Quote:
Originally Posted by Woo
Installed my Holley iNTECH CAI and it was rather easy, but I can’t say the same for the MSD spark plug wire set. They threw codes left and right. It seems they weren’t able to seat properly and weren't “truly” compatible with my 16 SS. The cables where short by 2 inches it seemed and summit racing’s application system gave me green ✅’s indicating this part works for my model. Once I removed the CAI and plug wires replacing them with the OE, the codes went away. OnStar actually sent me an email notification of an emissions failure code...... so I reinstalled the CAI and all is fine, no codes.
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I was reading an engine buildup, I think it was a magazine type article online with an LSA engine. They put on the MSD wires and other stuff and LOST 30hp. They put the OEM wires on and gained back the 30hp.
It sounds like some problem like you encountered. I made a mental note-no msd wire upgrade thank you.