I have a bad misfire under load, have put new coils in, new plugs and gapped them to .020, sent injectors away to get flow tested and they came back good, compression test came back good, checked fuel regulator diaphram for leaks, it's fine, I'm running e85 and 600whp on a evo 4, any ideas would be much appreciated, thanks

 

I have heard people saying things about e85 and the content changing with colder weather, but I'm really not sure

 

I'm assuming your boost is pretty high. What are your mods and boost level?

At that level I have most of my customers run .018" gap. What AFR are you running?

 

Full boost is 31psi but it is missing on low boost as well which is 14.7psi and that makes 420whp, 2.0 litre garrett 35/40, ID2000 injectors, stock ignition

 

ID2000 a gt35 and stock coils?? Get a COP set up

 

Did you change your gasstation recently?

 

Can you post up a log when this is happening?

 

Found the problem was a cam angle sensor

 

I've got the same issue under heavy load, changed plugs and it's better but still not right. Did u get a code?

 

No I didn't but I have a aftermarket ecu and no engine light came on