ok, so I was an idiot that just wanted a bit more power out of my 95 318is so I coughed up $53 dollars for an ebay chip. As expected out of a $53 dollar chip, I did not receive the performance side pretty much just a stock chip with a fancy sticker on it. I know TMS performance chips are worth it, so my question is can I still switch over to a TMS chip without any problems?. I ask this because a pin broke on my stock chip while taking it out, and IF the ebay chip did change anything in my ECU would that cause the TMS chip to not be compatible with my car anymore? The only thing I did notice with the ebay chip was it caused my check engine light to come on sometimes when I started the car but as soon as I revved about 2000 it went away. I know this is a odd question but just to be sure.
Any input is appreciated, Thanks