Need help 2014 silverado with turbo,cam,meth its been sputtering at wot checked all my plugs and wires seems they are ok plugs are gapped at .040, after a pull my check engine light starts flashing for about 3 minutes wideband reads 11.0-11.6 wot 25-90mph pull sometimes it drops to 10.7-10.90, after 90mph it jumps to 12.0-12.6 and then really runs like **** any help will be appreciated

 

Think it could be too much meth? Is it meth/water?

 

It's misfiring. Tighten the plugs to 0.028 and make absolutely sure the wires aren't touching a header pipe.

 

Meth doesn't like large plug gaps.

 

Im closing the gap to .032 se if that fixes the problem, wires have heat sleeves on them

 

I would go ahead and go to 0.028, youll end up there anyway.

Even if they have sleeves, make sure they are not touching. I burned wires through double wrapped exhaust and double sleeved wires, it can happen.

 

make sure you dont have any exhaust leaks up stream of the o2/wideband sensors too

 

Are you on the factory fuel pump? I would look there next after regapling the plugs like mentioned above

 

Yeah still has factory fuel system, hopefully its just the plugs

 

No exhaust leaks bro everything is good