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TS1955
05-14-2009, 02:03 PM
Just curious on how many racers use a two step for a launch control & how many use it as a safety device, putting in a chip that's a little above your convertor stall?...I personally use it as a saftey device. What do you do?

TS1955

hammertime
05-14-2009, 04:14 PM
launch control, more consistent this way for sure.

curtisreed
05-14-2009, 05:44 PM
I use a three step, burnout, starting line, and high side.

Curtis

kod99
05-14-2009, 07:04 PM
I use a three step, burnout, starting line, and high side.

Curtis

X 2

TS1955
05-15-2009, 02:15 AM
I've never had a problem with being consistant, 60ft times don't vary much. Except when I used to Super Gas race with a Chevy Monza with a 12 bolt rear and I chucked a rearend on the starting line...60 ft sucked on that pass. Now they vary from track to track a little. I feel a 2 or 3 step is hard on the engine. JMO


TS1955

Tod74
05-15-2009, 03:57 AM
I personally use it as a saftey device. What do you do?

TS1955

what are you safeguarding against??? don't say over revving please....I mean you have the high end limiter to keep the motor together what is the purpose of limiting just past the converter?

hammertime
05-15-2009, 04:02 AM
I've never had a problem with being consistant, 60ft times don't vary much. Except when I used to Super Gas race with a Chevy Monza with a 12 bolt rear and I chucked a rearend on the starting line...60 ft sucked on that pass. Now they vary from track to track a little. I feel a 2 or 3 step is hard on the engine. JMO


TS1955

how consistent is it ?

fluid temps changes, fluid gets thinner when it gets hot and the stall changes, meaning it could go from (example) 1.20 to 1.21-1.215

TS1955
05-15-2009, 05:57 AM
I'll answer Tods question first. As long as you have your tranny brake activated and you are on the "low" side of the two step, the high side chip doesn't function. So if by chance you come up on the converter and it breaks, you have NO safe guard. Unless you have a chip in the low side.
When I used to Super Gas race I would leave the line at what ever the converter would stall at for reaction time. I got used to it and haven't changed. Hope this helps.

And hammertime my 60 ft will vary about .01-.015 about the same as yours.

TS1955

hammertime
05-15-2009, 07:27 PM
And hammertime my 60 ft will vary about .01-.015 about the same as yours.

TS1955

That was an example above, you should start using a 2 step and tighten them up. mine last time out went from 1.128-1.130 it moves much more then this its time for tires or something else on my car. :D

Tod74
05-16-2009, 01:42 AM
I'll answer Tods question first. As long as you have your tranny brake activated and you are on the "low" side of the two step, the high side chip doesn't function. So if by chance you come up on the converter and it breaks, you have NO safe guard. Unless you have a chip in the low side.
When I used to Super Gas race I would leave the line at what ever the converter would stall at for reaction time. I got used to it and haven't changed. Hope this helps.

And hammertime my 60 ft will vary about .01-.015 about the same as yours.

TS1955


I get it....seems obvious now that you explained it. I didn't think about the high side being shut off while the button was in....duh. :D

TS1955
05-16-2009, 07:46 AM
Hammer, I see that was an example now you pointed it out. But, that's about what mine varies. Sometimes I'll roll in a tiny bit more from time to time. I did try the 2 step for a weekend a couple of years back.

TS1955

hammertime
05-16-2009, 09:09 AM
Hammer, I see that was an example now you pointed it out. But, that's about what mine varies. Sometimes I'll roll in a tiny bit more from time to time. I did try the 2 step for a weekend a couple of years back.

TS1955

I see lot of people do it this way and it works ok but when you need everything to be the same (within thousands) a 2 step chip is almost a need be. If you were to log the difference in rpm between 130 and 180 degrees trans fluid temp you'd see a difference, causing it to not repeat as good.