I just picked up an ECM with an SLP prom.
It is labelled SLP A 1109.
Does anyone have any info on these?
TIA

 

I scanned and posted some SLP catalogs, see if you can find them and a number matches any of the part numbers

 

I was able to take one and read it ... compared with stock and other brands on the market. IMO, the SLP had the most number of changes in it. While fuel and spare were adjusted, other small changes were made. I can't recall the details .. would have to check later. My guess here is that SLP have access to GM's actually configuration files vs. everyone's else's table maps.

Mark.

 

This is an early catalog. What number ECM is it in?

 

With gm performance parts and Slp having different part numbers for the same tune. You might have to read the bin and look
at prom if to identify usage.

 

It was in a 92 Trans Am, unfortunately. I looked at the other catalog stuff and it seemed like it was all for MAF cars.

 

Is there a knock filter behind the prom ?

 

 

 

If it does have a knock filter look at the white board. If the second digit is R a 350 tune. P it’s for a 305. But the only way to get more info is to do a chip read.

 

I haven't gotten to the shop to look, but it came from 91 350 car. Just wondering if anyone had what the tune might be. The car had the SLP dealer upfit sticker on the rad support with nothing punched. Engine/ trans/ exhaust were gone but was a VIN 8 car.

 

The closest tune I have is the 41020, I don’t know the difference