Thread: Tuning for Blow Thru MAF

Im already set up draw through, but I've been having trouble with my idle for a while but I thought the crack in my maf wouldn't be a problem. Im only drawing 5 in. Hg vac @ idle. So I guess ill try and swap the sensors from my cobra maf tomorrow, thanks for the input

lol ^^

you have other issues then, anything pre throttle body wont effect your vac

Got that from VPM you put it on the intercooler pipe then place the lightning maf in it. Might work for the Cobra too.

Screw MAF's altogether. Patiently waiting for TunerCode MAP support this fall .

I'm gonna try blow through on my Z32 maf, just to see how it does, most likely wont keep it that way though.

uhhhhhh well u can use map sensors right now, its just the documentation they are working on..

While it does work right now, it won't be publicly available until later this fall.

I highly suggest the billet maf housing turbotank has for sale in the forced induction section....I tried everything to seal my maf, the only thing that worked for more than one pull was jb weld and that would lift and crack after a few pulls. After switching over to the billet housing there are no leaks at all, and I had to change my tune. Now the car idles and runs so much better all around. Anyone running blow-through needs the billet housing or you will have a leak at the maf.

What Dave meant is, he is done with the programing just needs to document it now. Doesn't mean it's publicly accessible.

I'm running the stock usdm de engine and maf with a rom tune using the det timing and fuel maps pasted into the de .bin file. Also running the 370s to match, and a blow through maf.

I used to have a rough idle sometimes and the car has never idled when cold. Once it was warm it idled fine so I never bothered to try cleaning the iac (its tight as hell to get to in there). However lately it seems to be idling worse. Straight stalls when i clutch now and then after cruising for awhile. I.e. coming off the highway or a sudden stop. I get idle surges alot. It'll be sitting around 800 then drop to 500, stutter, then come back up to 800 and it'll do this a few times.

Also wanted to say I'm sitting right around 11:1 afr with the maf blow through at 10psi on a td05h-14b (dsm turbo. Had it in my basement so free > sourcing a sr t25) and my maf is seeing 85% flow via my safc. Not sure how accurate that 85% is, but i kinda feel 10psi on a 14b should be a little more airflow then 10psi on the smaller sr t25, which usually puts out around 240-250whp with cams...and I do believe the maf maxes out around 250whp. Going to guess that because my maf is blow through it reads a little low, hence the 85% at 10psi, and because it reads a little low I'm running a little lean, hence the 11:1 where I was kind of expecting around 10:1 seeing as its basically a stock det tune. My slightly lean condition could also be because of my upped boost level.

What Dave meant is, he is done with the programing just needs to document it now. Doesn't mean it's publicly accessible.[/QUOTE]

Ahhh Maaannn! I've been waiting all summer......
now all of fall?