Justins00ss

iTrader: (18)

So I ran my car last night. It was def hot and muggy out so I didn't have that going for me. the car wasn't 60 llike it did when it was a m6 due to only being able to foot brake to 2500 or so. Def need to get the trans brake hooked up. Bascially when my car went 10.90 it was cold out and I was launching at 6k, last night the car ran pretty much the same off of the footbrake and a much shittier da.

Best pass of the night and new best 1/8mph

60 -1.72 330-4.68 1/8- 7.13 Mph- 100.0 1000- 9.25 ET- 11.05 @ 125

Need to figure why the car couldn't 60 better off of the footbrake. Granted this is my fiirst time out with a auto so I sure I need some practice.

Do you guys think flashing it from a dead idle would work, even though my nos doesn't kick on till 3000rpm.

I am not to worried about the trans brake cause I know it will make a improvement but I do think the car should 60 better off of the foot brake no?

joelster

You'd be surprised how many cars don't go any faster with a tranny brake. When you are launching it right now, are you driving into the converter on the line or just holding it slightly above idle? My car would always ET better when I would drive it up to 3000-3500 on the line. If you launch it off of an idle, the launch might feel better but chances are the ET will suffer. Just go to the track and experiment with launching it at different rpm's. Every car is different.

Justins00ss

iTrader: (18)

Yyeah I tried stalling it up to like 2500 or so and then it would just push through the brakes.

John02SS

iTrader: (47)

Kinda a tough deal, as the converter is tight if it is pushing at 2500. But for your setup on the bottle it has to be or it will flash high. I would have though it would have 60'd better for sure. Are you spraying it right away or on a progressive?

Justins00ss

iTrader: (18)

Right away

AChotrod

iTrader: (17)

Ive seen guys foot brake better 60s than on the trans brakes. Not the case most of the time but it does happen. TBs are more consistent than anything. Also try going just off idle and see what happens.

SuperSlow02

iTrader: (16)

Damn that converter is very tight....seems way tight for that stall speed. I can footbrake my 5200 to almost 5k on the foot brake. Only flash to 5500 on the bottle.

SS MPSTR

iTrader: (1)

Are you loading up the suspension when holding the car with foot brake at 2k-2.5k RPM? My car 60's worse in this scenario. Try leaving off idle, especially when track conditions aren't great.

John02SS

iTrader: (47)

Any chance it's blowing through the converter when the bottle hits. 60 is REALLY soft for a 150 hit car. With a 4200 verter and a 150 kick a cam only car should go high 1.4x to low 1.5x with traction. It should do better than a 1.72 NA with that much converter and 4.11's.

SuperSlow02

iTrader: (16)

Not likely(blowing though) might want to call up Greg and see what he says.

JL ws-6

iTrader: (50)

To me I bet the converter is too tight. And if you're footbraking it, the nitrous isn't hitting right when you stab it like it would if you had a trans brake in the car, and had the nitrous activated with a WOT switch and the transbrake noid.

my old setup would go to 4200 on the brake, and would flash the converter to about 5000 at the hit. That converter worked like a charm in a car that went 8.23 with nitrous... it was a little tight in my car (needed to put a 2nd kit on that thing and it would have been very happy)

I'd think with a setup like you have in the car... I'd want it going to about 4800 and flashing to about 5200 on the hit.. shoud have no issues blowing thru one that's like that.

Get that trans brake wired up and then see what it goes to with your foot to the floor on the brake... if it's less then 4000, the converter is probably a little too tight.

Fwiw.. I tried all that foot braking and whatnot with my car n/a and it would et the same off the brake from about 1100 rpm (just enough so the TB was cracked so the airflow was already started and there was no bog/stall of airspeed when the TB was slammed open) or off the transbrake with my foot to the floor.. one thing that did improve greatly was the consistancey, and my reaction times. If the converter is close to being right, it should work about the same off the brake and footbraking it, at least from my exp.