HF VS Si MPFI

just wondering if the HF MPFI and the Si MPFI will give me the same HP gain, or if I do the HF MPFI swap will I Get any gains at all? also if I use the HF stuff can i still use the Si distributor and ECU?

the hf mpfi is smaller then si mpfi, try not to get the hf mpfi

its just the intake mani thats different, isnt it?

as far as i know its just the intake mani

But will i still get any gains with it?

i would say yes, just not as much. maybe try getting a si mani sometime down the road?

Look on the bright side. Even if you have an hf manifold with all the fixings, you could still run with the si ecu.

i would say yes, just not as much. maybe try getting a si mani sometime down the road?

thats what i was thinking of doing

I see Si manifolds on ebay all the time for like $50 shipped

i think the HF also has a tiny TB right?

can u swap the Si and HF throttle bodies?