Just installed a greddy rs rec.b.o.v and i was told to set the spring pressure on a hard setting but the release doesn't start to happen only when i'm above 13 psi or more and get the flutter sound after i hit 23 psi part throttle..Is this normal cause im not wot or is the spring still hard?also how much boost will it hold doing the single spring mod....

 

go to evomoto.com and do the single spring mod, I believe you only turn it 2-3 times when you first make contact with the spring. The fluttering is normal when you off/on or partial throttle. This is what I have observed with my RS greddy D/V. I did the single spring mod to mine and it works like a champ. Make sure you throw some teflon tape around the fittings.

http://www.evomoto.com/tech_articles...h_article_id=7

done, enjoy

 

Doing this mod,will it change the sound of the blow off valve.......

 

No ,

 

Help please thanks

 

throw in trash is the only help

i have the same one i have tried every mod i could and it still flutters at partial throttle
i have a red on e85/93

 

I heard the single spring mods works great they say if u are still getting flutter then plastic piece inside is ripped....I just need to know how much boost will it hold after the spring mod is done.

 

The RS doesn't have a lower vacuum port.

 

i KNOW I SIMPLY ASKING HOW MUCH BOOST WILL IT HOLD AFTER THE SINGLE SPRING MOD..THANKS.

 

im telling you i did the single spring mod it will hold up to 35 no problem

the inside of mine is perfect no tears

it will still flutter no matter what you do
i ordered the greddy s bottom part and will match it with the rs top i was told this will help since it has an extra vacuum port
should have it by next week

 

Okay jr.

To start off, this evomoto test is pretty stupid. The graph displays when the valve is beginning to open and fully open. These units are both in (in/Hg) or vacuum. This makes no sense unless they meant psi in the fully open column, otherwise it means that the valve is closing when reaching lower in/Hg If the fully open column is to be meant in psi then I guess it means that it holds up to 21 psi?

Second, this test is on a Type-S. The Type-RS is a few mm's bigger, composed of different metals and a different design. Comparing the two is like comparing the stock 8 bov to the stock 9. With that said, your profile shows you drive a 9. Why in the first place are you using a Greddy BOV when the 9 is better in everyway?

You sound like just another burner with an evo that wants the cool burner sounds from an aftermarket bov.

 

My friend u have no clue of what your taking about...For your information i did have a 9 metal bov on the car crushed cause i'm running 31 psi sometimes 32 psi and a lil over 500 whp..

 

Thanks for the help that's what i needed to know.....Good luck on your bov mod..

 

Then why are you even mentioning a Greddy BOV?

If you need to touch a Greddy BOV then go play with the Type R. Even then Greddy doesn't recommend the Type-R over 450hp. But I guess you could pull it off with the stiffer spring.

 

That's why they say take the smaller spring out so the one spring compresses the blow off valve together and u only adjust it very minimal...My friend did it to his and it has not flutter but i was wondering about how much boost it will hold...