MX-3.com

i'm not sure how to set this up. anyone running this combo?

What do u need to know? what kind of problem u have with your setup?

ya, I have a turbo'd BP with a NA ECU, RX7 B code MAF, and SAFC II running off of 460cc injectors and a MAP Sensor instead of the 4 wrie TPS. what do you want to know? What porblems do you have? Boost lvl?

no problems.. yet!! (knock on wood) i just wanna know how to set it all up.. i've got the stock gtx injectors and a 3 wire tps from a EGT running on a 92 RS harness.. i wanna know if tuning the MAF is necessary and what the set the SAFC settings at.

bugs care to explain the map replacing the tps?
Im interested.

lol, It came up on clubprotege.com awhile ago. You just use like a 2 bar map sensor for the Throttle %. You wire the Output into the SAFC II harness for throttle % because the MX-3/Protege/Escort 3 wire TPS is either 0% or 100%.

And What Boost lvls are you running man??? And no with the SAFC you don't need to mess with the maf. The maf is a global setting, I have mine a little rich then used the SAFC II to set back all the injector settings so I have good AF ratios.

i'm lookin to run like 8-10 lbs. i'm not really sure what i wanna do tho.. i just got my I/C lines hooked up, but im still running the exhaust right out the cast piece. i have a CS downpipe on back order but it wont be here for about a month. what was your solution for exhaust?

I had a custom DP made for me along with a 2.5" exhaust. But give me a day to find my old settings that I had when I had the 370cc injectors.

Do you have any way to tune? EGT? Widebande O2? Narrowband O2?

im gonna try to tune it with a smog machine sniffer, a four gas analyser. how much did it cost you to get that dp made? its hard to find someone to make the four bolt flange for me.

I had a gasket so I took it to the local Laser Cutting place and had them make me one. The exhaust shop then made me an exhaust and half the IC piping for $450. It was a great deal.

My fuel settings from memory:

RPM low fuel high fuel

1k -32% -%15
2k -33% -%14
3k -33% -%13
3.5k -32% -%12
4k -33% -%13
5k -34% -%13
6k -35% -%14
7k -36% -%15

Couldn't find the ones from when I have 370ccs. prolly give each percent a +6 incrament and tune from there (SO -15 on mine would be -9 on yours). This is a map for 460cc injectors with a hybrid turbo .

awesome.. thanks alot.. i'm gonna see about gettin my exhaust hooked up. before i do serious tuning but this'll definately give me a head start.

ahh.. researching does help. still awaiting my exhaust to come together but, this is for anyone who may come across this situation too.
http://www.clubprotege.com/forum/showth ... light=safc

so any generic 2bar map sensor will do? and where can i splice a 5v power source from?

Both me and one of the guys off of there spliced it in at the VAF. Do not splice it in at the TPS. It is only 5V when you aren't at WOT. But if I remembered right the VAF was the only place I could find a 5V source that was easy to get to.

And what color was the wire to the vaf?
Im doing this conversion tomarrow.
I think a higher power wanted me to do this cnversion. The 2 bolts Randomly snapped off in the throttle body for the tps.
15 lbs is fun but not at part throttle when the engine f---ing missfires because its running rich.

Oh and btw for a future reference.
Gp sorensen part number for a map sensor for a turbo buick (the 3.8 v6 which i believe is a 2 bar)
Is 779-11502. and there like 33$.

Bugs happen to know of a cheap 3 bar map sensor?