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Discussion Starter #1
I have a couple friends with turbo'ed cars, and I just wanted to know how your cars are running with aftermarket BOV's. How the car run??? Is it still smooth??? DO you even see a differnce???

I really Like the sound of the Greddy Type S, what do you guys think?
 

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BOV sounds nice but not really needed unless you car is heavily modded. There is really not much to gain from having one with a stock engine.
 

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Gotta disagree with that statement trollie. If you have a turbo and a manual transmission you need some kind of BOV. Period.
 

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Thanks for the trollie comment at least you take it lightly and you didnt cuss me out LOL. Your car has a slight BOV stock but it recirculates if you make it release into the atmosphere then you are not gaining much from it.
Your MAF is somewhat preset for the air that is placed back into the engine releasing it messes slightly with the Air/Fuel ratio.
 

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You guys are funny. :lol:

My understanding so far based on reading stuff here and there is something like the logic behind Mike's post. Just don't ask me to explain cuz I'll screw it up big time. :lol:
 

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Your MAF is somewhat preset for the air that is placed back into the engine releasing it messes slightly with the Air/Fuel ratio.
I believe the SRT has a MAP sensor, Like all Neons before it :lol:
 

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paul544 said:
OK, I admit I'm a turbo newbie, but what does a BOV sound like?
You can hear it when you are meshing the pedal. Exhaust Depot have some sound clips. Have him link them for you and see the difference.

It is a calling sign of a turbo - snake hissing sound. Something that some of the NA guys fear hearing from the engine bay before racing.
 

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Youdrivewhat said:
Your MAF is somewhat preset for the air that is placed back into the engine releasing it messes slightly with the Air/Fuel ratio.
The problem with adding a BOV to a MAF equipped car is that once the air goes through the MAF the ECU will then inject enough fuel for the measured air. If you vent the air (with a BOV) that has already been measured the car will run rich, stumble, and maybe even stall.

If anyone has some extra time and nothing to do they can worry and fret about how their SRT will run with a BOV, but since SRT uses a MAP sensor instead of a MAF sensor there really isn't anthing to worry about.
 

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Discussion Starter #11
Alright...so being that the it uses a MAP and not a MAS, the car shouldn't run rich?

Cause My boy as a dsm and before he got his AFC controller he was running rich with open atomeshere bOV. I'd even use the stock BOV if its possible to have that run open atmosphere.
 

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A Blow off Valve is a more direct way of releasing pressure from the engine (boost) that is made from either a supercharger or a turbocharger. It sounds like you opened a 2-liter bottle of soda, a sharp hissing sound when you put the clutch in. It will be louder depending on the type of BOV you have.

And I have 2 things. ONE - you're not going to see a huge hp gain from a BOV. Period. TWO - It is somewhat "better" to have one, but for a stock SRT-4 the gain is mainly the intimidating sound.

oh yeah - just because a car sounds fast, doesn't mean it is. I raced a turbo'd MR2 and beat the pants off him, even though he had a killer sounding HKS BOV - that shit was loud.
 

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Discussion Starter #13
I never expected a BOV to do anything to HP. I just love the sound of the Greddy Type S. It might be ricer...but i like the sound and thats all the really matters.
 

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for the srt-4 an aftermarket BOV is a good investment. the stock one sucks wrx balls.
 

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Discussion Starter #16
I don't expect to do any major mods right away...I'd really like to just drive the car for a while stock and even do some small addons..like Turbo Timer...some A/F gauges and other shit. Then when I have those, I can go upgrade...downpipe and shit. I don't wanna blow the car up right away
 

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If you shift like a grand ma, then you dont need a BOV :)


If you plan on raising your boost levels, you will need a BOV if you want faster recoveries of the turbo after the shift. THe stock BOV cant supply enough for the extra volume that the turbo is pumping out.


WHen I instaleld my bov I noticed a significant recovery of the turbo after the shift when pumping 15psi.
 

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prove it exhaust depot :)
 

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Alright...so being that the it uses a MAP and not a MAS, the car shouldn't run rich?

Cause My boy as a dsm and before he got his AFC controller he was running rich with open atomeshere bOV. I'd even use the stock BOV if its possible to have that run open atmosphere
re-read kyles post

The problem with adding a BOV to a MAF equipped car is that once the air goes through the MAF the ECU will then inject enough fuel for the measured air. If you vent the air (with a BOV) that has already been measured the car will run rich, stumble, and maybe even stall.

If anyone has some extra time and nothing to do they can worry and fret about how their SRT will run with a BOV, but since SRT uses a MAP sensor instead of a MAF sensor there really isn't anthing to worry about.
get it?
 

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turbo4life said:
prove it exhaust depot :)
Come down to Fl and I will take you for a ride with my HKS BOV Vacuum line disconnected. Then Ill take you for another ride with it connected.

You will notice that the boost comes up sooner with teh hks unit installed.
 
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