Posted this in the alky section but havent gotten much response. See if anyone here has some advice.

Well I am running a M15 nozzle with straight meth along with stock injectors. Tuning it with ECUflash and using a Zeitronix and Evoscan for logging. Peaking at 29psi in 4th gear then tapering to redline.

Basically Im just wondering how much fuel you guys with similar setups are having to take out? I started with the af/r around 10.3-10 right after the meth install!! Right now I have the af/r at 11.1-10.8 but it seems like Ive taken a TON of fuel out to get it there. My AF/R map in ECUflash is really really red. Alot of the cells from 6000rpm up and 180-240load are over an indicated 12.5-13AF/R. So are your maps that lean? I know meth makes you have to take fuel out but I didnt think it was that much.

 

normal...


Thats why you go kaboom when ur kit takes a nap lol

 

the cells of the maps that indicate 12.5-13AF/R when you are logging it with the wideband what says? thats the important thing if says same thing men you are too lean!

 

Would you mind posting up your fuel map. Mine is also lean looking running similar mods as yours. I am curious to compare.

 

My wideband never goes leaner then 11.1 through those ranges.

I will try and get a map up here soon. Its on another computer that I normally dont have hooked up to the computer. Or if its easy for you to post yours I can tell you how mine is different.

 

I guess this pertains to stock injectors only, anyhow IPW peaks at about 18.8 and AFR stays around 12.2 to redline. This is with 675ml/min nozzle and about 60% MeOH/H2O.

Yes, this is very lean but the timing's easy

Fuel map:

13.8 at 3500 rpm/100% load
11.4 at 4000 rpm/300% load
11.7 at 7000 rpm/260% load

 

that its the important thing what the wideband says. so u are good