I of course know of LT1 edit, but what else is out there? Most importantly, what is the most user friendly? Who do I buy the interface cable from?

Thanks,
Jeff

 

If you have a 96-97, lt1_edit is the only option right now.
If you have a 94-95, you can also buy tunercat from www.tunercat.com

The cable you can buy from www.akmcables.com

 

I have a 95. What has the reputation for being the most user friendly?

Thanks for the insight!

Jeff

 

I have a '96 LT1 in my 36 coupe and I am finding that no one (in Austin) has purchased the '96 and later software to tune and modify.

I was told that I could use a '95 computer in my '96 simply by replacing the knock sensor. I could send the computer off I guess, but I would like to have the car and computer together in the same room. I have a place that I can go to to modify the computer while the car is on a dyno.

Can anyone comment.

Thanks

 

I have the link at home that gives the instructions for converting an OBD II to OBD I for our LT1's.

It requires a new PCM not just reprogramming. However, those can be had for $100 from a junk yard.

I like TunerCat because you can use some of their other software and modify the $EE tables and constants to include other things that currently we cannot change. However to do this, it requires ALOT of knowedge of our car's PCM's but that option is available through TunerCat.

 

Yes, you are right. I will seek out a 95 PCM.

I hope you can post the info for making this switch.

Thanks

 

Tunercat can do things that LT1 Edit cannot????????

Which is more user friendly?

 

http://carputing.tripod.com/OBDII_to...Conversion.htm

Here is the conversion website. Hmmm they do mention that the OBD II PCM can be reflashed to OBD I. Interesting.

Tunercat and LT1 E can both do exactly the same thing exactly the same way. What I was stating is that with a DEEP understanding of how the hexadecimal files are set up, Tunercat will allow you to modify and change your tables and constants...add, subtract whatever. For instance I can go in and get rid of all my A4 related stuff and not have it cluttering up my $EE programming software in TC (not the actual PCM itself).

Personally I think that LT1 E is set up easier than TC but I will stick with TC.

 

Thank you very much for that information. The trickiest part of the description will be easy for me. I ahve installed headers with easy access to my front o2 sensors. I have already eliminated the rear o2 and cats.

With my use for this LT1 I have eliminated the MAF, air pump, EGR, purge, rear o2 and cats. It sure did clean up the engine compartment - less plumbing and less wires. I have almost everything chrome Street & Performance sells for an LT1, along with the top dress-up plate and Vette covers. There are virtually no wires showing at all.

I hop this swap works becasue the last time I drove the car, one bank was lean and the other rich. Idling was non-existent and back fires were often. I limped the car home from the muffler shop a bit dejected.

 

So are you using the 93 computer, or the 94-95 computer programmed for speed density mode?

 

I talked to the guy who did my last wideband tune. He told me he used a combination of: LT1 edit, Tunercat and TTS. He said all of them offered something that the other could not. That is just freakin impressive that he was that well versed with all 3 of them. On the other side of that coin; it scares me that I may mess something up that he has done!!!! He did say that he likes LT1 Edit the best of the 3 because the ease of interfacing. I think I am more confused than before But thanks for taking the time to point me in the right direction

 

To answer Dan K. I still have the '96 computer and need to decide how to proceed - either reprogram the '96 PCM or buy a '95.

 

Either way would work. I would recommend that you go OBDI just because the tuning and datalogging software is cheaper.
Unless you already have it for OBDI or OBDII.

If you're going to go speed density mode you need to be able to play with the ve tables to correct your part throttle fueling.