I know this may sound like a stupid question, but i dont know much about injection systems. I wanted to know what kind of stuff you can do to modify you TPI system. Other than porting your plenum and getting bigger injectors is there anything else you can do?

------------------
Later,
Vomex
'89 GTA 5.7L TPI

 

Porting the manifold base or buying a hi-flow base, buying a larger throttle body, buying better runners, throttle body coolant bypass. Those and the mods you mentioned won't do much without other mods (like cam, headers, catback, heads, etc.) that can take advantage of them.

 

Dont get bigger injectors on a stock engine, you dont need them.

Read the tech articles on this site, particularly the one entitled "Suggested Mods for Thirdgen TPI Engines".

Also check out the local SoCal Thirdgen club in my sig.


------------------
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=-