I am running the NOS 5177 kit with the FPSS and a MSD window switch, WOT switch. I removed the MAF screen, installed TR6s gapped at 38-40 and have 93 octane in the car....i am pinging still at WOT at about 5k rpms. Do you think removing the FPSS would remedy this problem? I have read where some have, or that some have adjusted it. My friend thinks its either bad gas or to much timing, BUT doesnt the PCM read the MAF and retard the timing and add fuel accordingly to make up for the extra air.... I finally got the fan spray nozzles in last night and had the bottle pressure up to about 1150-1175 and ran it one time and it hit so hard in 1st it broke loose at 3500 rpms which i must say was AWESOME!! But then at 5k rpms in 2nd gear ping ping ping BLEEPIGN PING!!! We all three got bad gas this past weekend from a local gas station, caused my buddys car to die completely...do you think that could be it, i have ran a whole tank of "good" gas through it already. Do you guys think there could be some remnants of the "bad" gas left in the fuel lines??? Help me out guys, i am about to just rip the damn kit off and sell it.

 

if your pinging, then lessen your shot or retard timming.