ENGINE BREAKING UP AND MISSING BETWEEN 5000-6000 RPM

[datapimp69]

my supercharged engine started doing this around 6 mounths after putting it in.

i still havent figured it all out yet but, i have figured out that is has something to do with the quality of gas i get.

i can only run 92+ octane now and i can tell when i get crap gas from somewhere.

i get on the highway and floor it and it starts breaking up. and throwing "random cyclinder missfires" errors. get better gass or add a octane booster and it goes right away.

[CONRAD II]

Originally Posted by datapimp69

my supercharged engine started doing this around 6 mounths after putting it in.

i still havent figured it all out yet but, i have figured out that is has something to do with the quality of gas i get.

i can only run 92+ octane now and i can tell when i get crap gas from somewhere.

i get on the highway and floor it and it starts breaking up. and throwing "random cyclinder missfires" errors. get better gass or add a octane booster and it goes right away.

Doesn't mag recommend that you use ONLY premium fuel after installing the super charger? I've had my charger on for about 6 months and have had zero problems other than workin out a couple bugs in the very beginning.

[H2 Bill]

I have had the problem a couple of times too. Once it was a burned ignition wire (actually twice) and the other was clogged injectors due to bad gas. Now I only run Chevron or Mobil. I found this out by running a couple of bottles of Techron through the tank and it cleared it right up.

[H2BRUTE]

It will be interesting to see what they find out when I take it in. My tach actually doesn't have a red line on it, but I would guess probably between 5000-6000 rpms would be it..The guy at the shop thinks it is a fuel filter since it is only doing it at high rpms. I have been using 93 octane since the s/c install, but maybe I will get some Techron and see if it helps before I take it in. Thanks again..BRUTE