Re: Protuned? How often do you see knock? What magnitude?
15 STI, stage 2 installed by Renner in Carson, tuned by Paul at Yimy. 292 whp and 310 wtq.
It gets -1.4 FBK usually until FLK learns it. It got a -2.8 FBK the other day cause I was too lazy to downshift before I stepped hard on the gas (WOT underload) while exiting the freeway.
These turbo cars will knock if you hit the gas hard at below 3000 rpm (or before the turbo spools up) with 3th or higher gear.
It is ok to get -1.4, and occasionally -2.8 knocks. I was getting -4. plus knocks with stage 1 protuned by cobb socal. Expect more knocks during temp above 90 degree. Nothing we can do about it with 91 octane here in Socal.