Your experience foot brake vs. 2 step regarding ET

[btrc]

Larry and Alan,
When you use the 2 step is it set for the same RPM that you were footbraking to?

[Sam Capizzi Jr]

I use a 2 step with a button in Pro and footBrake in street when bracket racing and found that the 2 step is about 2 hundredths slower in ET but .02 faster in reaction time. This is at 3000 rpm in my car. I load the converter to 3400 to make up the difference in RT

[ALMACK]

Originally Posted by btrc

Larry and Alan,
When you use the 2 step is it set for the same RPM that you were footbraking to?

Bob: In my case no, so there really is not a fair comparison I suppose.

It would be an interesting test tho to set the 2 step down lower to the point where I leave on footbraking.

[Rusty Davenport]

Originally Posted by ALMACK

Bob: In my case no, so there really is not a fair comparison I suppose.

It would be an interesting test tho to set the 2 step down lower to the point where I leave on footbraking.

Exactly my question------ like at 2000 on the 2 step OR if its a direct linkage quadrajet get on the 2 step before the secondaries are open----------anyone care to comment ???

[HandOverFist]

Originally Posted by Rusty Davenport

Exactly my question------ like at 2000 on the 2 step OR if its a direct linkage quadrajet get on the 2 step before the secondaries are open----------anyone care to comment ???

All the Stock racers I have asked leave with the throttle already matted when using the two-step...I have not tried it yet. Mine is chipped at 3000 and I often hear it when staged. I have resisted trying it because it is just the opposite from what I am used to...leaving off the brake pedal instead of pushing the gas pedal.

[Rusty Davenport]

Originally Posted by HandOverFist

All the Stock racers I have asked leave with the throttle already matted when using the two-step...I have not tried it yet. Mine is chipped at 3000 and I often hear it when staged. I have resisted trying it because it is just the opposite from what I am used to...leaving off the brake pedal instead of pushing the gas pedal.

So let me get this straight------you are using the 2 step but no more throttle than it takes to reach the chip ????

[HandOverFist]

Originally Posted by Rusty Davenport

So let me get this straight------you are using the 2 step but no more throttle than it takes to reach the chip ????

Not by intent, but rather by design Rusty. As you can see in the image the activation button is in the brake pedal itself...I know some use a micro-switch.

[Rusty Davenport]

[QUOTE=HandOverFist;511057]Not by intent, but rather by design Rusty. As you can see in the image the activation button is in the brake pedal itself...I know some use a micro-switch.

[/QUOTe

you almost answered my question.....why aren't you putting the gas pedal on the WOT on the floor instead of stopping when you hear it break up ???? Is it any faster not to mat it ???

[FireSale]

Here's my take. If you floor the pedal on a two step set at 3000 or so, the butterflies go wide open and the pump shot from a double pumper is expended with the car on the line. If you rev until you just hear the stutter kick in you still have throttle travel in reserve and get the pump shot when the engine goes under load at launch. I haven't raced enough to tell the difference but I feel more like a racer when I mash the pedal on the last yellow...I mean green light...

Dale

[HandOverFist]

Originally Posted by FireSale

Here's my take. If you floor the pedal on a two step set at 3000 or so, the butterflies go wide open and the pump shot from a double pumper is expended with the car on the line. If you rev until you just hear the stutter kick in you still have throttle travel in reserve and get the pump shot when the engine goes under load at launch. I haven't raced enough to tell the difference but I feel more like a racer when I mash the pedal on the last yellow...I mean green light...

Dale

Kind of how I used to think about it as well Dale, but according to those in the know the engine does not care about that pump shot because of the airflow with all the butterflies WOT. I see them leave fine so it must have merit. -