victor25

Eric
Yes the pin out on the diagnostic plug would be great. My car is a 90 S2, so I hope it's the same. It looks like you connected to a square block plug and mine looks to have a round diagnostic connector.

I have tuned the fuel somewhat, and taken a little off the ignition to be safe, but not driving it much or done a full tune until I get the knock counter set up. But, from what little I driven it, it runs great!! I will post some pics soon.

victor25

FOUND IT!!
bottom of post # 1 Thanks Eric

Eric_Oz_S2

I think I took about 5 degrees of timing out at the top.

How much boost do you get at peak rpm?

I would live to see some pics.

Cheers

victor25

Running what I consider the stage 1 with the 100mm pulley, no intercooler and AFM located up front where the air filter was. The stage 2 will be with a MAF, intercooler, and 80mm.

victor25

Here it is, nothing crazy, but a very simple, safe, setup utilizing the stock injectors. gained about 75 hp with 4psi and completely stock otherwise

victor25

Eric.... Look... AFM out, and MAF in
I'm now Unofficially stage 2, over 10psi boost, with intercooler, Ford style Hitachi MAF and 36lb injectors. She is very very fast and runs OOOHHH so smooth!! Still running stock DME, literally no other mods to make her work. Just the the MAF, a temp sensor, and some tuning.

Eric_Oz_S2

Looks good! 10 psi is a lot of boost. I presume you had to pull a lot of timing at that level.

Did you reprogram the dme code for the maf or just adjust the maps to get the afr's right?

victor25

Just adjusted the dme maps to to get the fueling correct. The trick was to using the correct size MAF housing to get the numbers to closely match the AFM numbers. Started with a 3 housing I purchased, but the numbers were too low. So I dropped down a 2.5 id that I built with my 3D printer

Yes I had to pull out some timing, but not as much as I had anticipated. It not very warm here now though, fall is upon us.

Eric_Oz_S2

It's also interesting how you run the maf after the supercharger. I would have thought that might result in problems with flow reversal and lead to some jerkiness on and off throttle transitions. I would also think you would run out of fuel with the turbo 36 lb injectors at 10 psi.

victor25

The injectors will probably be maxed out. I have only taken it up to about 5000 rpm since installing the maf and intercooler. Tomorrow is Saturday of course, so I will get to log some good miles, and will know more from that testing.
I chose that maf location, as I believe it gives the best fueling. Being after the intercooler gives more accurate incoming air temps and quicker response. The problem with that locations is that I cannot vent the crankcase into the intake track to be burned, or I risk getting oil on the maf. I will probably also try it between the air filter and supercharger to see how it performs.

REDGT3RS

Looks great and I agree 10psi is a lot of boost
Couple of questions, is your motor all stock? And what do estimate HP at now at 10 psi, looking forward to seeing another dyno pull sheet. Car has to be very fast and man a TON of fun.
Thank you both for the build info great fun to follow and learn.
Vic, we're not to far from each other, Nw Burbs of Chicago.

EliteThink

Great thread, thanks!

mattipuh

Good read, thanks for the writeup!

Eric_Oz_S2

Thanks. Still going strong! Haven't done the Maf yet, still hoping rogue will do this, but might have to go alone on this after all.

Mikes3.0cabturbo

careful on the 10psi, I was running around that when I boosted my stock engine, I'd guess you have a very old original headgasket in there and it will let go.....but then thats an excuse to tear into it and go for it