TBI intake restriction

[TechNova]

this is a pic of the restriction I removed from the oval silencer on my TBI truck.
I cut it out with a body saw, I have done many of them since the trucks were new.
It reduces the size from 3 1/2" down to 2 1/2", might not make a difference but easy to do and not drawing underhood air.

 

[PlayingWithTBI]

It reduces the size from 3 1/2" down to 2 1/2", might not make a difference but easy to do and not drawing underhood air.

I would imagine it doesn't do much when you're running a stock small block and shifting ~4K RPM but, getting up to and over 5K yeah, it'll make a pretty big difference. It'd be fun to check it before/after with a MAP sensor. If you don't get 100% at higher revs, it's getting restricted somewhere.

 

[TechNova]

One of those things we always did, feels like it helps and certainly doesn't hurt.
Just like the exhaust, I'll open it up a little when it needs replacement.
May not help with TBI but not costing anything to do it.

 

[thegawd]

I'm confused and have no idea what I'm looking at? I had a TBI in a 94 Burb but that was many years ago...

this pic is just not explaining anything to me.

 

[PlayingWithTBI]

I'm confused and have no idea what I'm looking at? I had a TBI in a 94 Burb but that was many years ago...

It's inside the housing which sucks through the port under the headlights. That's supposed to quiet down the intake noise.

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[thegawd]

Ahh thanks man! now I get it!

I ran my 4 High wires through the funnel. into the fender right out a pre existing opening on the inner fender right beside the battery. It was perfect.

I never saw this part on my old 94 though, I gave it a complete tune up but I did not look through this section.

what would the truck sound like without this "baffle"?

 

[PlayingWithTBI]

what would the truck sound like without this "baffle"?

A little quieter than no filter at all