I got a 88 tII, e6k haltech, ais meth kit running pure meth & running all trailing plugs.

Car has been tuned by myself this summer and has been running very good. I stopped driving it when it got colder. I decided to drive it to work today because the roads were clear and decided to hit some boost on the freeway onramp. when i hit full boost the car would pop (heard it through the wastegate). AFR's were in the 11.5-11.8 range. Car has never done this during the summer. a friend of mine has a t2 with a haltech e6k with a <NOBR style="COLOR: darkgreen; FONT-SIZE: 100%; FONT-WEIGHT: normal" id=itxt_nobr_1_0>hybrid</NOBR> turbo that started doing the same thing. To me it sounds like the cold air but i dont see how if it doesnt show it on the wideband. I also thought of my meth kit along with the cold air made my combustions temps too cold causing spark blowout? Couldn't be it if my friend that has no meth has the same problem. Has anybody has this issue?

Thing i noticed after driving it today was that it only does it under heavy load (16+ psi) and its more of a consistant cutting out sound that i can hear through the wastegate. AFR's dont change at all when this happens, this is what gets me.

 

Are you still using stock ignition?

 

Yes stock ignition. I know im due for igntion but the car ran perfect for quite a few months with the stock igniton.

 

What plugs, are they still good?

 

Well thats what i was thinking but thier only 5-6 months old. thier all 9s all around. Ill replace them just to be safe and see what it does.

 

Changed the plugs and it fixed it completely! Plugs weren't but 6months old. Must have been blowing out the spark?? Maybe the methanol eats the plugs faster? Thanks to you guys who helped out!