95 DLC vs. 94 DLC w/ Hypertech

[The LT1 That Could]

So I was under the impression the Hypertech programmer I was selling was for 94/95 LT1 cars. Guy bought it for his 94 T/A. Different connector...OBDI...I did not know this. Is there an adapter out there to make the programmer work for this guy???

Looking at maybe something like this...http://www.obd2allinone.com/sc/details.asp?item=aldlobd1

Are the PCMs the same? They communicate the same way? Both OBDI PCMs...Wouldn't it just need the proper adapter?

Any help is appreciated!

[The LT1 That Could]

Well, just talked to Hypertech and they said no workie...even with OBDI adapter. Said the programmer won't talk to the PCM. FAIL!

[firebird_1995]

I've never owned a hypertech but I have tuned 94 and 95 lt1 pcms with the same program (tunercat). I have the cable with the 16 pin connector for the 95 and to program the 94 I just spliced in a spare 16 pin aldl port to the 12. It was just 2 wires.

[The LT1 That Could]

I was thinking the same thing; that the PCMs were both the same as far as programming went. I know LT1 Edit works the same way. 94 AND 95. Maybe it's something in the Hypertech that won't communicate correctly.

[steveh]

The Data signal on his 94 ALDL connector is on pin M. This needs to go to pin 9 on your 95 ALDL connector and ground (pin A on his 94 connector) needs to go to pin 4 on your 95 connector.

It can be done with 2 jumpers.

http://shbox.com/1/DLC_wiring.jpg