Which blow off valve to get

[high3at0209]

What blow off valve should i get for my 08 speed 3
so far am going with this:
HKS Universal Limited Edition Black Super Sequential Blow Off Valve SSQV
found one for $140 on amazon

 

[Saskatchewan17]

HKS, Turbosmart dual port, or Forge BPV. All are great valves.

Make sure that you get the MS3 specific flange kit though if you are planning on getting an SSQV, otherwise you can't use it.

 

[vikonic]

Either forge, or if you don't like the ping noise, there's a similar BPV by turbosmart at **********, and no it's not a dual port. Personally, I wouldn't waste my money on dual port since this car runs best at full recirc mode. ~$150 will get you forge / turbosmart bpv

EDIT

hmm didn't realize I couldn't type that out, but its at SU

 

[MSP300]

greddy RS .... love that sound

 

[BillTheCat]

Either forge, or if you don't like the ping noise, there's a similar BPV by turbosmart ... I wouldn't waste my money on dual port since this car runs best at full recirc mode.

This. Unless you're going to re-tune the car on a dyno to run VTA or partial VTA, stick with full recirc.

And if you're still in warranty & trying to fly under the radar for dealer visits, the Forge (in black) looks a LOT like the stocker, so it's not likely to be noticed.

 

[MSMS3]

Best one is the stock BPV for overall smoothness, compatability with other mods and even for power, unless you get a boost gauge or other monitoring device and determine that the stock valve is leaking. Mine does not.

Whatever you do, the worst one to get is any valve running vent to atmosphere. Very bad for our MAF sensored ECU. Run full recirc. and your engine will thank you for it and you will perform better under all operating conditions.

 

[lavoiespeed3]

This. Unless you're going to re-tune the car on a dyno to run VTA or partial VTA, stick with full recirc.

And if you're still in warranty & trying to fly under the radar for dealer visits, the Forge (in black) looks a LOT like the stocker, so it's not likely to be noticed.

The mecano are not stupid, they know what the Stock BPV look..

 

[OnebigTymer11]

Get a synchronic

 

[GSXkiller]

I say go for the HKS, thats what I am running and I love it. PM me if you want to hear it

 

[MSMS3]

PM me if you want to hear it

Sound? Is that what it has come to?

What about this:

I can't cross link to another forum under our rules. I can cut and paste a post from another Mazda forum with "speed" in its name from Fordza 1 (also a member here), whose opinions I greatly respect on this subject:

________________________________________________________

"My results prove to me that the OEM BPV is the BEST for PERFORMANCE and price(free?), but doesn't stick closed long enough at throttle close to make the big whoosh sounds so many seem to want..."

"I'm running (over 2 years & 20k miles) a highly bolted car with my own ECU tune first via Xede piggyback EMS and more recently via ATR ECU reflash and the OEM BPV (still) works perfectly at 20+psi. I've run several aftermarket BPVs and NONE work as well as the stock BPV. In fact, I think the cheezy aftermarket BPVs may be a contributor to early turbo seal failures(smoking...) due to the shock of the pressure spikes at throttle close when shifting at high boost levels. The big pressure hit bounces the compressor wheel against the thrust bearing which MAY contribute to the oil leakage into the intake manifold/intercooler, etc." Fordza 1.

___________________________________________

I don't need no stinking sound effects. I need consistent, reliable, measurable power delivery. I realize that everyone has his or her own objectives. But BOV or BPV sound effects is a bit like adolescents entertaining each other with making arm pit farts, but that's just me. I apologize if I have offended.

My objectives are performance. I agree with Fordza 1. At my mod level, including catless dp/rp the stock BPV produces superior performance without the risks and issues identified by Fordza 1. We need a softer, less abrupt release on this small turbo, IMHO.

 

[dandan2]

Sound? Is that what it has come to?

What about this:

I can't cross link to another forum under our rules. I can cut and paste a post from another Mazda forum with "speed" in its name from Fordza 1 (also a member here), whose opinions I greatly respect on this subject:

________________________________________________________

"My results prove to me that the OEM BPV is the BEST for PERFORMANCE and price(free?), but doesn't stick closed long enough at throttle close to make the big whoosh sounds so many seem to want..."

"I'm running (over 2 years & 20k miles) a highly bolted car with my own ECU tune first via Xede piggyback EMS and more recently via ATR ECU reflash and the OEM BPV (still) works perfectly at 20+psi. I've run several aftermarket BPVs and NONE work as well as the stock BPV. In fact, I think the cheezy aftermarket BPVs may be a contributor to early turbo seal failures(smoking...) due to the shock of the pressure spikes at throttle close when shifting at high boost levels. The big pressure hit bounces the compressor wheel against the thrust bearing which MAY contribute to the oil leakage into the intake manifold/intercooler, etc." Fordza 1.

___________________________________________

I don't need no stinking sound effects. I need consistent, reliable, measurable power delivery. I realize that everyone has his or her own objectives. But BOV or BPV sound effects is a bit like adolescents entertaining each other with making arm pit farts, but that's just me. I apologize if I have offended.

My objectives are performance. I agree with Fordza 1. At my mod level, including catless dp/rp the stock BPV produces superior performance without the risks and issues identified by Fordza 1. We need a softer, less abrupt release on this small turbo, IMHO.

the stock bpv sucks and is prone to leaking. dont spread crappy information like this. do u recommend keaping the stock rear motormount too? hks is a great bov. the forge is a direct replacement. and as for that fordza guy, he may have had good experiences with his bpv but the stockers are still peices of s***. and i highly doubt a aftermarket bpv lead to early turbo failure.

 

[MSMS3]

I am running the stock BPV and yes, the stock rear MM. I am running 13.4 quarters at 106. 60-100 is 6.5 seconds or less, sometimes as quick as 6.1 seconds depending on ambient temps, etc. I have a posted video of 40-120 roll in 12.5 seconds - you can google msms3 and watch it. It might have been a bit quicker, but I busted the tires loose on the 2-3 shift even with traction control engaged. Some say this is pretty good performance for my modest mod level, but maybe not?

I agree that replacing the stock rear MM does stiffen up the drive train and reduce the likelihood of missing the 2-3 shift which I sometimes still do. This does come with a NVH penalty I'm not yet ready for.

BTW: I am at 31,000 miles.

So, what was your question again?

 

[dandan2]

there was no question. the rear mount not only stiffens the drivetrain it helps keep ur motor from falling out unlike the stocker. and just like the junk mount the stock bpv is also junk and in alot of cases leak under high boost. a bov is always a good investment in any turbo car. thread jack over, i run an hks in my protege and i love the s*** outa it.

 

[Saskatchewan17]

/threadjack on RMM.

MSMS3. Everyone is looking for something different from their Mazdaspeed3 as we have recently seen. From Sumthaiguy's poke and stretch look come to mind, and others who want to make as much power as humanly possible (BT, built motor).

One of the certain 'allures' that comes with owning a turbo car is that turbo noise. The high pitched whine of the compressor sucking in, the almighty roar of an external wastegate, and the distinctive swoosh/puff and whatnot of the blow-off valve. A blow off valve is just one of those things that many people identify a turbo car and a sure way to tell if you have a snail under the hood. Obviously you don't want that, you are into that sleeper image.

And even further on this debate, it is KNOWN FACT that an aftermarket blow off/bypass valve like the Forge, HKS, Turbosmart, or other will not leak unless it is calibrated wrong. IN ADDITION, these valves provide a quicker 'spring back' as I will call it and reduce turbo lag and throttle hesitation when putting the car into the next gear.

Sure the stocker might hold boost well enough for untuned, lower boost, stock turbo configurations (actually, I have it on right now, mainly because I don't have the money right now). But the stock valve is not ideally suited for quicker throttle response, less lag between gears and the other aspects previously mentioned.

Yet one more 'good thing' about an aftermarket BOV/BPV is the underhood eye candy it provides. Completely subjective, and another thing you probably don't like, but it can be considered a benefit.

 

[H3br3w_Ham3r]

the stock bpv sucks and is prone to leaking. dont spread crappy information like this. do u recommend keaping the stock rear motormount too? hks is a great bov. the forge is a direct replacement. and as for that fordza guy, he may have had good experiences with his bpv but the stockers are still peices of s***. and i highly doubt a aftermarket bpv lead to early turbo failure.

Really so is the stock BPV why I've seen spikes up to 22 psi? It's the stock tune that opens the waste gate at high rpms not the BPV. Please understand a topic before going about attacking someone.

You mention the forge BPV and I've had that valve on my car and after returning to stock I feel the car is much smother when letting off the gas and will open properly when I let off and not continue to force air into the motor when it doesn't want it.

People are just obsessed with that aftermarket noise they get with BOV and BPV's that, "add more performance."

 

[GSXkiller]

so whats the problem if some one buys a BOV just for the sound. It's their can and they want to enjoy driving it around. when you pay for my car, then I will listen to your opinion.

 

[MSMS3]

Point well taken. We each have our own objectives, and it is our own individual dollar. Personal changes in sound are perfectly legitimate reasons to mod.

I just don't want people to believe that the stock BPV does not perform well, even with cars modded up to the maximum abilities of the stock turbocharger. They might then go spend their hard earned dollars chasing higher performance by changing the valve. They are likely to be disappointed if they are objectively measuring the performance changes with instruments.

Change for sound. Sure. Change for increased performance, especially to hold boost better in third gear and higher -- ain't gonna happen, IMHO.

 

[GSXkiller]

Point well taken. We each have our own objectives, and it is our own individual dollar. Personal changes in sound are perfectly legitimate reasons to mod.

I just don't want people to believe that the stock BPV does not perform well, even with cars modded up to the maximum abilities of the stock turbocharger. They might then go spend their hard earned dollars chasing higher performance by changing the valve. They are likely to be disappointed if they are objectively measuring the performance changes with instruments.

Change for sound. Sure. Change for increased performance, especially to hold boost better in third gear and higher -- ain't gonna happen, IMHO.

Fair enough

 

[GSXkiller]

Here is the video of my HKS

http://www.youtube.com/watch?v=gntAjDwv-c0

 

[Saskatchewan17]

GSX, you shouldn't run VTA.