Time difference between spooling and not spooling

[Dr. Jeckel]

I raced an A4 LS1, with a 75 dry shot and flowmaster, the other night. We raced from about a 20 punch and he only beat me by 2-3 cars all the way through 3rd(when I got out of it). Then we raced from a stop and we stayed side by side for awhile but my trans wasn't shifting real quick 2nd-3rd and he pulled me by 2-3 cars, then 3rd gear just held there for a couple seconds before shifting into 4th and he pulled me again, then I got out of it. I was pretty happy with how I ran, considering what I have done and having fg street tires,although traction wasn't a problem since I didn't spool up any. Really the first time I've raced the car too.
How much of a difference would it have made to spool the car up by brake boosting while going or from a stop? The lag on the turbo isn't bad, but it does take about 2 seconds from a stop to reach 15psi, which is what I race at.

 

[TurboDave]

In either case (rolling or standing start) it makes quite a significant difference.
If I suspect a "confrontation" is about to take place, I'm building boost against the brakes (rolling or sitting).

But then again, you also gotta KNOW the limitations of your tires for either situation.

 

[Dr. Jeckel]

Considering good traction and a 5psi launch compared to no spool, would my outcome have been different? I guess I would've gotten the jump out on him and stayed there.
My limitations are definitely tires if i were to spool it up to anything past 2psi.

 

[cathan]

stock converter? i used to break my tires at 1800 with very little boost.

had converter restalled to 2800, put on s-10 wheel cylinders and big rear brake shoes. now it holds 10-12 psi at 2600-2800.

with your other mods and some stall you might chew up that other guy!

 

[77tech9]

LS1s are the only cars that worry me
I just can't beat them, yet...

 

[Dr. Jeckel]

Does anyone have any track times where they spooled it up on one run and not on another? Just trying to get an idea of the difference in e.t. as I have not had a chance to make alot of test runs or get to a strip.
Thanks, James.

 

[scottyb]

No time comparisons, but you should brake-torque it a little. It will make a good difference. On street tires, I bring it up to 0 lbs while holding the brake, and roll into the throttle instead of stabbing it when the light goes green (or last yellow at the track). If I stab it, the tires will go up when the boost runs north of 15 lbs.