So I got the protomotive xpipe and tune. I installed the exhaust a couple months ago but I had a full tank of 93 octane so it took a while to burn it off. Well I finally got around to a full fillup with E85 so I figured I would post my feedback.

1. Todd was amazing to work with, answering my 10000 questions quickly and shipping everything out quickly as well.
2. The catless xpipe exhaust sounds great. I don't notice any drone and even my 7 year old daughter told me today to keep the radio off so she could hear the Porsche.
3. The E85 tune is ridiculous. I have driven fast cars before...cars with 500+rwhp and the Porsche on E85 scared the **** out of me the first time I spun her over 5k rpm. The tires can break loose easily.
4. The tune retains 100% stock idle and drivability characteristics. No differences at all.

Now the bad....so I was merging onto the Autobahn today. Third gear then shifted to fourth, then 5th at around 4k rpm. I floored it and at about 5k rpm the clutch slipped badly. I was ready for it and shifted to 6th and got off the gas.

So now I have to decide if I want to do a clutch swap over here where is it VERY Very expensive or do I detune it until I get back to the US in about 2 years.....I was hoping it would last at least a little while.

 

Cool, any dyno numbers? 997.1?

 

No dyno numbers yet. I would love to find someplace over here

 

You will lose more in depreciation over the next two years than you will paying for a clutch change. Enjoy the car now! Congrats on picking a great tuner

 

Good luck on driving a detuned car for 2 years

 

The stock clutch won't hold a good 93 octane tune if you have an exhaust...never mind the torque an E85 tune can produce. You will need a clutch unless you want to drop your power levels back down to more mild 93/91 octane levels.

 

Bro you have to get a clutch.

 

Nick, did FVD do your clutch? I might give them a yell to see if they can do a clutch and gt2 slave....

 

I know I have to replace the clutch, just have to decide which one and find a place to do the clutch and gt2 slave conversion.

 

Agreed you will need stronger clutch, but if cost is so high there and it's not possible... you don't necessarily need to detune. I believe that the problem is partly from your shift at 4000 rpm and then WOT. This creates the highest load possible on the clutch and contributes to the slip.

Not to be critical at all of driving technique, but in all out time trials or any kind of "serious" driving that involves WOT, your shift will come at 6500-7000 rpm, and WOT application shouldn't be that low at 4000 rpm. Does the clutch slip if you shift and apply WOT at higher rpm than 4000? If it doesn't, IMHO no need to detune. Just provoke the clutch less :-).

Stuttgart, the mecca eh? Just how expensive is clutch replacement there - that bad?

 

It's an expensive car with presumably a decent chunk of money in upgrades and tuning. De-tuning should't even be in the cards IMO. You couldn't possibly have thought you were going to get away with 2 years of running an E85 tune on a stock clutch? Sounds like a very fun setup though.

 

Yes they did the clutch for me.

I personally didn't do the GT2 slave as it makes the pedal very solid.

 

I didn't do the slave either, no regrets so far

 

Anthony, what clutch do you have? The turbo slave has no feel for me...

 

Tilton triple carbon, I heard protomotive a triple disc is solid though for the $