Correct method Centri blower with Methanol?

[Midnite Magic]

What is the preferred method or more correct way with an Alky control kit on a 2015 C7 Corvette with a Procharger Kit? Targetting 0.86 lambda value running on E10 premium fuel. Better off pulling fuel from the Power Enrichment tables or pulling from the 6000+ Hz MAF table. The MAF method significantly lowers the g/s airflow, drops cylinder airmass and also lower torque calculations. (car is a M7). The PE method will leave the airflow values in tact, but then you commanded and actual will be off. Currently at 10 psi and 1.14 g/cyl airmass doing the MAF method.

[Ben Charles]

I've always adjusted my fueling with the maf...

I would increase the fueling a little if it was me, especially at peak cylinder pressures (peak tq)

[Midnite Magic]

I am 1.160 in the PE table above 3000 RPM, which spits out a commanded of 12.15 in my scanner. I see others recommending 12.2-12.5 and I thought I was already being conservative. The fuel is 93 octane (E10) with 100% methanol out of a single nozzle Alky kit.

[Ben Charles]

Since you using actual e10 14.1 as you set point then this afr values are fine

[Midnite Magic]

Since you using actual e10 14.1 as you set point then this afr values are fine

Okay because I always calibrate my wideband to output lambda, found it much easier this way. So my commanded is 12.15 on the AFR scale, can I safely lean this up to what a few on here have suggested or would you recommend to leave it alone?

[Ben Charles]

Leave it alone... You would either pick up very little or non at all... Especially being on meth, I would leave it due to cylinders getting equal amounts of fuel... If you lean it out that just means some cylinders are getting hotter than others most likely

[Midnite Magic]

Leave it alone... You would either pick up very little or non at all... Especially being on meth, I would leave it due to cylinders getting equal amounts of fuel... If you lean it out that just means some cylinders are getting hotter than others most likely

Any advice or point in the right direction to tune the VVE table? I already have the baro broken out of the harness and a customer PID for pressure ratio (MAP/baro). Is it as simple as failing the MAF like on the Gen III stuff? I am trying to do the VVE open loop

[Higgs Boson]

on a 15 you should be able to just fail the maf. on a 16 a failed maf won't let you get into boost.

[Midnite Magic]

on a 15 you should be able to just fail the maf. on a 16 a failed maf won't let you get into boost.

Excellent, anyone ever heard of generating GMVE from the corrected MAF to get a jump start on roughing in the VVE table?

Also looks like it is back to the drawing board. I originally had the Alky gain on 6, but I checked the turn on point and it is coming on just past atmosphere (1.0-1.5 psi) so I need to dial it up to around 4.0-4.5 psi

[Higgs Boson]

Excellent, anyone ever heard of generating GMVE from the corrected MAF to get a jump start on roughing in the VVE table?

Also looks like it is back to the drawing board. I originally had the Alky gain on 6, but I checked the turn on point and it is coming on just past atmosphere (1.0-1.5 psi) so I need to dial it up to around 4.0-4.5 psi

yes many people use the MAF to tune the GMVE, I prefer lambda error but on 16 and up it's not an option so far over 1.2 or so PR.

[NicD]

On manual cars you can do it either way but I prefer to keep the torque model correct and the MAF table correct and pull fuel out with the PE table for methanol. Yeah yeah pe doesn't match anymore since the methanol is extra fueling but it has the least impact doing it that way and things still match up so oh well. With autos I wouldn't even consider pulling it out of the MAF/VVE because of the torque model impact.

[marksstingray]

I'm no tuning guru but am still learning. I tried it both ways and got better results with PE tables and leaving maf alone. I ended up at 1.04 on the PE tables for the most part. commanding 14.13 and my AFR is 12.1 at WOT steady all the way to redline. alky setting on 6 and coming on at 4psi.

[marksstingray]

running 17 degrees of timing with 8psi boost.. Zero knock so far