Why am I the only one chiming on this topic? lol
Tune port injection is a decent "factory" setup but it is not meant for aftermarket built motors IMO. If I recall, I've read on several forums that the TPI setup falls flat on its face after 5500 rpm as it does not deliver enough fuel at higher rpms. It's a good start as far as streetability, but doesn't leave much room for upgrades as you will constantly need to get the ECM re-flashed to current specs or to meet upgrades.
If you go the fuel injection route, the best (and most inexpensive) is Comp Cams FAST system or the Powerjection III system.
Tune port injection is a decent "factory" setup but it is not meant for aftermarket built motors IMO. If I recall, I've read on several forums that the TPI setup falls flat on its face after 5500 rpm as it does not deliver enough fuel at higher rpms. It's a good start as far as streetability, but doesn't leave much room for upgrades as you will constantly need to get the ECM re-flashed to current specs or to meet upgrades.
If you go the fuel injection route, the best (and most inexpensive) is Comp Cams FAST system or the Powerjection III system.