MSP Turkey: FACTS

[ARunto]

Hrrrm, I am installing my Greddy this weekend.(as long as Spool sends me a flange. ) I will try to tap a vac line directly from the head, to the BOV. I had my questions about so many (more then 1) things running off that same line.

You can run as many as you like off the manifold but i'd only use the boost controller to the dedicated line for the wastegate. I've found putting the stock BPV to the source of the intake manifold helps alot with boost lag and spiking.

-Alan

 

[CustomMSP]

ARunto,

You're saying that putting the wastegate vac line on a dedicated source is the way to go? Or are you saying that putting the BPV on a dedicated line is the way to go?

Thanks

 

[Dexter]

hes saying to only connect the boost controller on the dedicated wastegate line.

 

[CustomMSP]

hmm, kind of confused about the second line then... So, you're saying that only get a boost controller if you're going to run it with a dedicated wastegate vac line?? What will happen if you run the boost controller on a non dedicated wastegate vac line if that's the case here.

 

[ARunto]

i'm saying run a seperate line from the intake manifold to the BOV/BPV instead of the stock setting which T's off the wastegate line.

 

[boostisgood]

Thats what Im doin Allen. I am actrually going to try and reroute all my Vac lines, and get a ded line for my WG BOV and Boost controller.

 

[ARunto]

Thats what Im doin Allen. I am actrually going to try and reroute all my Vac lines, and get a ded line for my WG BOV and Boost controller.

Good...you'll notice quicker spool up (not like it needs to be any faster) and very small amount of boost spike

-Alan

 

[Got_boost02]

where and how are you guys finding dedicated lines???

 

[ARunto]

there's a source point of the intake manifold...some posted a picture of the line in another thread

 

[starflare21]

kinda late on replying to this but stock cars and even race cars vent back into the intake tract for better efficency, power and even economy. if you're building a race car it's functionality over style and sound, which venting the BOV is.

if you notice a lot of the rally cars make a turkey, whistle or flutter sound most teams don't even use a BOV. of course, rally teams usually rebuild the whole engine every rally anyway so....

 

[Zray]

Zray - what you're hearing is a resonance frequency going backwards on the intake track with the other intakes and the stock car (due to the position of the BPV). It doesn't do damage to the turbo unless you're making alot of boost.

There have been no issues of surging with our stage 1 FMIC and our CAI set-up.

This is Ion's description of the cause of the turkey. Soooo... I'm confused here. Someone else was saying that compressor surge isn't even an issue unless you're boosting over 20 psi, more or less what Ion's saying here. Ion also is concerned (and rightly so) about folks drilling holes in their CAI... it sure would be nice to get some of you folks and Ion together in a chat room and see what's really going on. Have they really researched this at all? Or is this just not a concern in an all-Ion setup?

 

[instylz]

Someone please do a complete writeup with pics for us...less technically inclined. Would appreciate If not pics at least a fully functional writeup.

 

[JTP]

there's a source point of the intake manifold...some posted a picture of the line in another thread

Are you guys putting a t or a y from that point to put on bpv and bov. My question is how many sources are there for the vac hose to be connected?

I know of the manifold and the wastegate. What else?

 

[505zoom]

quote: what you're hearing is a resonance frequency going backwards on the intake track with the other intakes and the stock car (due to the position of the BPV). It doesn't do damage to the turbo unless you're making alot of boost.

There have been no issues of surging with our stage 1 FMIC and our CAI set-up.

Sorry Jack, but for the first time ever I'm gonna have to disagree with you. The sound that most of us are getting is for sure comp. surge. Check out the whole thread if you have time, and check out the progression of things. There was plenty of evidence to support this. I had plenty of surge with your FMIC and the injen, and it wasn't untill I went to a dual valve setup, that I made real progress.

 

[505zoom]

Are you guys putting a t or a y from that point to put on bpv and bov. My question is how many sources are there for the vac hose to be connected?

I know of the manifold and the wastegate. What else?

Really man, it does not require even a writeup. If you need help, I'd be glad to help you out if you want to get in touch with me on the IM, or PM me on here, and I can give you my #.

The pics I have posted should help you out a lot, and really all you're doing is just installing an aftermarket BOV without removing your stock BPV.

 

[snowboy70]

awesome. im going to try to borrow my friends HKS SSQ again and **** with the vac lines.

IM THE FRIEND!!! Lets **** hard core! Not together. You know what I mean *hides in shame*

 

[instylz]

**** **** ****!!!!!!!!!!!!!!

 

[ThrillRide]

just want to say thanks to those who have helped clear some things up with the turkey. however i have a question. i am sure this has been asked but.......when i hear other turbo systems the bov produces sound when reving at idle. why does ours not do that? i only hear my turkey when shifting gears. what makes ours different?
thanks

 

[servoeyes]

two answers to this: the stock is not a BOV, it's a BPV or recirculating valve. This dumps the air back into the intake. The second part of this is that the stock airbox quites everything down.

If you're in neutral and rev to 6k and get off the gas it will fire. But our turbo doesn't really create a lot of boost unless it's under load. The turkey also isn't a BPV artifact, it's compressed air hitting the turbo's fins, which are spinning in the other direction. In actuality, a BPV should not make anysound what-so-ever...listen to a properly designed system like on a VW or Audi...they recirc, but do not have a turkey. hope that helps!

 

[ThrillRide]

well sort of. but i don't think even open vent with our system will create the blow off sound. i watched a show where they did a turbo upgrade on an audi and it had the bov sound. and also there are a lot of people with other intakes with no sound at idle revving. and of course we all know that there is no other car out there with the sound our car makes. but i think you all have found a way around that. i guess our system is just not like any other.