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4 cylinder misfire

Advise
The shop that did my upgrades are struggling to find the misfire problem
Upgrades
Meth
Turbo
Stratified stage 2 pro tune
New plugs
And can’t seem to figure out the misfire
Also when hitting throttle hard EPC Comes on
Any advise!


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Crusader10143

Passed Driver's Ed
Are you still running stock coil packs? I know I've seen posts where most people have to upgrade to the A8 coils when they go stage 1+ tunes.
 
To answer your question about spark plug gap I am not sure and I also made that suggestion to the shop as well. Really appreciate your insight
Thanks
Anything else let me know


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SyDiko

Ready to race!
9 times out of 10, when these engine misfire and go into limp mode... It's a bad coil.



Are you still running stock coil packs? I know I've seen posts where most people have to upgrade to the A8 coils when they go stage 1+ tunes.


I upgraded to those coils while stock. :)
 
Well, misfires fixed and for the repair upgraded the air intake manifold and valve cleaning. Problem solved


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