Ysi Restrictor Plate?
Thread Starter
Safety Car
Joined: Apr 2007
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From: SoCal CA
Ysi Restrictor Plate?
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.
Instructor
Joined: Nov 2015
Posts: 189
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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.
Instructor
Joined: Mar 2015
Posts: 108
Likes: 3
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%
Last edited by Big Jt; Jul 25, 2016 at 11:53 AM.
Instructor
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From: nj
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Last edited by RpeterK; Jul 25, 2016 at 12:08 PM.
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
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From: Earth, United States
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.
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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.
Melting Slicks
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Melting Slicks
Joined: May 2007
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From: Dayton Ohio
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.
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.
Last edited by PEETYZ; Jul 27, 2016 at 05:09 PM.
