Looking for some feedback on other CTT with an EVOM ECU upgrade. Was it a noticeable HP and TQ difference right away? If so how much of a difference?

Thanks guys!!

 

Huge! Transforms the truck.... especially with bypass pipes and exhaust. Sharkwerks did my install and it went great. Noticeable increase in power, although I have not personally dyno'ed mine yet.

 

I've had Evoms done on all my Cayennes, plus my past Bentleys, Lambos, other Porsches and well worth it on each one! Throttle response/HP/TQ much better and it Sport mode, bye bye!!

but do get an exhaust after as that will help.

 

hehe thanks guys!

 

That's what I've been hearing, best mod you can do!! I just don't feel it. The only thing I feel a difference in is the throttle response. I've put about 500mi on it just to see if maybe it adjusted itself or to hope for any improvement but still nothing.

This was tuned for a 04 CTT with EVO intake and catbypass. Now I'm waiting for the intakes to arrive and the catbypass is being done this Friday. Do you think that maybe the car is just running too rich due to being re-mapped for mods I haven't done yet?

Thanks for your time guys!

 

Damn love that list of rides!!

I feel the throttle response but nothing as far as HP or TQ.

When you say sport mode do you mean the PSM off?

 

Hmmm, that does not sound right... and the Cayenne ECU should be able to adapt the maps to your running conditions so it does not run rich. Is your boost at .8 bar with only a slight drop at high RPM's? If not, you may have a boost leak or the diverter valves might not be holding the increased boost. I had BOTH problems on my CTT. The factory boost pipe system uses many o-rings for sealing and several of mine were pretty worn out, especially on the drivers side where there is more oil build-up that probably contributes to wearing out the rubber o-rings. FYI

 

Yes it just barley doesn't touch the .8 bar and ever since the new EVO diverter valves the boost rebound when shifting is great!!

I guess I never really noticed (which means I was watching the road..hehe) but does it ever hit .8 bar?

Don't get me wrong here guys the car is still running great and I smile every time I get on it I just don't see any gain with the ECU tune.

So the car should adapt huh? Would it take longer than 500mi?

Thanks for all the input!!

 

+1 on that

 

Any other suggestions or thoughts out there with this?

Thanks for your time!

 

Still spinning my wheels over here guys... Or really not spinning my wheels I should say...

Quick update - EVO intake and catbypass have been installed.

Still no big difference, I had the car in the shop last week and the only thing they found was a split hose for the brake booster. I take it in on Friday to get a smoke test done but visually neither of the Porsche mechanics found anything.

One of the mechanics owns a CTT and took mine for a spin because he was thinking about doing some of the same stuff to his. Long story short he wasn't impressed at all. Except with the catbypass, he really like the deeper sound and wants to do the same to his. As far as the other thousands of dollars I've spent...well he said he would pass and if I could do it over again I would as well.

Help please, looking for any advice on what this could possiably be and as bad as this sounds I'm hoping there is something wrong with my car. But with no error codes I'm having a hard time here...

Thanks guys!

 

This definitely does not sound right... the EVO tune alone should make a noticeable difference in seat of the pants driving. I know with Alex at Sharkwerks it would be possible to reprogram the stock tuning to see the difference. Maybe your tuner could do the same? The factory boost setting is not more than .6 bar which should feel a lot slower than the EVO tune.

 

I know that's what I keep hearing!! I'm just running out of things to check.

The Porsche shop couldn't find anything wrong so they did a pressure smoke test and found two very small leaks down by the IC's. He said they were extremely small and he doesn't think it's causing the issue but he's going to fix this Friday anyway.

I've already sent the ECU in twice I really don't want to send it in again two more times. If I send it back again it will be to put the stock maps back on there and get a refund.

On the flip side I drove my buddies 04 CTT with a GIAC tune and that thing is fast as hell!! So I know I'm not crazy and that this extra HP is actually possible! His GIAC tune alone smoked my EVO tune and look at the list of mods I have done in my sig. It was funny because I was talking up all my mods and telling him what he needs to do and that I can't believe he still has stock diverter valves...blah blah blah. He said let's race...and kills me. I went home and cried.

 

still nothing..? that sucks man.. i hope you find out soon. I wanna feel this GIAC tune now

 

I must respectfully disagree with you on the stock boost level. I've seen 2 push over the .7 bar and yoojeankim (board member here) is also pushing close to .8. All three of which are stock except for one with a catbypass. And I'm pretty sure I was extremely close to the .8 with only new DV's...which was my first mod.