Help! Car won’t stay running, rough idle, burning a lot of fuel. 16’ gt

[Larrabee]

So I have a 2016 GT that’s Paxton supercharged the stock clutch went on it and I replaced it with a McLeod, drove the car for 700 miles and now the car is running awful, dies, idles badly and stinks of fuel. I replaced the spark plugs, welded up a crack on the long tube header I found and replaced the o2 sensor on the side that the header was crack on and it still runs bad. No check engine lights. Anyone experience this?

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[18 Smoke]

Crank relearn?

 

[Larrabee]

Crank relearn?

O wow I just read up on that I hope that’s the issue thank u! Really weird that it ran just fine for a long time but others say the same thing now that I’ve read up on it. By any chance have u done one before on a sct tuner?

 

[18 Smoke]

Yeah. I believe it’s listed as Special Functions. There should be Crank Relearn and KAM reset. Good luck

 

[Larrabee]

Tried that with no luck still runs like shit then dies.

 

[armykyle1 [HACKED ACCOUNT]

Could be a bad maf

 

[jrsimon27]

Check the maf and vaccum leaks.

 

[18 Smoke]

These guys mentioning the MAF reminded me. I had a similar issue with my car on the dyno. Was fine when we pulled it up on it, then didn’t want to start and ran like shit when it did. Found the MAF fuse blown. Not sure why it blew, but I replaced it and haven’t had an issue since. Easy enough to check

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