this is on a 04 rcsb 5.3, got a 09 intake swap going on. the new intake has flex fuel inj.33lbs.swapped tac mod. and got speartech adt 4 the throttle. question is that my old intake has a fuel reg on fuel rail and the nnbs intake dont is this a prob? truck just floods out .do i have the wrong tac module?any advice? thank u. pics if possible

 

can you put the old fuel rail on the newer intake . . . ?

You're going to need the regulator.

 

well i got it to work.its a ls2 throttle body,tac module and a spear tech adt.my problem is that the throttle opens from the bottom. i dont know if it will work well or not? but it feels good. still no tune so dont even know if its tunable with this set up . so need help to make sure that im ok on what i got going on.any past xpierienc info would be helpful. thanks guys/ couldnt get the 08 throttle 2 work/ maybe wrong tac module? dont know

 

When I swapped to the Vette LS2 TB, 02 TAC module, and speartech harness it was a true plug and play thing. No tuning required. I don't believe I've ever even gone into the tune and adjusted the scaler setting for the 90mm.

 

yup did a 02 tac,harness and throttle and it runs good but does it matter hp wise on it opening from the bottom? how does it differ if any? thanks

 

I don't see that it matters one bit which way it rotates. I don't know what if any HP I gained with the mod. I do remember seeing slightly more air flow numbers in the logs after the mod so I'm confident it helped WOT.