HF VS Si MPFI

[1PhatCX]

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?

[civickiller]

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

[Hybrid1990crx]

its just the intake mani thats different, isnt it?

[civickiller]

as far as i know its just the intake mani

[1PhatCX]

But will i still get any gains with it?

[Hybrid1990crx]

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

[Shaguar47]

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

[1PhatCX]

Originally Posted by Hybrid1990crx

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

[JimCRX]

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

[Ace$nyper]

i think the HF also has a tiny TB right?

[1PhatCX]

can u swap the Si and HF throttle bodies?