simple obd II computer for 3500?

[americasfuture2k]

what computer, from what car, what year would be best to use with the 3500 to install in a fiero (or any car really)

im wanting something that will work without having to have some of that passkey crap or anything else that needs to exist from a donor car to allow the engine to start.

i was thinking a early obd ii computer from a 3400 to begin with tuning on my car.

[Superdave]

i'm pretty sure all OBD2 has that junk to deal with. I'd suggest staying with OBD1. It's easy to tune and alot less complicated than OBD2.

[americasfuture2k]

hmm, crap. thanks dave

[IsaacHayes]

96 L body OBDII does not have a BCM, passkey or other bullshit. If you are wanting OBDII it's pretty simple as that. but you still need external crank trigger.

[americasfuture2k]

ive already got the TCEmotorsports.com external crank trigger.

[CNCguy]

To use OBD-II, you will need to run the 3100/3400 dampner with a 24X trigger in it and a cam sensor.

[ForcedFirebird]

To use OBD-II, you will need to run the 3100/3400 dampner with a 24X trigger in it and a cam sensor.

It was my understanding that you can use OBDII without the cam sensor, the PCM would just revert to batch fire?

[CNCguy]

It was my understanding that you can use OBDII without the cam sensor, the PCM would just revert to batch fire?

Perhaps but I thought it would throw a code. Also, is there an OBD-II system that doesn't require a MAF? From what I have seen they all use one and that would be an additional expense and wiring. If there is one that doesn't require a MAF, I would like to know because I have been looking for one to use on a Multiple Throttle Body setup.

[ForcedFirebird]

Perhaps but I thought it would throw a code. Also, is there an OBD-II system that doesn't require a MAF? From what I have seen they all use one and that would be an additional expense and wiring. If there is one that doesn't require a MAF, I would like to know because I have been looking for one to use on a Multiple Throttle Body setup.

Yes, in the stock configuration, it will throw a code. I haven't gotten into any OBDII tuning to state matter-of-factly weather or not the code could be tuned for. There are guys who have dropped the MAF when it was maxed and used the OBDII to tune speed-density only in high-HP and turbo applications, so I lean to say, yes, it can be tuned with no MAF.

With your induvidual TB's, are you having a common vacuum source for the MAP? If so, is there really a reason you would like to use the OBDII? It appears to me that the OBD1 is easier and cheaper to work with.

[IsaacHayes]

Yes the minus one has a 4T60-E. Unless he went to the A body setup which is OBDI but then again it uses a MAF only and no MAP so that won't help either! LOL

[ForcedFirebird]

You could look up alpha-N tuning. It used only throttle position and load (ie MAP) and ignored the MAF once it was maxed from his turbo. I would ned to verify, but I know a guy with a 3800 Fbody mentioned using it on his OBDII.

EDIT: IT looks like if you have HP tuners, it will cost you a vehicle credit to do the MAF-less conversion...

1 bar Speed Density Enhanced

Applications: 1999+ Gen3 V8 (Most Operating Systems)
Cost: 1 Credit per Vehicle

This enhancement is designed to aid in tuning vehicles operating in speed density mode (MAF-less). It includes a re-enabling of the dual spark table operation and also a TPS/RPM referenced VE table modifier feature designed in co-operation with some of the worlds leading LS1 speed density tuners. This new table is designed to assist in tuning of very large camshafts and intake designs that lose a lot of MAP resolution and/or have very narrow MAP dynamic range during idle and cruise transitions. It allows for traditional SD tuning methods, Alpha-N (TPS vs. RPM) methods or a mix of both to achieve the optimum tuning result. Another feature of the Speed Density Enhanced option is the lesser resolution secondary VE table is not used when in speed density mode.

[CNCguy]

Currently the MinusOne is running a 16149396 but I am looking for other options and for future projects. The HP Tuner option may work for me in the future though. Need to see if it's an option for V6 ECMs.

[ForcedFirebird]

Currently the MinusOne is running a 16149396 but I am looking for other options and for future projects. The HP Tuner option may work for me in the future though. Need to see if it's an option for V6 ECMs.

Absolutely it runs the V6 engines

http://www.highperformanceoutlet.com/servlet/the-1657/Chevy,-Chevrolet,-HP-Tuners,/Detail

[sprucegagt]

what computer, from what car, what year would be best to use with the 3500 to install in a fiero (or any car really)

im wanting something that will work without having to have some of that passkey crap or anything else that needs to exist from a donor car to allow the engine to start.

i was thinking a early obd ii computer from a 3400 to begin with tuning on my car.

I think all of the OBDII 60* applications use passkey. Now I'm not sure about the 96 - 98 N Body or the 97 Venture van. It may not have it. But as others have said, you will still need a MAF, 24X sensor, cam sensor (or not if you don't want SFI), heated O2, etc..

[IsaacHayes]

96 beretta/corsica and 97 Venture Van did not have passkey.