Just had the RRM IC kit installed, and I was wondering how many people out there with the RRM Kits have upgraded their BOV's. I am looking into upgrading mine. Are there any performance gains in doing so? Other than that, I want one that sounds nice, and has a nice crisp sound to it. Any suggestions? What about prices?


Thanks,
Jay

 

I think that you can get the Greddy Type S from RoadRace. Cant remember how much. BOV's don't give you any performance gains, only different sounds.

 

well i really wanted to know, how many people out there with the RRM kits, have upgraded their BOV's.

 

I have thought about it. But it's just not worth it. I think it's like 200 or so, maybe a little more for the GReddy BOV and hardware from RRM. They quoted me before, but that was a long time ago. That's a lot of money for sound if you ask me. If you want a louder sound, and you got the money, go for it. It's just not worth it to me.

 

i c i c

 

the 2g bov will get louder when you go stg2.

 

how much louder?

 

this much: ( )

i dont know, forgot who it was that said it that went stg2.

 

das kool den, i guess imma get a stage 2 clutch n alluminum flywheel first, i don't really care that much about sound, only if it were cheaper

 

Smart man. Definitely not worth the money. Rob talked me out it when I ordered my kit two years ago. It's just not worth it. Clutch and flywheel are much better ways to spend your cash. Good choice.

 

i have the greddy, it sounds sick

 

I don't know if it would be as loud as those wrx's with the VTA BOV.. i talked to someone from RRM and they said that if we were to go from Re-circulating to VTA we'd bog and stall alot.. so.. i'm guessing since we're recirculating getting a type s or an ssqv BOV wouldn't really be worth it.. but to each his own.. ask boni.. i think he has a type-S on his..

 

oh its worth it.

 

Let me regurgitate an apparently since-forgotten bunch of facts. You car runs on a MAF air metering device. Air is metered before compression, and the calculations for fuel are made based on the amount of air metered. Blow off that vent to atmosphere are located AFTER the MAF, after the metering has occured, and before combustion with air that has already been compressed. If your ECU thinks you're getting X amount of air, and calculates how much fuel to inject based upon that and you vent Y amount of air from the BoV then you're left with the same amount of fuel with significantly less air. Your car will run extremely rich. Your car will bog. Your car probably will stall. Unless your ECU has a way of knowing how much compressed air is vented, and when it is vented it will always add more fuel than is needed when the BoV vents. Karmann Vortex MAFs are not designed with VTA in mind, and because of this will not function normally if you choose to VTA.

And as far as performance goes, as long as your BoV isn't leaking compressed air, and opens when there's sudden pressure drop, you will not gain from "upgrading" it. The best BoV you can have is one that does not leak, and opens when you need it. How it looks and how it sounds are just frills, but if that's where you want to put your money, then at least be aware that's all you're getting from it.

 

Thanks hobie, u made a lot of points clear to me. but i am still not understanding the VTA n stuff like that. Can you suggest a few different types of BOV's I could look at? And I might get it just for the sound and looks, who knows?