991.2 T with Cobb Tune issues

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Oct 22, 2019 | 08:08 AM

#16

PTS-BRG

Three Wheelin'

Joined: Feb 2018

Posts: 1,784

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From: Greenwich, CT

I agree returning it to stock would not resolve a mechanical issue.
I am disagreeing that the issue is mechanical and I attribute the issue directly to the tune.

Return the car to the stock map and then upload a different new map. Your problem should be resolved.

Oct 22, 2019 | 10:46 AM

#17

fsmich

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Joined: Jul 2018

Posts: 406

Likes: 184

From: socal

I had the left 2" inch boost hose blow off the turbo a couple weeks ago, boost went to zero but car ran fine at a very reduced power and no dash warning lights. Check the hose clamps. Bumper is going to have to come off to check vacuum lines/boost leaks further downstream.

Oct 22, 2019 | 10:53 AM

#18

PTS-BRG

Three Wheelin'

Joined: Feb 2018

Posts: 1,784

Likes: 642

From: Greenwich, CT

Car is running strong at top end so it cannot be a hose blow off IMO. It is the tune.

Nov 1, 2019 | 11:24 PM

#19

damien996

Advanced

Joined: Oct 2010

Posts: 58

Likes: 22

From: Gainesville, VA

Hopefully this isn’t anything major. Please keep us posted and let us know if you determined and fixed the issue, best of luck.

Nov 1, 2019 | 11:46 PM

#20

Bob Z.

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Joined: Jul 2001

Posts: 13,912

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From: Marineland FL

Quote:

Originally Posted by Grantsfo

This is basic tune from cobb. Have had SW muffler since tune - don't think it has anything to do with muffler. Honestly I don't know that SW muffler increases flow that much more than stock sport muffler. Its just a lot lighter and sounds better to me. Couple weeks ago first sign of this issue with car feeling like it was in limp mode. Seems like there must be a sensor somewhere giving wrong signal to ECU or potentially a boost leak. Feels more tune and ECU related than mechanical leak but will see.

Well? Have you had time to do anything?