are the performance chips for the lt1 on ebay even worth my time and money or the module is it all just a bunch of

 

Only the 93 ECM has a removable "chip". 94 and up have a fixed chip, and require flash programming. 99.9% of the "chips" sold on the internet are rip-off products, usually consisting of a 25-cent resistor, that do absolutely NOTHING. We have several sources that are frequently recommended for tuning. If you have a 93 (why not add a signature so we don't have to keep guessing what year car you own I'm sure I've sugggested that already) have a chip burned for your specific setup by a knowledgable tuner. Don't buy some generic junk off of eBay.

 

ok thanks