I have a 91 GTA with the dealer installed SLP options. The car has always had a miss in it and has never felt 'right' to me compared to my other GTAs. Sluggish through the power band. I have checked everything (fuel system, electrical, ignition and motor is strong) and replaced a few items in an attempt to fix it. Last summer I spent a lot of time asking some very knowledgeable members questions and following advice. Car still doesn't seem right.

I am wondering if it could be the SLP PROM sucks, I haven't heard anything about SLP Proms being good. All of the things I have heard have been bad. So, what makes them bad? I would have put the original Prom in it if I would have had one. I am wondering if that fixes the problem. Thoughts?

Thanks, Aaron

 

Over time a eprom can lose data or bit flip. The only way to see whats going on is compare the slp .bin file to a stock .bin

 

have you checked the multecs? when my friends 90 vettes injectors went he said it was like the car was pulling a trailer all the time and misfired a bit.

 

Thanks for the responses. You guys are talking languages that I don't understand...HA.

I think I am just going to put a stock chip in it and see what happens. I am sure I can find one cheap on the board.

Why does everyone not like the SLP Chips? Were they worse than stock or something?

 

For the most part SLPs chips sucked. I've had 3 cars with that chip, my cars went faster with the stock chip. Put in a stock one and you'll be happier.
Also OHM check your Injectors cold and hot.

 

Replaced the injectors last summer. And the new ones check good. As mentioned previously, I have done all the mechanical checks and I can't find a reason for why this car is sluggish.

Did SLP make changes in the timing or what that makes these chips bad? Everyone is saying they are bad, but I haven't heard why, specific reasons.

A couple guys have PM me, and I am thinking over what they have said. Thanks for the update.

 

Well, prolly for the reasons like "it feels sluggish" "car was slower at the track" and one of mine had a fuel cutoff/rev limiter in it.
What they changed to make them run worse I don't know.
It only matters that they do run worse.
I have even driven 3 91-2 Hawks with the SLP tunes.. They drove like crapola. I think over half have been retuned because they sucked and the other half just don't get driven enuff to notice or they don't know any better.

 

They don't drive like we do! Where are you in IL?

 

I'm close to springfield IL