cant rev past 4,000

[8112]

uploads and idles fine. no cel's or error codes. no datalogging. redlight is on with green light flickering once in a while.

tried uploading new calibrations with no luck.

thanks

[vteczone]

uploads and idles fine. no cel's or error codes. no datalogging. redlight is on with green light flickering once in a while.

tried uploading new calibrations with no luck.

thanks

i had same problem last year,tried swapping distributors & ignition sys. lastly i transfer the whole engine to a different chassis and uses that same s300...and it works fine.so i concluded that it was my ecu wiring harness. may be u could try using different wiring harness..may be thats the prob.

[ek_hatch]

we figured it out, it was bad soldering on the CN2 4 pin header

thanks

[holset hatch]

i have something similiar, but mine is much earlier at 2k rpm. where is the CN2 4 pin header and how can i check it?