Yesturday, I went up to my friend work place, cause he was going to raced this 2004 SI, with a Greedy turbo kit, he friend has a 90 Integra LS naturally aspirated, and i have a 04 TL AT. The SI dynoed at 215 at the wheel, and correct me if i'm wrong but the TL only dynoed at 202 or something like that at the wheel, when we all downshifted, The SI was pulling when the turbo spulled up, but even when the turbo was fully spulled, my car was still pulling on the SI, and considering the hp to weight ratio, you think the SI would do a lot better, but suprisingly the TL won on the downshift, but when we raced of the light, I of course lost, cause I have a auto, and I cant race launch. I mean i'm trying to get a 37 hundred pound car off the line, while the other guy launched around 4k, but even though he beat me off the line, I was catching up at the end, but we had to slow down cause there was traffic. And more suprisingly to me, was that my friend was hanging with us the whole time with the LS.

 

the current Si is a dog. period. As with the Sentra SE-R, the prior gen Civic Si was less sophisticated but MUCH better in terms of performance tuning. $.02

 

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Gearing and rolling starts do not mean racing (its all gear if you do). Go from a line.

 

VQ35DE, you are so right, the newer SI isn't all that it's suppose to be, like you've said the 99-00 SI is a whole lot better in tunning performance. My friend with the LS, his wife has a 00 SI, she has some performance mods to it, and I honestly think that her SI, will beat the Turbo 04 SI.

 

Tell me what techniques you used in your racing. Where did you put the shift lever?

What did you do with the A/C. On or off?

The VSA on or off?

Did you brake rev?

Did you shift manually or let it go automatic?

At what speed did you feel your car had the most to offer -the best advantage?

What point was the weakest?

XP

 

I raced without the AC
The VSA was Off
I didn't park rev
I used the sport shift
The car does really well when vtec kick in in 2nd gear, and of course the weakest point was getting off the line. Like I've said, i'm getting a 37 hundred pound car off the line, and the SI is launching at about 4k, can't really compair.

 

I'm not sure what "park rev" means. I was referring to brake reving where you hold your left foot on the brake and press on the gas with your right to build up some starting torque and rpms. Then you launch by letting up on the brake and mashing the throttle pedal.

You will do better by starting in "L" because that will hold first gear to red line or until you bump it up and over to "M" where it will stary in second until you nudge the shift lever up (+) for third. By that time, you are approaching 100 MPH and the race is essentially over. This technique may cause a lot of wheelspin unless you have good traction.

Weight is a big handicap. If you know ahead of time that you are going to race, you would do well to just have a few gallons in the tank. Fifteen gallons of gas weighs almost 100 pounds (@6 lbs. per gallon). A light-weight driver can weigh 100 less than a heavy one. Together that is 200 pounds potential. It takes about 15-20 HP to haul 200 pounds and get the same times. So... you can either add horsepower or subtract weight. Subtracting weight is easier and cheaper. You can save another 60 pounds by taking out the spare, jack, etc. That's the same as picking up another 5 HP or so.

Increasing the tire pressure will lower the size of the contact patch which, in turn will lower rolling resistance. Putting 45-50 pounds in the tires temporarily will make for better launches but worse traction. You will also be able to drive over a dime and tell if it's heads or tails.

Folding in your side mirrors will lower wind resistance as will keeping moon roof and windows closed. This alone could lower your quarter mile time and raise speed ( a small amount). We have the advantage over most cars with a coefficient of drag (CD) of .29 which is the same as a Corvette. A slight head wind and a down grade would help a TL more so than most other cars. We would be LESS affected by the wind. The downgrade would help us more with the tires inflated higher because of less rolling resistance and greater weight.

Just a few tips from someone who's been there and done that. :o

XP

 

o4 tl only dynoed at 202? ur kidding right, 270 to 202, no way. You can't lose that much power from the crank to the wheels.

 

i think ur thinking of the 2nd gen TL (non Type S) dynoing at 200

 

I just have one question, "Park Rev"? Is this something people do, and if they do, why?

 

Park Rev, to my understanding is just reving it while the Auto Trans is in PARK. Why would someone do this while/before racing ... I don't know.

I think the TL Auto Ttrannies are not designed for abrupt take offs. at least I tried the TSXs capability and I could tell that something will break. :grenade:

 

It does dyno at 202 at the wheel, to be exact it's 202.3 whp, at Injen website they post the dyno, here's the link
http://www.injen.com/webpages/testin...%2004%20TL.GIF