i need to change to OBD1 could i just buy a PCM from a OBD1 or what else do i need. i know i need to change the knock sensors. anything else?PCMforless sells a conversion for 275 but if i could just get the seperate parts for cheaper that would be great. If i need other stuff let me know. Thanks.

 

You just need the PCM and the older knock sensor.

 

so i can just go to the dealer and get a 94 and 95 knock sensor and get a 94-95 PCM

 

The dealer would not be the best place to get a 94-95 PCM because of the cost. You can get a knock sensor for relatively cheap though probably from autozone or if not then try one of the discount dealers like Dal or Jason. I actually have a couple spare PCMs too that Id be willing to sell if you need one.

 

ya i was just going to buy the knock sensor at a dealer but i will check autozone. how much would you sell me an OBD1 PCM for

 

so i can just put the OBD1 PCM into the car with no other replacements? besides the knock sensor

 

The OBD2 cars are sequentially fired, while the OBD1 cars are batch fired (in reference to the injectors). Isn't that true? So, I think there is more than just getting a OBD1 ECM and knock sensors. I dont even have a distributor on my OBD2 car. So, what year ECM/PCMs are you talking about? '96/'97 to '94/'95???

 

I think he is talking about the LT1.

Actually you dont even need to buy a knock sensor, if you know how to solder you can take the PCM apart and solder in a resistor and it will work with you current knock sensor.

Nothing else needs to be changed, its plug and play.

 

Just out of curiosity, why are you interested to going from OBD2 to OBD1, what advantages?

 

Only 92-93 LT1s were batch fire.

 

i am going to OBD1 because my friend can tune it and it would be cheaper for me. also turbo Z how much would you sell and OBD1 PCM for

 

I went to Autozone and found a knock sensor for 51.00 and a new PCM for 120.00 but if i went with a used one could i get it out of a car with an automatic tranny and reprogram it to a manual with tunercat. also i talked to the guys from PCMforless and they said they would send me internal conversion kit. what is that and is it needed.

 

Internal conversion kit is probably the reisistor and instructions on where to solder it in. This way you wouldnt need to change the knock sensor.

 

alright, i think i will just get a new knock sensor

 

one quick question which one of these would be better for a 94 LT-1 the OBD1 or OBD2 pls..explain why??