2nd gear start tune
- Thread starter 06dmax
- Start date
What is so much better about doing this? Would it be worth anything for a stock turbo pulling truck to try?
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think I might try this. Ofcourse this is just wheel speed but max I ever see is 22mph and 3600rpm
Leaving B alone too I think is a good idea incase you like to drive around in t/h like I do. Unless there is some funky stuff that makes it not work as good without setting pattern B like this too??
Do you need to adjust D5033? Alot of those tables mentioned are for wot throttle mode so how will it start in second if its not reached "wot"? Also D5020 and D5035 seem like they will just cycle the trans to 1st and 2nd? Or am I wrong, just what it seems like it would do if they are both set at 0?
Sub been thinking of doing this as well for pulling, but don't know if it is worth it on a stock turbo truck.
ben, jakes truck is a 2nd gear start,heck he mite even be a 3rd gear start by now...
its harder on the trans/converter...but you can build more boost on the line,an get up to speed faster,if ur truck is like ours,it will roll threw the brakes.
our truck hits 26 mph with 33's..when we broke everything at danville we were running 35's/28mph,and i think if it didnt hop"damn mud",we would of keep on going out the gate...
just my 2cents
Well my speedo was off appearently. I'm going to try a second gear start tonight if I don't have to work late. I'll post my findings. Only thing is I'm constantly dicking around with my Ecm tune, so each pull is different so my results may be skewed.
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I talked to Dustin at Diesel Addiction about a second gear start. Drholiday and he both used it with sucess at the dragstrip. He told me the biggest benefit is when you have a setup where you push through the brakes and have trouble building boost off the line. Second gear start makes it easier for the brakes to hold you back.
....but also makes it much easier to burn up your converter if you sit on it too long at the starting line. I never did try a second gear start even though I talked about it a lot.