Just a quicky. Having a slight problem (altho its a lot better now) with what appears to be the spark blowing out at high-ish boost levels.
Dizzy and rotor are brand new stock GM items and I have replaced the leads with Bosch Premium Plus (new leads just out) so these should all be fine.... looks like the plugs
Have tried the Bosch Phase III plugs and its still the same. I have shrunk the gap a bit and will try them again tho later.
Until then, can anyone recommend plugs that will cope with 20+psi of boost without blowing out and also the rough prices ??