The problem is just more prevalent at high loads, but it does it under light load too. Even at cruising speed at constant throttle I can hear popping.
It doesn't only happen at 1bar boost. I've turned the boost down to 0.8bar and it still hesitates/misfires. Haven't had the car on the dyno to map the A/F ratios yet.
I checked all the spark plug leads and connections and all seems OK. I guess I can just go out and get a new coil. Maybe it's a weak coil?
I have noticed now when I get out of the car, the door handles intermittently gives me a bit of a zap and that's never happened before with my car. Maybe it's a bad ground somewhere or a short?
Started the car in the dark to see if there are any spark leakages anywhere but couldn't see anything.
I don't have the tool to remove these plugs, so I can't check gaps etc. Since I'm using 993tt plugs, the gap would be 0.8. Protomotive recommend the 930 W3DPO plugs for there systems, which use a 0.6 gap. Not sure if that makes a difference because it was running fine up until a few days ago
Hoping the Crane HI-6 and LX92 will cure the problem
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Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
