Originally Posted by
blackpepper
yes get a wideband had to set my regulator at 67psi to get a 11.5 afr across the board,plus far as boost lowest i see is mid 19s hot weather now its cooler dam near 21 well 20.7 and 20.8 .I have a Eurocharged tune as well amd funny thing is with my 65pulley i was seeing 22degrees of timimg with the 62 is see24 to 25 degrees i thought more boost less timing plus i got a icetank to control intake temps
24-25° @ 21? This would be too much for me.
I was running stacked before with my first SLK32 (166/65) with a box tune from Germany, custom manis and exhaust. I had to rise fuel pressure up to 5.1 bar aprx 74 psi not to lean out on the german autobahn. In fith gear from 5000 up the AFRs still towards lean (13). I was safe with better fuel (102 octane) but i didn`t want to raise the fuel pressure more.
I am not a big fan of manual fuel pressure regulators anymore. Watch your fuel trims. The ECU is trying to adapt back to lean conditions the longer you drive the car. I was suprised to realize this when i checked AFRīs after 3 months-->back to lean.
Steven
Berlin Germany.