Hey guys so I've honestly tried searching, not sure If I'm Wording it wrong, but could someone explain to me on what to look for, for clutch slippage when logging the tc-sst. Ive got the def file and I've already done some 3rd gear pulls. Thanks

 

So you've actually got logs of this SST stuff, and you want to know how to interpret 'em?

You've got an "odd gear" clutch and an "even gear" clutch. One clutch will be working, one won't - they will alternate as you row through the gears. Ignore the one that's not working, and look at the one that is.

Mine looks and feels healthiest when clutch slip stays below 100rpm. But it depends on a lot of things!... The SST does all sorts of stuff to "safely" manage torque, including deliberately slipping its clutches a bit (or a lot). I think engine coolant temp plays a part on how much torque the ECU tells the TCU is coming its way (although I'm no expert there). SST fluid temp makes a difference. SST fluid age/quality too, probably.

I sometimes see a bit of slip at the start of the "highest" part of the torque curve, and occasionally around the point torque starts to drop off again.

Sometimes it's there for the first pull, but not the second or third. SST temp takes a long time to come up to what's probably its ideal temp. Anecdotally, that's around 75-85C, but feel free to use your own random temp number, hehe.

Have fun...

Rich

 

Thanks for the write up, it helped a lot. Now for my next question, what should i do if my rpm on that certain clutch goes well above a hundred, if i understand correctly that cannot be good.

 

What tune are you running?

edit: Duh, v27 base map. Sorry, it's late here.

Rich

 

...and to actually answer the question...

First of all, don't freak out about it. My logs sometimes show slip for a moment here or there. Are you getting slip in SPORT mode once the trans is well warmed up?

edit: By "well warmed up", I mean logged SST temps over 60C (140F). And that can take quite a while...

Feel free to post up a pic or a log...

Rich

 

I will post a 3rd gear pull when i get home tonight. As for what tune I'm running, I had micheal golden use the 2.7 basemap to tune my car cause I loved the shifting so much great work to you and razor by the way.