UpRev ECU tune results for Semtex's Z

RCZ

You guys have never felt a gear go flat around 3k rpm on cold starts? Its slight, but its there...kinda feels like "ok buddy im cold, shift here please" It may well be a mechanical thing too from the engine just having to warm up to seal well.

I didnt say they couldn't. I want them to work around this problem just as much as you do, I'm waiting for the fix to go get the car tuned. I'm sure they will look at logs to see what the car is doing electronically around those points and pinpoint the problem then work out the bug. Its going to be a bit annoying to have to reproduce the problem on completely cold starts though haha. Chances are they are working on a fix right now...

semtex

I do not know if Sharif has contacted UpRev yet. But I believe John from Z1 has. In any case, it wouldn't hurt for you to contact them as well just to make sure they're aware. Let me know what they say.

I think you're experiencing something different. What I'm feeling isn't up at 3000rpm. It's between 1000-2500 rpm, right where you tip the throttle in as you feather in the clutch. The easiest way to describe the feeling is of a sticky throttle. You depress the gas pedal as you let in the clutch, and the revs just don't climb. It just kinda lags and you don't go anywhere. Then all of a sudden it 'unsticks' and jumps up to around 2500rpm (give or take a few hundred), resulting in a sudden lurch forward. So what happens (with me at least) is I reflexively disengage the clutch when I feel the lurch. But then I'm sitting still again. To a bystander on the outside, it probably looks like I'm brand new to driving MT. What I have to do to get moving is make a conscious effort to override my reflex and not disengage the clutch completely when it lurches. Just lighten up the clutch without complete disengagement. That way, I get actual forward motion and proceed on my way. It's anything but smooth. lol

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"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.