anyone have trouble with this? im using -35 washer fluid right now( about 40% meth) just had fuel taken out of the tune and its reading richer at WOT than before. its an aem gauge maybe 1500 miles on the sensor.

 

It needs to run richer because the stoich for meth is much lower. When you begin burning meth in place of gasoline, the mixture should be richened proportionally.

 

^^ i do know about meth having a different stoich than gas but my afr gauge is showing 10:1 when i go WOT when i just had fuel taken out of the tune to compensate for the meth. i was driving around for a few weeks getting it set up before i got any adjustments made in the tune, it seemed to be ok but i did notice a few times it would go lean when i was WOT with meth spraying.

 

What brand meth kit are you running?

 

alky control, m15 nozzle

 

So lets get this straight, before you took fuel out in the tune, it would sometimes go lean at WOT with meth spraying... And now with fuel pulled out, it goes 10s rich?

 

yes..it was only one or two times that it jumped from mid 10's to 12.5 at WOT before getting the re-tune. this was running no additional boost or timing, just getting things set up and testing. before the afr's were always in the 11-11.5 range with no meth. i did the "test" there is for aem gauges that i found on youtube, it passed but i don't know if that means anything.

 

Don't AEM widebands have a self-calibrating feature? It might not be calibrated correctly... The symptoms you're talking about are completely opposite of what you'd expect when using meth lol.

 

yea they do. i dug out my instructions for it to see if theres anything i can re-calibrate but can't. i just ordered one of those new innovate mtx ones, guess i'll see how that goes, i've been wanting a different one for awhile and now i have an my excuse to get a new one

 

Turbo or SC?