1 i got my tpi unit used, at some point some body put some effort in to this thing and gutted the lower intake all the way to the center of intake. they also ported the bottom of the stock runners alittle

was this worth it or does it defeat the porpous of the long runner design?

2 the po also had no injector locks on it, it didnt look like any of it had been a part for a long time but it had been run, smelled of fresh gas.

are the locks 100% necessary?

 

Siamesed runners and lower intakes does indeed defeat some of the resonance that makes the TPI system produce torque at lower RPMs.

With stock fuel rails and stock intake base, the only purpose for the injector clips is for ease of assembly. Once the injectors are installed and the fuel rails are bolted down, the injectors cannot lift out or sink lower.

 

??? about the fuel rail.

when i took it off of the lower, the rail was wobbly and the transfer tubes felt lose. the tabs that hold them in were tight, just wondering.

 

that is normal. when it gets bolted to the lower, like the injectors, it will not go anywhere.

 

thanks guys