So here's the deal. I went to the track and found myself both satisfied and dissappointed at the same time. I had an Injen Cold Air and DC RH put on and went to go see what the results are. Ran a 14.95@96mph and found myself wondering what I am doing wrong. I seen a couple threads of people running 14.9 stock, but I can't figure out what's the deal. My stock time was a lousy 15.5@91. Only thing I could think of was the god awful wheel hop that was occuring at the track. Tried launching at various RPMs from 2.5 - 5.5k, but still the same results with +/- .05 variance. I was powershifting and shifting anywhere from the instant the red light comes on up to 8.5k rpm. Still no change. So what's the deal. Any expert advice? Is it the track or do I just need a stiffer suspension with motor mounts??!?? I know the car's better than that...please help!

 

Post up a slip so we can see actual numbers

 

track prep as well as temperatures make a difference. It may not be your fault especially if you said you were spinning of the line.

 

^^^^Exactly what I was gonna say. I see that you are from TX, I don't know how cold it gets down there, but I would guess that it is in the 50s? I was able to run a very good time stock, but the track was prepped fairly well, and the temp was in the low 40s. Just practice my friend. That is the only thing that will get you better.

 

are u shifting at 8500rpm with the hondata reflash? or on the stock ecu? try launching at 3899 rpm and shifting at 7850 give it a shot. if u launch too high with shitty tires u wil hop and spin way too long and lose time. if u lanch right, and have the right upgrades u can lower ur time significantly. im kinda drunk, so take everything i say with a grain of salt. i got a 15 flat with intake and exhaust with a horrible launch and shitty track conditions.

 

lol 3899 some real specific numbers there.

ITs been around 65-70 here in the days this week, a warm week for us. If he ran the car before 6pm thats proly what the temps were. However it has been really humid, that could have slight effects on it. San Antonio is also really low in elevation.. dont know if that is good or not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95turbodteg &raquo;</TD></TR><TR><TD CLASS="quote">are u shifting at 8500rpm with the hondata reflash? or on the stock ecu? try launching at 3899 rpm and shifting at 7850 give it a shot. if u launch too high with shitty tires u wil hop and spin way too long and lose time. if u lanch right, and have the right upgrades u can lower ur time significantly. im kinda drunk, so take everything i say with a grain of salt. i got a 15 flat with intake and exhaust with a horrible launch and shitty track conditions.</TD></TR></TABLE>

I have the stock ECU and stock exhaust. I think the temperature was low 60s but it was pretty humid. If I launch anything higher than 3 grand I get bad wheel hop. But If I launch below 3 grand it seems like the car kinda bogs a little bit. So I think wheel hop and the factory crap tires are the issue. It's bad. It sounds like im going through a series of really bad pot holes. Almost makes me wanna cry. . I'll try the 7850 rpm shift point and see what that does, but I think ultimately Im in the mood for some better tires. Maybe BF Goodrich KDWs. Will the motormounts and stiffer shocks help???

Sorry about not having the slip posted.....I kept it, just tryin to figure out a way to get it on the computer since we don't have all that fancy digital stuff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XXtremeRicanXX &raquo;</TD></TR><TR><TD CLASS="quote">I have the stock ECU and stock exhaust. I think the temperature was low 60s but it was pretty humid. If I launch anything higher than 3 grand I get bad wheel hop. But If I launch below 3 grand it seems like the car kinda bogs a little bit. So I think wheel hop and the factory crap tires are the issue. It's bad. It sounds like im going through a series of really bad pot holes. Almost makes me wanna cry. . I'll try the 7850 rpm shift point and see what that does, but I think ultimately Im in the mood for some better tires. Maybe BF Goodrich KDWs. Will the motormounts and stiffer shocks help???

Sorry about not having the slip posted.....I kept it, just tryin to figure out a way to get it on the computer since we don't have all that fancy digital stuff. </TD></TR></TABLE>

Just type the timeslip numbers in.

Also when you launch are you slip the clutch or just dropping it?? You have to slip it to launch good.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cnyej1 &raquo;</TD></TR><TR><TD CLASS="quote">

Just type the timeslip numbers in.

Also when you launch are you slip the clutch or just dropping it?? You have to slip it to launch good.</TD></TR></TABLE>


I think i'm dropping the clutch, but that's where you lost me. What's the difference between "slipping" and "dropping"?? Forgive my ignorance.

Here's the slip rundown:................

Reaction: 1.0048 (does not factor into time)

60 ft: 2.3666 (weaksauce)

1/8mi.: 9.7654

1/8mph: 75.10

**1/4mi. 14.9566

**1/4mph: 96.38

 

When you have the engine reving, dont just let the clutch out by just lifting your foot off. You have to "slip" it. Slip meaning as letting the clutch out kinda slow, not really slow, but slower. Do this while feathering the gas so you dont peel the tires. Its going to sound like your doing something wrong.....but your not.

I hope that makes sence.

 

Makes alot of sense. I'll give that a try to on Wednesday. Hopefully it helps. I know most of my problem is in the launch somewhere. Thanx

 

Seat time is really the best way to decrease your times... Just like with any other sport, practice makes perfect. You're on the right track being that you varied your launch RPM's, shift points, etc but its going to take more than one trip to better yourself.

One thing to try is lowering your front tire pressures... not saying to let all of the air out but drop a couple psi out of them every other run and see if you can get some better traction that way.

GL

 

i was kidding about the 3899 launch. ease out on the clutch when taking off, and after that dont take ur foot off the gas pedal. just slam the clutch down and shift very quickly while holding down the gas. that isnt the best for the car, but if u are at the track it will help keep u in constant vtec. also, suspension will help. stiffer suspension will keep u on the ground more. and that time isnt that bad for just intake and header. definitely upgrade the tires first. easiest way to have a horrible launch is with crappy tires. just keep on working on ur launch and find out what is best for u. good luck and keep us posted

 

You gotta take the PSI down to 10. No more hop.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typeReg &raquo;</TD></TR><TR><TD CLASS="quote">You gotta take the PSI down to 10. No more hop.</TD></TR></TABLE>

10 psi.!?! Wow that seems kinda low. The last thing I want is to have a blowout and to have to go pay for an overpriced dealer tire. But i'll play with the psi and rpm launches some more as well as slipping the clutch and i'll get back to yall.

 

weird times
i pulled a 15.0 with stock michelins with 800 miles on the odo.

what tires are u running on?

 

Actually to be honest with you, your timeslips are actually pretty good. You said you ran a 15.5 stock, and now your at 14.9. You mentioned wheel hop, which is a problem I had too running at the track. My stock SI was running 15.5 at 92mph. I tried launching and power shifting too, but the time never got much much better. But I did notice something..I was always dumping the clutch. I got wheel hop no matter if I dumped at 2500rpm or 5000 rpm. I know there are SI's running better times, and I've heard of different opinions of slipping the clutch a bit so the engagement isn't as harsh at launch. Dropping your psi will have no benifit because the compond on our Michelins are too hard. (assuming u have the all seasons too) I'm not trying to say your a bad driver or anything, as I'm still learning also. But assuming that your driving style hasn't changed, comparing your stock runs and you 2nd runs, at least the mods didn't have a negative effect. I'm gonna try slipping the clutch a little bit nex time I'm at the track to see how that goes..hey TYPE X..how did you launch when you pulled the 15.0? and did you get any wheel hop on that run? What do you guys think? .....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrisEK &raquo;</TD></TR><TR><TD CLASS="quote">hey TYPE X..how did you launch when you pulled the 15.0? and did you get any wheel hop on that run? </TD></TR></TABLE>

Zero hop & 2-2500k

 

whattt 2-2500k? woww....i get bad bogging at anything lower than 3k. but im still trying to figure out how to my launch...i found out 4k and slipping is very good...no hop and barely any spin....launches hard out of the hole. but im still learning as well.

 

Im with X on this one I take her out of the hole at about 2.5 slip off the clutch and when I get some good bite I put my foot on the floor, I have also found that giving second gear a split second after disengagment gives me a much stronger pull at engament and when I say split second I do mean like a split second. Hope that helps a little even if im being a little repative.

 

wierd, all that shmack talk like the Si is soo powerfull! I read threads not too long ago about FG1 lx and dx running around 15.s with exhaust and cai. no wonder why the DC2 pwns Si

 

an fg1 isnt pulling a 15 flat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R18_believer &raquo;</TD></TR><TR><TD CLASS="quote">wierd, all that shmack talk like the Si is soo powerfull! I read threads not too long ago about FG1 lx and dx running around 15.s with exhaust and cai. no wonder why the DC2 pwns Si</TD></TR></TABLE>


Wow. Quite untrue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R18_believer &raquo;</TD></TR><TR><TD CLASS="quote">wierd, all that shmack talk like the Si is soo powerfull! I read threads not too long ago about FG1 lx and dx running around 15.s with exhaust and cai. no wonder why the DC2 pwns Si</TD></TR></TABLE>

15s from a FG1. HAH. Maybe with a 40mph tail wind. DC2 doesn't own the FG2. Stock DC2 runs a 14.8 in the 1/4mi. i believe. Stock '06si is 15.0. That's not ownage.

 

first of all i never said 15 flat, i said "15.s" i know it was a 15 i dont know the decimals after it, And i am not lying

WHERE IS SEANJOHN back me up, u know what im talking about, i believe it was project prelude who posted up his DX results. i believe the 1/2 clocked it in 2.2 or something.. i dont alot about time in tracks but someone said it was close to the Si.. as soon as i find the thread ill let u read.