fuel running out at high RPMs b/c of stock fuel lines

[USMC302]

Def need the MSD to fix the spark problem first as you said.. I haven't upgraded my fuel lines yet but I've run a 150 shot on my 331 with the stock lines and rails, 255 pump and 30lb squirters with no problems running into the 10 second zone. I have a PMS with A/F meter and never ran lean..Does your Diablo chip remove the rev limiter? I agree your running lean at the end of the RPM range, but I don't think it's the lines or rails. I know your 42lbers aren't over there max % either, I think it's something else. Can your tuner program the chip to add fuel after 5000 RPM's?