I have a 99 civic hatch and I swapped a h22a in it with a gsr tranny ive been driving it for about 6 months now with no problem then out of the blue it started to make a pinging noise at 4 to 5k but only under load it doesnt do it in neutral ive triex different fuels higher octane chan
ged spark plu
gs wires and a new distributor any help would be very appreciated

 

What ecu? Running a mystery base map? Transmission noise?

 

im running a erics racing chipped ecu with a h22 base map but i figured it out the driver side motor mount broke in two places and at high rpms it would slap the frame rail its funny cause it sounded just like octang ping