Not sure if this is the correct thread to add onto ... but ... I will anyway.
Was doing some more EFI tuning tonight after I made some VANOS changes:
Exhaust Cam RPM Limit - 4700 now 5000
Exhaust Cam TPS Limit - 30 now 33
I did some data logging
see graph here. The highlighted bubble covers the new exhaust cam switchover. As you can see at the 5000 rpm switchover point the AFR takes a nose dive into the 10.8 range then recovers back to 12.3 and works down to 11.1 (3rd gear followed by shift into 4th gear).
Boost drops as expected. EGT is good. But I'm thinking I need to adjust the Fuel Injection map over AFR's dip - or do I? Maybe this is normal for VVT? Any hints or suggestions are welcome.
On final note, since I'll be at the track this weekend I figure I need a race map (running 100 octane). I set
RPM Cutoff limit to 10,100 and the
Throttle Cutoff Limit to 100 -- assuming this allows fuel to flow and cool the pistons during deceleration. It did provide some massively impressive flames -- I thought the car was on fire at first the flame glow at night was that big. It does indeed drop EGT temps very rapidly.
Rob.