You dont have to reprogram the ecu, but you could to get more out of it. Def. get a tranny cooler it will prolong your tranny life, and it wont be hard to install.

 

so are the 95 and up cars an obd2?
Jason

 

Someone told me the 95 up are obd2 and them some say they are obd1. I have had a shop around here tell me it's obd2 then a guy with autotap tried to use it on my car and it wouldn't work and he said my car is obd1. I have also heard that if you have a vented opti then it's obd2 i have the vented opti. I have no idea...is there anyway to tell

 

My new 3000 stall is going in this weekend...

 

I know that all 94 had an unvented opti...
I think all 95+ had a vented opti...

I know 94 is all ODBI...
I know 95 started with ODBI, so some have it, and then the late 1995 models got the ODBII just like the 96+ fbodies...

Hope that answers your questions...

 

Tranny cooler is a definate must. No more than an hour to install. My 95' Z is an OBD1 and I had to get no programming for a 3000rpm stall. I cut 2.0-2.2 60ft's before the gears and stall with just a cutout and a CAI and had a best of 13.7 on street tires. Now I know the car is a hell of a lot faster but I haven't been to the track yet. I also have since purchased some brand new nittos for the upcoming spring and summer which will be a big help. I was using my buddies old and pretty worn out nitto's last fall and they still hooked better than street tires. I could put em up in smoke whenever I wanted though. That was with my stock 2:73's and just the stall and trans go. Since the addition of gears, I've since went back to street tires and I can't get traction for crap unless I'm easy outta the hole(easier than I would be with nitto's). It still is a night and day difference from before the installs. I have Jet Hot LT's going in this winter sometime and I'm hopping to dip into the 12's with good traction. A seperate example with my car: When I race my buddies 95' Drop Top 5.0 5spd. I usually didn't start pulling hard until 45-50 or so, then I'd walk pretty good. Now I just scream outta the hole and keep on pulling til he dissapears. He's since added a Cat Back and Off Road Pipe 2, didn't make a difference at all. Let's just say he's not very happy. I have no more hp than I had before and now I'm beating on him twice as hard lol.

 

Can you tell the difference in a 3200 and a 3500? They seem close to me--wonder if there is much diff.

I have a 94 so i am going to need to program mine when i do it? going 3200 or 3500 prob.

 

If you have two cats you have OBDII and if you have one cat then you have OBDI. That's an easy way to tell which one you have.

 

I'm sure you could tell the difference if you had a good quality converter. But that's about the difference between launching off idle and launching off the stock converter stall. I never noticed a difference then. Higher RPM's might be more noticable though.

 

i say 3000 or 3200 =)

 

I can see you are getting a lot of wrong answers with the whole PCM issue, so let me clear them up. All 94 and 95 F-bodies are OBD1. Period. 96 and beyond are all OBD2 PCMs. The difference between the 95 and 94 is that the 95 car has an OBD2 16 pin ALDL communications port (that's the port under the steering wheel that you can plug an interface cable into), while 94 and before all have the OBD1 12 pin ALDL port. The 95 car still has the OBD1 computer, however, regardless of whether it has dual cats (California only cars) or the single cat design.

Now, about the stall. You may or may not have to reprogram the PCM. Some people get very lucky and have no problems. Almost everyone does, however. I managed to fix the problem on a 94 383 stroker with a 3200 stall, but it took a long time and a lot of work. It's a PITA, to say the least. You might get lucky with a mail-order tune and fix it right away. Most likely you won't. The 94 383 originally had a PCMforless tune, and he still had the problem. I probably spent at least 8 hours of work on his car to get it to stop throwing the code 24 and make it shift properly. If you don't have the knowledge to reprogram your car yourself, or have a local dyno shop or tuner to work with the car (and the money to pay them), I wouldn't recommend going higher than 2800 stall. The OBD1 high stall problem is fairly infamous, lots of people have had to deal with it.

 

pcmforless says they have a fix for the high stall problem when i called them. But i still have to get my computer programmed the the new cam install and such. So i guess we'll see what happens when i get it back.

thanks Jason.