Bov

[Risto]

ok i have few Questions

i am looking to buy a BOv but im not sure which one to get i have around $350 to play with give or take a little but im looking for a bov to give me maximum noise i have 10psi r32 what do use recomend

thanx heaps

[TTT]

Maximum noise..

GFB (Go Fast Bits) BOVUS MAXIMUS..

It has twin trumpets and is probably one of the loudest around.

But at 10 psi it may not be the best option.. these are mainly used on ABOVE 15psi applications. They cost about $320.

I had a GFB Mach 1 on my old RS turbo liberty and it was pretty loud.. they cost about $270 new.

Check here..

GFB SITE...

You could also go for Turbo smart but I am not a big fan of those.. they are over priced and not the best quality in my opinion..

Obivously you could spend more and go for a JAP brand like BLITZ but they are going to cost more than you are willing to pay.

Here are some pics of the GFB Bovs..

GFB Mach 1

GFB BOVUS MAXIMUS

PLEASE NOTE: with these atmo venting valves, your car will start to back fire and run rich and sometimes stall because your car has a air flow meter like all the other skylines..

GFB also make a HYBRID BOV which vents some back to the inlet like the stock bov and vents the rest to atmoshpere making the psshh sound..

These cost about $330.

here is a pic of the GFB HYBRID BOV..

ANOTHER NOTE: You will get defected and FINED with any ATMO venting BOV if the police check.

see ya..

[Blitz]

Unless you have an engineers report that is RTA certified.

*chuckle *

[SLY33]

Risto

when i was running 10 psi on my 33, i hooked up a second hand but nearly new Turbosmart Type 3 (so called "supersonic") This is said to be one of the loudest around. Even at 10psi it was still nice and loud. They often come up in the trader. Mine cost 200 bucks.

I thought the quality was fine, and they look tough, with a nice fat trumpet. I found that just going up to 12psi makes the thing sound crazy!

There is one for sale in the classifieds forum, as new, for only 280 bucks.. If i were you id buy that. Its also the current shape Anodised housing, they look real nice :uh-huh:

[Steve]

I have only tried the Turbosmart BOV, and was very happy with the results. Virtually never backfires (unlike a mate that is running a jap BOV), and is fully adjustable. The type 3 at $280 sounds like a pretty good deal.

Just my 2c worth

Steve

[G0DF4Th3R]

im running a bovus maximus and yeah like GTST says my car also runs rich and stalls particularly after coming off boost and slowing to a stop. other than that, the sound is really nice and when i drive past bus stops, the chicks always look.

bambam

[SLY33]

quote:

im running a bovus maximus and yeah like GTST says my car also runs rich and stalls particularly after coming off boost and slowing to a stop. other than that, the sound is really nice and when i drive past bus stops, the chicks always look.

-----------------------

Any BOV that vents to atmosphere will potentially cause the car to stall coming off boost (its very annoying, when i put my type 3 on, i simply turned up the spring tension and it cured it, as a negative though, it made the BOV quieter at lower boosts, as the spring was now too tight). This is coz they are AFM equipped.

-When you boost up "x" amount of air is sucked passed the AFM, and the computer supply's "x" amount of fuel for that air.

-but when you back off, most of that air is released from the inlet tract, and never makes it to the manifold to mix with the extra fuel provided. The result is a state of temporary richness as the car comes down to idle, which causes the stalling.

Therefore:- vent to atmo BOV's confuse the AFM and stock ECU.

I feel the need to state these facts as it took me time and frustration to figure it out, being new to the turbo game.

[Guest Nismo_Freak]

If you have a S-AFC you can simply tune out the studder after it vents.

[G0DF4Th3R]

yeah spoke to my mechanic and he says that one way to get rid of it would be to fit a plumback BOV or hybrid (half vent-half plumback) or simply get an S-AFC.