021le

2002 NBM 1le z28 a4
hardtop 22k+ miles

Here are the current mods.

Yank 4000 RPM stall converter
trans cooler
HD2 shift kit
233/236 custom cam
upgrade springs/push rods
aftermarket oil pump
custom dyno tune (429hp MD Dyno)
Hooker long tube headers
Underdrive crank pulley
egr/air delete
MSD wires
Becool Radiator 160 stat
Intake lid with K&N air filter
Lanes true dual 3in exhaust with twister mufflers
Dr. Gas X pipe
Auburn locking rear end with 4:10 Richmond gears T/A cover
QA1R front coil over 275# springs
removed front sway bar
Pa racing turbo k-member
QA1 rear shocks
Drag bags in rear springs
MWC front and rear bumper supports
removed rear seat and belts
Subframe connectors
weld rt-s 15/10 with 275/50-15 Hoosier drag radials rear
weld rt-s 17/4.5 with m&h radials up front

anything not listed is how it came from the factory

3400# race weight




Best time so far. Shooting for that 10.99 pass

11:00 pm
temperature = 86f
45%humidity
29.92 in pressure

DA=+2594 ft
Relative Density: 92.63 %


1.5124 60ft
7.0315 1/8th
96.32 mph
11.0646 et
120.74 mph

tires set at 18 psi. 2nd gear burnout.






What psi do i put in the rear drag bags currently at 0 psi in both bags?

also what shocks setting do you guys use?

I have the fronts at full loose, and the rears 6 clicks from full loose.

def helped 60 ft going from 10 to 6 clicks in the rears.

Bitemark46

Would you happen to have any vids of your car launching?

If you have the airbags in the sprngs I think they go up to 30psi. I have mine (right rear only) at 20psi.

Are your rear shocks SA or DA?
What's the track prep like on average?
Tire pressure?
Launch rpm?

I've always been told on sticky tracks you can tighen up the rear shocks. For poor track conditions you want to go softer (to lessen the hit).

But you do really need an ARB.

-Mark

BMR Sales2

iTrader: (40)

These are all very good questions! A video would be super helpful if you have one.

I am not a big fan of air bags in the rear springs at all because they are nothing more than a band aid for not having a rear anti-roll bar. A good quality rear anti-roll bar like the BMR one we make will definitely help out with the 60ft and consistency.

A good generic baseline for the shocks is a couple clicks from full soft on the front and couple clicks from full stiff in the rear. This allows the car to transfer weight and keep good downward pressure on the rear tires.