Is there anyway to make the BOV noise louder on a procharger setup???

 

Of course there's a way. Check this out.

 

Thats funny right there i dont care who you are!!!!! I should try that but im in texas and everybody shoots at ducks here so it might not be a good idea.

 

I've been searching for a "how to" on that mod for years. Someone please help. LOL

But seriously, I've been told you can actually run a no-$hit Blow off Valve instead of the Bypass valve on a centrifugal setup if you convert the Maf configuration to a Blow-Through setup. That means if your maf is relocated to after the blower instead of before, you don't have to recirculate the air back into the intake. I'm not sure if there will be any performance gains, maybe less heat being sent back through the blower. But it should be quite a bit louder.

 

That is correct. As long as it's a blow through setup then you can vent into the atmosphere. Although I still run the bypass valve, I vent it to teh atmosphere just to keep teh heat down. I could switch to a BOV but I'm too cheap... Rather spend the money on other parts. I'm only really concerned with heat.

Not that it makes a huge difference, but I figure that I'd rather have it draw in fresh air than to recirculate 120 or so degree air.

 

The maf on my car is in about where the factory location is, after the air blows through the intercooler...

I left my bypass valve open to just blow out on the ground, and its pretty loud. I'd much rather have a blow off valve though, that only worked when boost was higher than like 10psi or so.. ( when you have the car crankin pretty hard, then let off the gas..)

Right now mine cherps all the time when the car is not under a load, its about to get annoying. If i'm driving down the highway at say 3000rpm or so and the car is not under a load its going "cherp cherp cherp cherp" like someone is killling a bird under the hood.

I'd much rather it go like this: uh hmm .. (clearing throat)

wab wab, (taking off) waaaa, WAHHHHHHH (getting on it) CHEW (only one powerful chew at shift) WAHHHHHHHH, CHEW (shifting gears)

not WAHHHHHH chew, WAHHHHH chew WAHHhhhhh letting off.... chew chew chew chew chew(killing bird sound)

The only bad thing i've noticed from the bypass valve blowing off into the air like mine does is that when the car isn't under a load, and your like in 4th er so at about the point when its starting to build boost, the car kinda surges and jerks. If you go ahead and mash it it just pulls with no jerk, but at like part throttle I think it really just don't know whats going on

 

haha, thats great

 

ive been through this alot, and the short answer is yes, but the long answer is no. Let me explain, nobody knows how to tune a s/c with bov... and I cant find a "draw through maf" to save my freaking life. Most tuners tell me they are infact the same part - mounted in different places. the bov will cause a rich spike, which in time will damage a stock motor - forged rice burners dont have that problem because they are designed for it. with the right internals you could do it to.... now as for the "hot air arguement" thats bs, you think the air going past the s.c doenst heat up except for when its recirculated? think again... its not going to heat that air any hotter than it would have the first time around - besides that it goes through the intercooler again first anyway - so thats not an issue

the long and short of it is - just buy a mondo bypass and be done with it - cheaper, safer, and more effective

 

that would drive me crazy,

 

You seem to be confused about a lot of things here. I'm not even sure where to start.

First off, what do you mean you can't find a draw through MAF? They're everywhere! Most of the MAFs I see out there are draw through.

Second, if he wanted to run a BOV then he would want to have a blow through setup, which would most likely mean that he would also be looking for a blow through MAF, not a draw through.

I don't know how you or any tuner can't see teh differences betwen a draw through and a blow through. They are indeed a different part and they are designed differently for a reason. You don't think it makes a difference? Go from WOT to a sudden closed throttle state so that the bypass valve opens. Tell me what happens to the air that was trying to get into the engine when the TB closes. Tell me how the MAF reacts to that. Why does the sensor react the way that is does? Then maybe you'll see why they are designed differently.

Next... how is it going to cause a rich spike that will destroy the engine?

Why do you assume that tehre is an intercooler? There are plenty of situations where an air-to-air intercooler isn't needed or desired.

The hot air recirculation is BS? WTF are you talking about? If you keep recirculating the air, it gives it more time to heat up and it will get hotter. it's no different than how an inernal combustion engine reacts on hotter days. Instead, vent the air into teh atmosphere and force the supercharger to replace it with cooler air from the fenderwell. If you take 110 degree air aid pass it through a supercharger, it is gonig to come out hotter than air that was only 70 degrees when it entered the supercharger. That's the bottom line.

That's just pure common sense. But not only that, I have proof. I tune my own car and help many other people tune theirs. I have a Tweecer RT that gives me full access so that i can tune every aspect. I can also view the ACT. I have datalogs that CLEARLY show a difference in the ACT when recirculating the air as opposed to drawing in fresh air.

How many cars have you tuned by yourself? What type of blow through setup are you running on your car? How many blow through setups have you tuned? What supercharger / turbocharger are you running?

If you can't figure out simple things like draw through vs. blow through then i'm not so sure your qualified to say that what i said was bs.