Wickdwagon

I have been thinking about removing my tune and go back to stock....I do have the Weistec downpipes, has anyone ever run into issues running just the down pipes on the stock tune? The car felt smoother and more drivable in the stock configuration. Has anyone gone in this direction?

10speed

What tune do you have ? I didn’t think just tune and midpipes would effect drivability all that much , my car is all stock and seeking to go in the opposite direction lol

ajs76

Interesting. Can you elaborate on the smoothness thing? Only thing I noticed was the rougher shifting when in S+, other than that I enjoyed my tune only car much more than stock.

You should go drive someone's stock car before doing something drastic

Wickdwagon

Its really hard to explain but the it seems that over time the from a stop the car feels very binary, in that it is either off boost or full on boost. I I know that some of this is how people also describe the MCT, but in this case the power delivery from a dead stop is quite jerky. Like I said hard to explain.

Chappy

Don’t you have a custom tune?

ajs76

I felt like the car did that stock too. I described driving this car similarly to driving my old 911 Turbo with a lightweight flywheel. If you gave it too much gas without being higher in the revs it bucked around like crazy, so I've just given up accelerating quickly away from lights etc. in this car. I have to gently lean into the gas always.

Definitely find someone in a stock car to remind yourself

CarHopper

Have you tried resetting your adaptations?

C Smith

I suffered through a bad RENNtech tune for a couple months and finally threw up my hands and had them flash the car back to stock. I suffered stumbles and misfires at full throttle, and I was tired of spending my evenings diagnosing the problem with their tune.

The car car runs great stock.

Cifdig

what your describing sounds like timing, meaning when the engine is running effectively example, low IAT, turbos cooler, and the plugs tip cooling off in time , the pull will feel strong all the way , puts your head back and goes. Now when the car is hot from doing a hard pull the next time you get on it it’s less power not as much tq and not the same pull. That’s your timing retarding, something is off, either your awic in not working effectively, or your spark plugs are at the point of over heating which backs timing off from small knock/ping, or the gaps have exceeded what is mandated for tuned car. New plugs gapped down will drastically help, even those with no issue will see difference from new plugs gapped down car will pull harder longer . , and also ask if your tune keeps your awic pump on at all times that way your IAT stays more efficient. When you have time with the car running pop off middle engine cover . If you have the divorced system you will see a small water tank look at it and see if the water is flowing. If you don’t have a divorced system maybe that’s why your not running efficient as well.

Wickdwagon

I do have a custom tune and it was done by a tuner that many on here know and trust greatly, I do not think that it has anything to do with the actual tune itself. And yes, the car has new plugs and were gapped for the tune so I am not thinking that this is actually a mechanical issue at all....the idea of doing a new set of adaptations is very interesting as the car is about to go in for its 30k service which also has a MCT service if I am remembering correctly. And pardon the lack of search, but does some one have the throttle adaptation, and the MCT adaptation procedure handy? I frequently log my data on the car and everything seems to be the same it ever was from when the car was delivered post tune and exhaust.

Silverp30wagon

Where are you located? I had problems with my EuroCharged tune with driveability but with the tune I have now (custom) it feels just like stock but stronger. The EC tune had major lag at low speed when on and off the throttle.

Cifdig

igntion on but car not running, press gas pedal down for 6 seconds shut ignition off then release gas pedal do nothing but sit for 3 minutes then start car. It definitely works. Removed what the tranny learned and starts fresg

kponti

I have the same thing, its like a really bad bad turbo lag below 2500rpm in comfort mode. I did not associate it with a tune but come to think of it....I do not remember having it a year or so ago when I still had the Renntech tune. Now I could be wrong about that since the Renntech tune had other issues so I may have not paid as much attention.
It only happens in Comfort mode. There is a particular spot on my commute to the office that I always HAVE to remember to switch to Sport mode. Its a small side road that goes across a 4 lane road. I am on the side road and usually the car finally starts pulling when my front bumper is completely passed the 4 lane. By then I do not need the power. It was kinda comical cos I would get wheelspin right after I completely cross the intersection.

kponti

When did you get this tune?

Luke-BITURBO

You will have a cel if you remove the tune

Silverp30wagon

Local guy in So Cal but he will do mail in tunes too if needed. Where are you located?

I reset my tranny using the steps above and the car is crazy to drive now. It used to pull away from lights pretty hard but would never wheel spin. Now I can spin off the line..... At 45-50mph just about anywhere. Thing is even better than before. And I didn't think that was possible. Haha

Cifdig

👍🏽

kponti

Oh I was under the impression that you got an updated tune from eurocharged.

10speed

Its like you gave yourself a quick tcu tune!Can I try this procedure on a stock car ? Will they ever have a real tcu tune for this car ☹️??

kponti

Definitely not

scarzie

Can you explain? On all my previous turbocharged cars the removal/gutting of cats always resulted in a CEL.

If true, on a stock e63s we'd be able to get some serious sound (and some power) increase from doing so without worrying about CELs and without a tune.

Personally I am currently content for the time being on stock power but need more noise in my life, and would prefer not dropping cash on exhausts that sound basically the same as stock. This would be awesome if true.

PeterUbers

want more noise? Open the rear seat pass through or drop the folding rear seats

Luke-BITURBO

if you remove the cats and don't tune for it you definetly will

kponti

You are right, I forgot he had downpipes.

OP can also use spacers like another member here is doing. Seems to work for him

ajs76

So if a lot of the problem is comfort mode, maybe it's because the car is starting in 2nd gear from a stop? Mine doesn't start in 1st unless I'm in sport mode. I had the same problem on my 335i and it drove me NUTS. It made takeoffs way more jerky and probably just made worse because it's tuned. Just a thought.