VandykeT/A

From what I understand in order to do the OBDII to OBDI conversion (97 Z28) I need a ecm from a 94-95 model and a resistor for the knock sensor. Well on ebay I see ecms set to your vin number for sale but since the car is a 97 will giving them a 97 vin still work? Do I even need it vin matched? Can I just pull a ecm out of a 95 M6 car and stick it in? Also this is for a friend of mine and hes looking at using Tunercat and learning to tune. For those that have used tunercat how difficult is it to use? Same idea as HPtuners or is it a little more simple. Thanks

SS RRR

iTrader: (2)

You can use a resistor, but you can also just keep it plug/play and go with a OBDI knock sensor. You do not need a vin matched PCM, however if you have emissions concerns you will fail before you roll your car in for a test since OBDII emissions is tested through the data port and whether or not OBDII applies is done through the VIN on the vehicle. They try to test your car it will come back with a no communication type error.

VandykeT/A

We don't have any kind of emissions testing here. They just check the lights and shake a wheel. Is the obdI knock sensor the same connector as the obdII or will I need the connector to?

SS RRR

iTrader: (2)

Nope. It's the same. Good luck.

Ed Wright

iTrader: (1)

There isn't really any good reason to put an OBD1 PCM in it. Tunercat has OBD2 software also. Very easy to use. There is absolutely no advantage to an OBD1 PCM. As said, the vin doesn't matter.

VandykeT/A

I thought the only OBDII software was the JET system and I seen that it was around 500 bucks and you had to buy another software in order to log it. If Tunercat makes software to tune the 97 ecm the same as it would the 95 then thats what I'll do. I'll look into it. Thanks

96capricemgr

iTrader: (1)

I thought Tunercat sold the OBD2 LT1 editor to JET who then wattered it down and jacked the price.

If Tunercat still offers OBD2 software I would seriously look at that Tunercat is good to deal with. When I did the OBD1 swap LT1 Edit for OBD2 was still in testing and not released and LT1 Edit sucked support wise so I bought tunercat and went OBD1 but that was a long time ago and you do have more options now.

Ed Wright

iTrader: (1)

OBD2 Tunercat covers about everything through the new Camaros. I use it for all LSX through 2004, and through 2006 for trucks. He did Jet's software, but never sold anything out to them.

96capricemgr

iTrader: (1)

That is good news I have an 05 truck I wanted to buy software for.

96capricemgr

iTrader: (1)

http://www.tunercat.com/tnr_desc/jetlicense.html

speed_demon24

iTrader: (6)

Not a bad price from amazon.

http://www.amazon.com/14005-Dynamic-.../dp/B0018CWGS8

96capricemgr

iTrader: (1)

I just cringe at the thought of spending a dime with JET though they sell so much junk I wouldn't want to pay them for retailing someone else's good product.

cardo0

Howell specializes in EFI conversions: http://howellefi.com/. I did find one of the Howells was a development engineer for GM. But i never read anyone using Howell for mail order tunes.

cardo

96capricemgr

iTrader: (1)

A local used Howell for some work on a blower b-body wagon and I only met the guy once but his result combined with what he paid them and such I wouldn't be trying them out.