Thanks Aaron for your instructions on how to redo the major grounds including the ECU ground.
Reground everything, even though there was no visible corrosion, and I no longer have the 3800 rpm power lag. Runs perfect. Thanks again.
Hey Aaron I've looked all over and called a dozen rotary shops with a 50/50 answer. I'm doing a 6 port turbo Can I run the s5 na ecu with a safc? All stock turbo parts @ stock boost. Any help is very appreciated thank you.