Hey I’m new to these forums so forgive me if this is in the wrong section. I have a 1995 gmc c1500 and am currently in the process of swapping the 305 for a 350. The 350 engine is up and running thank goodness however I have a question about the chip. I had done some reading saying that for optimal performance you need to swap the current 305 chip for a 350 one so I got a jet stage 1 chip and it seemed to not run as rich once I swapped it out. I’ve seen where the jet chip has prongs that connect to the factory prom chip and was wondering if that was necessary and if so will the factory 305 chip conflict with the new 350 chip? This is the first time I’ve ever done anything like this so any constructive advice is appreciated thanks.
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