C5Natie

Hey there guys, I was wondering where I could get a restrictor for my Ysi. I'm at 18-19psi and was thinking of bringing it down to 15psi or so for the street just to be on the safer side. My tune is good but I figure it'll less stresson the motor too. Would this be ideal for what I want? I was thinking of a bigger pulley but I don't wanna under spin the blower and make it lazy.

Babymogul

I'm in the same boat for wanting to push around 10-12lbs.

HardcoreABN

ECS uses a lot of restrictor plates. I would call them.

Big Jt

You realize that are your asking for is a piece of sheet metal, aluminum or steel that has a hole in it. Instead of the 3.75in opening you have, it has a 2.5inch or whatever you want.. there is no way to say..this will make Xx psi, 100%

HardcoreABN

the restrictor isn't there to adjust the boost the system makes. It is there to reduce the amount of air going into the engine.

Big Jt

I thought that was implied

RpeterK

For practical purposes its the same thing and yes it is used to restrict the boost that can be made on a given system.
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MVP'S ZO6

I wouldn't try to restrict your blower if it's making that much boost. I think putting a larger diameter blower pulley on would serve you better in this instance. The folks at ECS can assist you.

DOUG @ ECS

Agree'd, restrictor plates work great on lower boosted cars, but once you are that high in boost then the IAT's will be way too high after restricting.

Turbo-Geist

I thought 18 psi was low boost?

PEETYZ

I was kinda thinking about doing this to my little D1SC. Its a bit lazy till the higher rpms with the new longer trans gears and IAT's are within 8 of ambient now so I figured I'd give it a shot and switch to 100 meth while I'm at it to further help cool if needed (50/50 now mainly for safety)

It does make 15Psi now tho but needs to drop from a 4.25 down to a 3.6 to hit the recommended D1 impeller speed max ( I have a 8.10 Balancer) 20ish psi unrestricted would be my guess?

I know the correct answer is build a bigger fuel system, pulley down, and let it eat but I was curious how the restrictor would work.

StuntHeavy

A local shop was putting a wastegate on their systems to calm down heavy hitters.

I wonder how this would work on a smaller blower.