So my car just got off the dyno yesterday and made 354whp/376wtq on a dyno dynamics, which is roughly 415whp/440wtq on a dynojet. 31psi on E-85 is fun and the clutch held up on the dyno, but I figured it was only a matter of time before my clutch went.

This has happened twice to me, once in 4th gear at low rpms and once in 5th gear low rpms, both were pretty much full throttle.

The car didn't go into limp mode, so I am wondering if this means the car detected my clutch was slipping? It still drives decent, I just don't think its putting all my torque to the ground.

Here is what the dash looked like when it happened, minus the parking break and seatbelt lights of course, and I didn't turn the ASC off, the light was coming on when this happened.



So is my clutch just not holding the rediculous torque? Or is this something else that I should worry about?

I simply pulled the two 7.5 A fuses in the engine bay to reset this and then everything went back to normal.

I guess the reason I assume its my clutch is because as I recall to check for slippage you are supposed to put the car in fifth gear at low rpms and go full throttle to see how rpms rise. Not to mention the car doesn't feel like it has an extra 75 wtq from two days ago.

Thanks for input guys.

Anyone? I know there are others out there with this kind of power, and I know other peoples clutches have taken a dump. Maybe I will just give this some more time.

Are you still on stock clutch?
It was not meant for that kind of power.
Clutch slip is simple, your rpm rise but the speed does not. It's more pronounce in lower gears.

you dont have to put it in 5th to test the clutch. I would suggest a lower gear, let the revs drop to 3k, floor it and see if you steadily increase speed. If your acceleration decreases while your rpms are still climbing, clutch is going bye bye.

+1

Likely the dash is indicating you are exceeding the torque limits tables in the ECU, I doubt it can detect if the clutch is actually slipping. I guess it could be comparing forward motion versus wheelspin and RPM.

I'm sure the car is flying for a stock turbo, but most of that power is from low end torque hitting hard from 3500-4500 rpms where it will let you boost that 31 psi, beyond that range and it is going to taper quickly down to 20 psi at redline because the compressor side of the turbo is maxxed for flow.

If that Dyno Dynamics is more than 30% driveline losses I would be surprised but as we all know dynos can read wildly different. A Dynojet usually ends up around 20% losses so likely 387 whp or 465 crank hp is about what you are putting down. The only way I would believe it was putting out higher power is if you were hitting 120 mph trap speeds in the 1/4 (~500 Crank HP) which I would imagine is possible on E85 with the timing advance increased to the limits to counter the boost taper.

The dyno has about 25% loss I think. The dynojet is just our local one that reads high for a dyno that I was directly referring to. Some dynojets are more reasonable like AMS's. But others read super high. I think 455-465crank is pretty close.

I don't think my clutch is slipping because it seems to be holding fine is 1st, 2nd and 3rd. So not sure what is going on.

My tuner said he hit the torque limit table once on the dyno and then he raised up the tables and it was fine after that. He tried doing some partial boost stuff on the dyno and he couldn't get it to happen again. He said it feels more like hitting a wall when it happens like a rev limiter. When this happens my car still seems to run alright, just my ASC light stays on and the dash looks like it does in the pic.

Not sure what's going on with it. No one has seen this happen before?

Ps. My car has tons of timing in it right now and actually my tuner never ran into knock, he kept adding timing up top but it stopped making power so he backed it off, E85 is sweet.

Well you will make more power/torque in 4th and 5th gear. There might not be enough load in the lower gears to detect slippage. Try 4th or 5th gear to see if it happens.

4th and 5th gears are where I have been seeing this.

So maybe it is the slippage or maybe it is the torque limit tables, not sure. I know a new clutch is a good idea, but the stock one is holding fine believe it or not, this weird dash thing is all I have really had problems with, and isnt present in 1st through 3rd gears. The car is still a blast to drive when you hit 30psi

I am hoping someone has seen what I am experiencing so I can know for sure, if it is the torque limit table then I can get that adjusted, if my clutch just cant handle all that torque well then I will have to fix that, which is going to happen sooner rather than later regardless.

Hmmm, I do remeber seeing that skid mark warning light when my car was untuned with bolt-on's. Basically it seemed to happen if I mashed the throttle in 1st or 2nd gear but you couldn't always replicate it so it must have been right at the edge of the torque limits tables.

i have fought this light for months
i have to agree with hiboost this light has to do with your tune
not a slipping clutch
i ran 390 whp with the stock clutch for 3 or 4 months then one day wham the clutch started slpping i drove it like that very gentley tell my new twin disc got here
the car will not tell you your clutch is slipping

i told the last tunner i went to about this light and when i left 4 or 5 weeks ago now i have not seen the light sense

So I guess try having my tuner raise up the torque limit tables a little bit more?

Maybe the extra load on the street did this?