I've looked on their site and Summit's site and all I see is 2.25" for TBI engines, and 3" for TPI. I'd run the 3" (yea call me stupid) but it says "Only for Tuned Port engines" so Im assuming there's a reason they dont want me to run them on my TBI. Perhaps just because they dont have the thing that connects from the manifold to the stock air cleaner housing (which I dont have anyways).

Technically the ones for TPI engine would fit the TBI, assuming the O2 sensor is in the same place, correct? Or am I very off here?

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Chuck Kulchar
1991 RS
Open Element w/K&N
3" cat and Force II cat-back

 

the one for the tpi will work just fine..

 

You're exactly right, the ones made for TPI dont have the stovepipe for the aircleaner. The TBI ones are made to connect to the stock tiny exhaust.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Ok, thanks both

I'd love to run the SLPs, but I just need some shortys to last me a few years while I get some money to build a 350, then its LT time I figure I'll only be putting out ~250 hp tops with the 305, so the TES should flow nicely for the time being.