Forgive my ignorance but I have a quick question. After my stock bottom end blew (destroyed #1 ring land--after a well known tuner who tuned it disabled my knock sensor) I finally have the engine back in the car. It was bored .20 over and cr was increased to 9.0:1. Problem I'm having is that I noticed when I start it up, it idles arouind 15.5-16.2ish afr. Before the rebuild it was fine at 14.7... Is it more lean now because of the slightly increased displacement and upped cr? I thought maybe the ecu would have compensated for that? Does this mean I need a completely new tune? Thanks again for reading my idiotic questions.

Cheers, John.

 

You want to run the same tune that blew your motor?

 

Disregard, I'm a retard, my egr valve wasn't connected to its hose. Would still like to hear opinions on a re-tune though. Can anyone tell me how to "re-enable" my knock sensor? I'm guessing all it would take is to change some numbers in the knock sensor table? Again, forgive my ignorance.

 

download a stock ROM for your car and copy over the knock sensor settings. thats a start, but if the car is built, exhaust, etc then the sensor might need adjusting so that it filters out more noise that the motor is now making.

cheers

 

Thanks, that was the road I was thinking of going down. Car has AMSs older 30r kit and ALL supporting mods...