[tomm.brz]

Hi,

the complete story would involve also the fact that worn engine mounts, a leaking EBCS and don t know what else, brought the engine or the exhaust to touch the frame somewhere and to have me rising the WG duty more and more every release erratically

we gotrandom corrections even outside the region of 3k rpm (the zone we got the most problems tuning with pure e85) and dropped the advance multiplier so much during a sustained 6th gear in highway that car overheated and burnt the cat

WOT in 6th gear is hard enough when not knocking, with low ignition timings was simply too much

Anyway you fixed the leaks and random corrections stopped everywhere.... BUT around 3200-3600 when WOT with 6h gear mostly and 5th gear (with other gears i never saw corrections)

Actually what worked most was to go to the opposite direction of what you do with non-ethanol fuel.... LEAN afr out under 4000rpm
Lowering timings seems not to correct it at all, it would drop advance multiiplier even with negative ignition timings with E85


The limiting of throttle i set up for you is active only on 5th and 6th gear, to ease a bit when you WOT on such gears at low rpm

the article you linked is good and the pic shows exactly the lspi zone.,. in fact we had acvance multiplier dropping basically on 6th gear under 3200 rpm, that's coehrent
It seems a leaning out with E85 in that zone in the zone of 13 AFR helps the most



where did you find that dexos2 is bad with ethanol? i ve always thought Dexos2 is a specific involved with LSPI bench test