Custom Computer Tuning

[grandprixgtp_91]

well the only thing that is different from a 60 degree is the firing order, is there a way to change that or will the crank sensor figure that out? and the 3.3L has a maf sensor, and no egr valve, and the engine is dis, the motor has alot of power though, it hauls ass and even more so with a 5 speed in it, but i got no speedo now and it keeps stalling out. thanks for the help, any more info is greatly appreicated! thanks

Jake

[ryan.hess]

firing order is taken care of with the ignition module. You will lose MAF functionality. disabling EGR is not a problem.

[grandprixgtp_91]

well i dont know if it makes a differnece or not, but if i disconnect the maf sensor then the car barely runs and it back fires like crazy, if theres no line for the maf then technically it should still run fine, could i just transfer over the spark and fuel curve onto the new chip? or is it more complicated than that? thanks

Jake

[grandprixgtp_91]

actually now that i think abut it i dont even think that the car has a map sensor. how will this work? couldnt i add something to make the maf sensor work?

Jake

[ryan.hess]

You'd have to use a vacuum port and get one then... None of our v6's use a MAF... I dont think?

[1988GTU]

For What It's Worth:
The Old 2.8MPFI Beretta Used The MAF (1987-198 .
I Think It's A Five Wire Plug Harness. It Can Easily Be Converted Over To The IAT (Speed Density Upgrade) .

Also Certain 3100SFI Beretta's Ended Up With A MAF ( EDIT: 1996 ONLY )

[bszopi]

94 Beretta 3100 doesn't have a MAF. I don't think the 95s do either. Pretty sure the MAF didn't come back into the picture until they went to OBD-2.

[grandprixgtp_91]

ok, i used the bfuz code and the car started but i instantly got a ses light and it ran really rough and huffed out alot of black smoke, so i imported the spark curve and everything from my stock chip and it ran a little better but still very rough. i think its because its not utilizing the the maf sensor , its trying to use a map sensor that doesnt exist.

Jake

[grandprixgtp_91]

is there a way i can modify a def. file?

[ryan.hess]

its trying to use a map sensor that doesnt exist.

That's important to have.

But now you know that it works, and what you have to do....

[grandprixgtp_91]

ok where is a good website to download bin files, i found a place that says a gm prom BDHS , id 8184, scan id 6234, eeprom 16188183 , ecm 01228706, engine 3.3L , it says its for a manual transmission, now this engine was never offered with a manual, but im willing to try this bin file. thanks

Jake

[ryan.hess]

You can try here:

http://www.moates.net/fileman/

There's another one, but with far less binaries... I can't find it.

[grandprixgtp_91]

no , they dont have it, thanks anyways, i guess im just gonna have to screw with this thing, now the BFUZ chip, do i use the A1 def file? thats what ive been doing. thanks

Jake

[ryan.hess]

that's correct

[Timothy]

I just wanted to throw this out there for grand prix gtp 91.Believe it or not GM took a beretta stuffed a 3.3L in it then get this "twin turbos pushing this thing to 375hp.It was never mass produced but just a proto type I thought that was kind of cool.