New (to me) 1993 ATX can I remove superchip?

[Joe Rainwater]

Runs great but has rough downship under no load coasting down. I've searched and it looks like superchips have a pretty bad rep, can I pull the one that is in it to eliminate that as a variable?
The car has a larger MAF, high flow cats/y pipe, borla exhaust, weld on subframe connectors, aluminum subframe mounts but looks otherwise stock down to the original radio.
Just did the 100k plus rod bearings(147,000 miles) to make me feel better.
Thanks

 

[luigisho]

Depends on how out of range the aftermarket MAF is. To be safe if you go to stock MAF you should be fine.

 

[Joe Rainwater]

Is the procedure as simple as disconnect the battery and remove the chip? Maybe put some tape over the port?

 

[luigisho]

Pretty much. There is an idle relearn procedure
http://www.shoforum.com/index.php?threads/how-to-reset-the-idle.10161/
but other than that it should be about that easy. Again, the larger MAF may affect how well it runs with stock programming but nothing else in your list of mod/aftermarket parts should be a problem for stock computer.

 

[rubydist]

I would put a stock mafs on at the same time I pulled the chip, and I would definitely recommend doing both of those - the Superchips are of no value and there is no need for a larger mafs on a stock engine.

pull the battery cable and let the car sit overnight so all capacitors have discharged. then you can simply pull the chip off the pcm and tape over the hole with electrical tape. change the mafs while you have the battery disconnected. put the battery cable back on and you are good to go.

 

[Joe Rainwater]

Thanks for the input, I'm really surprised at how much I like this car. At 80 on the interstate it isn't even trying.

 

[luigisho]

It'll do over 140..or so I have read...

 

[Joe Rainwater]

I cant wait to find out
Pulled the chip, ran great, shifted lower than before. Then the VSS failed, that thing is a pain to get to! Maybe this will be the last detail and I'll get to enjoy her now.