4500, i have heard alot of people say that power runs out about 4500 but i still seem to pull hard up to about 5700, but i am going to try that next time i go to the track.

Thanks for all the help, and another thing, is a 2.35 good for a launch? I am going to go back to the track, when i do i will post my new times.

 

It may "seem" like it is still pulling but never go by SOTP. Make a pass and shift at 4000 every gear. Then try again and shift at 45, then again at 5, and so on, until your times peakand start to go back down.Take the peak point, and try in 100 R increments above and below that. Once you have found the shift point that yeilds that fastest times, then try raising the 1-2 ONLY in 100 RPM increments since the 700R4 has such a huge 1-2 ratio change. Change NOTHING else, in the process. Try to keep your driving dead consistent, even if it isn't the fastest method, it needs to be consistent.

As for your 60' time, I don't know if LO3's are particularly bad off the line, and I don't know what gear you have, but I think anyting OVER 2.15 is a BAD 60' time. I used to cut low 2.1x's with my 305, 3.23 gear, speed.

 

If wheel spin is a problem, here is a trick I used:

https://www.thirdgen.org/techbb2/sho...threadid=59201

 

Start burning your own and yes you can get tenth or three just from tuning of the chip.

Kat

 

Ok, i found out that the peak horsepower on my car is at 4000 rpm's. Does that mean when i go to the track that i should shift at 4000? Another thing, When i manually shift out of first, it still wont shift until about 5500-6000, when im getting on it, and at about 4500-5000 out of second.

 

If it's shifting that late then someone must have messed with your tranny before you got the car is my guess. The best shift point for a properly setup drag car is the point at which you make peak hp, while shifting into your peak torque point for the next gear.

 

To answer your question about shift point, you want to shift the motor in such a fashion as to keep the engine in it's "power band" as much as possible. The "power band" is the RPM range from the torque peak, to the HP Peak. Ideally, like RegaPlanet said, you want to shift AT the hp peak. However, if your combo is such that doing this results in the motor being BELOW the torque paek just after a shift, then it is often better to run slightly higher than the hp peak before shifting. With out a dyno, how much to do this is trial and error at the track. The only time I think this would apply here, would be the 1-2 shift, with a 700R4 as it's a huge ratio change, compared to the other gears, and the 1-2 in a manual. That means during the 1-2 shift, your engine will loose a ton of RPM, possibly ending up below the torque peak.

Verify that your tach is at least somewhat accurate, then start shifting at 4000, every gear. After you get a solid number, try raising the 1-2 shift in 100 RPM increments.

As for the thing shifting at too high an RPM, try adjusting the TV cable.

 

wow tom, i never noticed your sig before. crossfire injected, that is awesome/rare!

 

lol i like how people throw around the terms "Stage 1" and "Stage 2" as if they referred to something that actually existed in space-time rather than made up.

 

Get a zz4. yup. :lala: