Test N Tune
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
FWIW i dont do burnouts to warm up my drag radials anymore. I was told by others at the strip using drag radials they dont need it. U can check the difference in your 60' times but didnt make any difference on my car. Wish i had known that when i first began to use them. Would have saved a lot of rubber.
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
I'm running a 870 with a Fastchip. He's the only person I know of that still tunes chip for the 870dont forget that the 870 is batch fire and could contribute to running rich, Ed could finetune with some datalog maybe ?
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
Sorry i dont understand 1/8 mile times as i only race 1/4 mile (and in my camaro). But i have a traction problem even running MT DR @ 18psi and cant get my 60' times under 2.1sec. So i need to get it to hook and that means a better torque arm and change my weight balance if possible. I dont run drag shocks and my camaro sits pointing down in the front - making it light in the rear on launch. Plan to fix those items to stop some wheel spin. Dang tires spin even if i baby the throttle on launch. p.
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
FWIW i dont do burnouts to warm up my drag radials anymore. I was told by others at the strip using drag radials they dont need it. U can check the difference in your 60' times but didnt make any difference on my car. Wish i had known that when i first began to use them. Would have saved a lot of rubber.
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Sorry i dont understand 1/8 mile times as i only race 1/4 mile (and in my camaro). But i have a traction problem even running MT DR @ 18psi and cant get my 60' times under 2.1sec. So i need to get it to hook and that means a better torque arm and change my weight balance if possible. I dont run drag shocks and my camaro sits pointing down in the front - making it light in the rear on launch. Plan to fix those items to stop some wheel spin. Dang tires spin even if i baby the throttle on launch. I dont kow what the corvette guys use for a torque arm but u need something to keep the axle(s) from wrapping upward on a launch. I think when u get to a high pwr level the corvette axles tend to move the tires outward at the top (pos camber) and lose some traction as the rear end tries to "stand up". So the cure sometimes is a straight axle.
IMHO u may have something to gain in a tune but u need to hook to use it. Still will be a fast car, just will spin like on ice from a stop.
IMHO u may have something to gain in a tune but u need to hook to use it. Still will be a fast car, just will spin like on ice from a stop.
Last edited by bjankuski; Oct 29, 2015 at 02:55 PM.
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
On my last time out to the track for test and tune, the track was poorly prepped and my best 60ft was 1.7xx. I went back out to the track a couple of weeks ago for test and tune. This time I did my TNT in between classes of the bracket racing program. Track prep was great! I made one change in tire pressure and made 4 passes. My best pass of the day was: (I'm car 85)
1.638.... 60ft
4.946....330ft
7.220....594ft
7.731....1/8mile ET
88.04.....1/8mile MPH
I think I can maybe pick up 3 or 4 tenths with some improvements in the tune as it was still running rich. My AFR gauge was reading in the 11's range.
1.638.... 60ft
4.946....330ft
7.220....594ft
7.731....1/8mile ET
88.04.....1/8mile MPH
I think I can maybe pick up 3 or 4 tenths with some improvements in the tune as it was still running rich. My AFR gauge was reading in the 11's range.
