I'm runnin the 1/4 mile for the first time this Friday and I have 2 Questions:

#1: What should I set my tire pressure to?
#2: Should I take off my muffler (stock GSR)? I have a Greddy SP Exhaust w/the stock GSR axleback.

It's gonna rattle like crazy and be very very loud if I remove the muffler and I don't think I'll get too much performace diff.. Heck, if anything, I'll get more from just having that much less weight in my car, but it'll be something.

I'm shootin for a 15.1-15.4 outta my DB8. If I can hit that, I'd be thrilled. I'll also be checking how accurate my G-Tech is. I'll update after this weekend.

 

For tire pressure, it's always easier to take away then put back in. So a good idea is to start around 20 - 22 (assuming your running street tires) and keep taking a psi or 2 out until you find something good that works for you.

 

I ran 15 psi at the track and cut a 2.1 60'.

And don't worry about the muffler, keep it on. My friend's RSX ran with and w/o the muffler with no difference.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LS-N &raquo;</TD></TR><TR><TD CLASS="quote">I ran 15 psi at the track and cut a 2.1 60'.
And don't worry about the muffler, keep it on. My friend's RSX ran with and w/o the muffler with no difference.</TD></TR></TABLE>

Very nice and thanks.. I was leaning more towards not removing it.

but 15 psi huh?

Any other suggestions? I'm pulling everythign out of the car that shoudlnt be there.. and If I didnt have passengers, I'd gut the interior. I'd LOVE to hit a 14.x.

 

I run low thirties, cold, at the track. But it sounds like you're talking about the dragstrip.

 

Thus why in the original post I said 1/4 mile

 

just keep the muffler on, you might need that back pressure. i usually lower my tire pressure to 19psi

 

wow... drag racing huh???? i never knew people ran their tires so low for drag... mine are at 45 psi front and 40 psi back for touge.... less sidewall flex.

 

When I'm on drag radials, I was running 15-20 psi......but on street tires, I'd run 20-25. Just make sure you heat them up real good before you stage at the tree.

As for the muffler situation, leave it on. It really doesnt make a difference at all....

good luck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by willywong86 &raquo;</TD></TR><TR><TD CLASS="quote">wow... drag racing huh???? i never knew people ran their tires so low for drag...</TD></TR></TABLE>

Yes, to increase the size of the contact patch that the tires put down on the pavement.

It's not used long enough to worry about the heat buildup that would occur if you used such low pressures on the street or on a road course...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iH8RICERZ &raquo;</TD></TR><TR><TD CLASS="quote">When I'm on drag radials, I was running 15-20 psi......but on street tires, I'd run 20-25. Just make sure you heat them up real good before you stage at the tree.
good luck!</TD></TR></TABLE>

I have street tires though.. I"ve always been told that heating up street tires makes them more slippery, sicne it's a different compound than drag tires..

 

You don't need to heat up street tires.

The weather will be pretty hot and humid so don't get your hopes up too much. I'm not hitting the track til it gets cooler.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mac_24_seven &raquo;</TD></TR><TR><TD CLASS="quote">

I have street tires though.. I"ve always been told that heating up street tires makes them more slippery, sicne it's a different compound than drag tires..
</TD></TR></TABLE>

That's correct. Just make sure you drive around the water pit and rather than doing a burnout just spin the tires a little bit to help loosen any dirt/gravel that may be on the tires.

 

Well it's suppose to be a 70% chance of rain today.. and it's raining outside now

Damnit.

Well, if I don't get to go to th track, I'm pickin up an HF CRX.. Least the day will be somewhat salvageable.

 

i run a 20 psi in my front tires and ran a 15.1 with my ihe ls with a 2.1 60. good luck

 

Whats done to your LS besides i/h/e to get it to 15.1?

 

I thought there comes a point in deflating tires where it actually decreases the contact patch, because as you deflate the tire, the tread shapes an upside down U...and you're running a bit on the sidewall...hmm i heard that from somehwere I forgot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BigD3154 &raquo;</TD></TR><TR><TD CLASS="quote">Whats done to your LS besides i/h/e to get it to 15.1?</TD></TR></TABLE>

no kidding

 

15.74 was my best.

Myhats off to the guy who did 15.1 w/his LS. Your a damn good driver.

MY first run was @ 25 psi and i hit 15.8. I spun a good bit so I dropped the pressure: thing is, the pressure gauge didnt work so I let out "some air" (stupid thing to do).


Ended up hurting myself. When I'd shift to second, I'd wheel-hop and my launches didnt get any better.

My last run, 15.7 I aired em up to 23.5 PSI.. but w/ a 2.4 60' time, I'm not gettin anywhere fast.

 

2.4 60 is ok.

a lot of **** ive done doesnt really matter but ill list them off for ya.

1996 Integra SE
obd1 p75
AEM Intake, Greddy 421 SS Header, test pipe, HKS HiPower Exhuast, exedy stg 1 clutch with fidanza 9 lb lightened flywheel, bm fpr n gauge

im running on all season hankooks with tire pressure at 20 psi. a little bit of weight reduction like spare, rear seats, cf hatch. my 60' times were at 2.1 consistently. and i ran 15.1 consistently. 60' times make or break your times.

 

[QUOTE=mac_24_seven]

Myhats off to the guy who did 15.1 w/his LS. Your a damn good driver.

QUOTE]

thanks. high 15's is where most ls's are sposed to be at. people have told me i have a freak ls? btw i have mad wheel hop as well. im thinkin with full race traction bars and motormounts i should be good to go