On the Mitsubishi 3000GT the ignition system is known to be weak. When we increase boost to 14 psi we often suffer from spark blow-out. For this the gap of 0.044 is gapped down to 0.032 and even more to 0.028. This solves the blow out but idle and milage get worse. With WI the spark may need more power to ignite the new mixture in the chamber. I noticed this when I installed the ERL System 2s and had always to use 0.028 gapped platiunums. With coppers I was able to run a larger gap though. Now I use Denso Iridiums 1 range colder than usual. They are pregapped at 0.035 and I do have no problems with either spark blowout or bad idle.
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93 & 96 Mitsubishi 3000GT TT
RTEC Sport Tuning Switzerland
www.rtec.ch
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