I posted this on another forum ..
I have been tinkering with my Xede since I fubared my custom map by adding a tubular header and changing the exhaust system. I run 93 oct.
I always hear tune to 11:1 or 11.5 etc. but in my interpretation this value is at full boost (20-21psi tapering to17-18 psi). I’ve read raising EGTs by leaning out AFR improves spool up in the lower rpm range but how lean is safe? Another question that comes in mind is, what is the best AFR at peak Boost, at 5K rpm and so on?
I have made these plots from actual data logs in third gear and would like to hear comments by those with experience.
Thanks in advance for the input
