addi Posted May 18, 2004 Share Posted May 18, 2004 i am experiencing loud popping from my exhaust on full boost now as i have decatted my 94 j spec running 1.1 boost .. is this detremental to the car ? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 18, 2004 Share Posted May 18, 2004 Sounds like the plugs are breaking down under the increased combustion pressures the raised boost produces. What plugs are in it? I recommend and supply a race type NGK plug that usually fixes this and runs a good deal cooler than the stock plug at elevated boost levels too, reducing the chance of detonation, which is fatal. Backfiring through the turbine wheels of the 2 turbos is BAD NEWS and a sure way to break them or reduce their life expectancy, it needs fixing *now*. Quote Link to comment Share on other sites More sharing options...
addi Posted May 19, 2004 Author Share Posted May 19, 2004 the plugs were recently changed to twin core platinum plugs .. is this a bad choice ? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 19, 2004 Share Posted May 19, 2004 Originally posted by addi the plugs were recently changed to twin core platinum plugs .. is this a bad choice ? I'd have expected the de cat job to have included the fitment of a colder grade plug, or at least the advice to do this mod. Quite what a "twin core" platinum plug is, I don't know. Quote Link to comment Share on other sites More sharing options...
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