Thought there would be more experience on this forum than on the HD group. I am running a 6# lower pulley combined with a Superchip (flip) on a new HD. I still have the larger HD upper pulley so my boost should be around 11lb. Anyway my concern is that I can hear pinging at part throttle when accelerating from say 55 to 65 mph at 1/2 throttle. Best fuel available around here is 92 octane, so 94 is not an option. The pinging stops if I flip the chip switch to the bad gas position. Problem is I have tried several brands of fuel with no success. Anyone else having this problem? Do I need a reburn on the perf side of my chip? It has been cool here (65F) so heat has not been an issue. Thanks.

Terry

 

all the chip tuners have been thru this one. you need a re-burn

 

MRBBQ I take it you are telling me there is an easy fix for this? Mike at Perf Products seems to be ducking me right now.

Terry

 

you need a re-burn to remove some timing on the perf mode. a lot of us, myself included, have had the same "tip-in" detonation, you described. it's a very easy fix for a "chip-burner". if this guy won't do it, you will have to send it to JDM or another superchip tuner, which there are quite a few of. you are safer running around with a 6lb lower and no-chip, for a while, than "any" detonation on a blown motor, especially with stock plugs.