Cant remember exactly how its done. I was on brake and bringing rpms up to about 2k and then release brake and slam down on gas. Car seemed to launch pretty well out of the hole like that. Never got a slow down message.

 

Try 3-3.5k

 

Timing is everything! Hold it too long and.....


fail

 

Get evo tcu flash and launch at 5k rpm

 

I've never really tried this. Can someone tell me why building to 3500 rpm is better than 2800? Is it because revs would drop when you let your brake foot off and you would be below boost?

 

yes.

 

Yeah doesnt get into boost but is still better launch than trying to slam the gas at idle

 

This is my car, watch the nose dive right after coming off the lights. That's holding it for too long, lol.

 

I saw that, but looks like it recovered pretty quick

 

It doesn't seem like much to watch it, but in the car it feels like an eternity. Plus its brutal for the timeslip, as you can see it lost me over a half a second on the run.

 

Key is to rev it as high as you can (which will see odd clutch slip rise) yet still be able to recover the slip with odd clutch pressure increasing when you come off the brake and do all this before odd clutch temp hits 170-180.

Rev (slip) it too much past 3000 or for too long and temps rise quicker than the time it takes clutch pressure to get slip back down to zero. Too much slip and the clutch pressure cant stop it in time, you hit the temp limit and slowdown. Sometimes you can just get it in time and skirt that 170 value and you'll get the msg pop up but the sst wont open on you.
Few sst tweaks to make sure clutch pressure ramps up ASAP and full pressure to help shorten that slipping time.


The more launches you do it, the higher the "resting" odd clutch temp value gets so your window off opportunity to slip the clutches gets smaller and smaller.
You can raise the temp limit, but i don't have big enough cojones to try that.

LC if you got it, at 5k is slower than going at 3k for the ra turbo. the torque is there down low plus you get that extra bit of time in 1st gear which has the gear advantage.

 

what happen to the tap method? I thought that was the way to go


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That's what the tap method does. It lets the odd clutch slip. So you can rev it up to 2-3k then engage the clutches when you release the brake.
Tap is quickest but finicky and takes practice.
Lc is consistent for 1.9 all night long which is handy for testing other parts of your tune/parts etc

 

Stage 2nd yellow pair: tap tap tap tap tap...
Lights start to drop: brake torque
3rd yellow before green: release brake

As long as I don't get a slow down message, which is very rare, that's good for consistent 1.7X 60' or better

 

when u brake torque what rpm do u hold it at or do u just put the pedal to the floor. the way I launch is tapping the gas around 3500 rpm and just mashing the gas and letting the brake go at the same time but I can never get a better 60' then 1.9



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