so evos launch at 5k? damn

 

Huh? Do you mean that if you release the brake with the RPMs still increasing, the car launches?

There is NO WAY the car will launch with the brake depressed fully no matter what is done with the throttle or RPMS.

 

He definitely meant release the brake.

Can anyone with SST experience answer these questions:

I get a brutal clunking from 1st to 2nd gear when I first begin driving the car. After that it shifts smooth. Do you guys start off in Normal mode in order to warm the tranny up?

Also, when starting from a stop do you rev the car first and let the revs rise a bit and then take off, or just step on the gas?

 

I kinda think that the transmission expects you to shift while still accelerating. It shifts smoothly with the gas pedal still depressed. With that said, I do lift my foot sometimes when I shift, it doesnt seem to make much a different. I dont really think the transmissions cares about that too much.

I wouldnt call it a 'brutal clunking' on the first shift from 1st to 2nd. That kind of makes it sould like the transmission is making an audible sound. I would describe it more as a jerk while shifting. This happens to me every time after first starting the car and the first shift occurs. I have tried Normal Auto, Sport Auto, Normal Manual, and Sport Manual. What setting you are in doesnt seem to make too much of a difference. The jerk almost always occurs (sometimes worse than others). I have also experimented with Reving up a little higher (maybe around the 4k range) and it sometimes seems to make the jerk a little less.

I think the first shift jerk is an unavoidable reality. However I dont think it is anything to be concerned about. 2nd -> 3rd is always smooth and any shifts after the FIRST shift after the car starts for that matter. Must just be that the tranny has to warm up.

 

Thanks KGH. I figured as much but it's always nice to have a little peace of mind.

2nd to 3rd is never a problem for me either and I (for whatever reason) when shifting in the upper RPMs (after the turbo really kicks in) it's smoother.

 

The SST box does full-throttle upshifts and downshifts without any issues. It shifts rougher and uses a higher shift RPM point when cold (for example the car won;t move until ~1800 RPM from a stop when cold in D or R, and the 1-2 shift (in Normal mode) is kinda harsh at ~3K when cold. The clutches also engage (or start to engage when moving from a stop) at a higher RPM when cold (however cold is defined).

After the engine and gearbox reach normal op-temp, the initial take-off is closer to 1100 RPM and the 1-2 shift, under light throttle Normal, is about 1500 RPM.

 

YES .. I was referring to the brakes sorry ..

Since you're pedantic .. when cold SST shifts at 2500rpms .. not 3000rpms
After warmup .. it is with reference to speed and TPS ..

 

I've noticed that the car will respond quicker from a stop if I hit the accel. with say
a quick on off then back on it. This is with no brakes applied, so in place of the normal transition from:
brakes on -> brakes off -> gas (full throttle)
it is
brakes on -> brakes off -> accel. on -> off -> full on

Sometimes it's spot on, but that is the one driving adjustment I had to make with the SST vs. driving the VIII is that quick start to get away from stops etc... basically it's getting on the gas a bit earlier to compensate for it.

 

Ash74 I've used that method too. Give the throttle a quick jolt to feed it some gas and raise the revs, then take my foot off it, and then put it back down and keep it there.

 

A little bit off topic .. just need some ideas here ..

What do you think is a good launch RPM for the MR ??

Is 5500rpms too high ??
Or too low ??

My peak torque is around 3300rpms .. I say 4500rpms ???
Would you guys like to launch in say .. normal mode ??

 

I dont have much of an opinion on what RPM to launch at, but Why would you want to launch in normal mode. The shifts are too slow compared to the other two modes. If you are launching, your are going to want to be shifting quickly. I supposed you could be in manual mode which is a different story.

I take this post from you to mean you have found some ecu parameters related to this.

 

4500 sounds like it would be ok.

What about different launch RPM for each mode? possible?

 

I believe it is possible to launch at higher rpm in super sport as appose to normal.

 

Testing now ..

I don't know why anyone want to launch in normal also .. just asking .. coz I find it irritating to sit at th lights toggle to S-S and then rev up to launch ..

How about lengthening the time allowed for launch before cutout ?? time bomb that ..

ASH74 .. different launch rpm for now is not possible .. maybe later .. when I'm comfortable to reprogram it ..

 

I finally data logged my 0-60 today with Cobb AP:

4.8s without launch control - mods are Gruppe M intake, ARC intercooler and Cobb Stg 1.

I haven`t tried with launch control mode yet, want to preserve the clutch until theres a upgraded clutch available for SST. I suppose it would be at least half a second quicker with launch control?