I'm working on putting a tpi system on my 350. The tpi came off an 1986 carmaro. I do not have the maf sensor or the bellows to attach it to the throttle body, and am having a hard time finding these at savage yards in that they are now 20 + years old. I googled "vettes with tpi's" under the image listing, and found several pictures of tpi systems that did not have an maf sensor conncected anywhere in the cold air intake. Soooo, does one need to have this sensor connected, to have the system run correctly? I have ordered the painless wiring harnessness and a book on swapping tpi's onto sbc's. I'll see if either mentions running the system without, but thought I would ask here to see if anyone has experience with this. thanks - kip