HELP!! MISFIRE AFTER COBRA JET INSTALL

[corey3299]

I have a 2016 mustang gt with catless h pipe & roush mufflers. Car ran absolutely great (to be stock) until I did my Cobra Jet manifold, vmp 65mm twin throttle body, JLT cold air intake, except clutch & flywheel. Now I’m getting misfire codes in cylinder 4 & 7. I have already checked plugs, coils, & injectors. Could it be the tune? The tuner literally took all day, used 3 different companies (sct, hp, & another) finally got it tuned on hp. Car runs amazing until I get the misfire code. Then I can clear codes & I’m back to running great within 10-15 seconds. Please help..

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[corey3299]

Excedy clutch *

 

[Micks5.0]

Did you ever fix this problem? I'm having the same issue

 

[Airborne5.0]

Really interested to hear what happened as I was looking at doing a CJ install.

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