bypass valve install question

[boost2dms6]

alright so i just ordered a SU TurboSmart bpv and it came in the mail today.. Was planning on putting it on but damn its only 15* outside and I don't wanna freeze to death..

Also I don't have a boost gauge at the current moment so is it a bad idea to install it without being able to check the boost pressure? I am a newb to modding a turboed car.. Just curious if a boost gauge was a neccessity to have when doing bolton mods?

 

[tunersteve]

Contrary to popular belief, you won't get any higher boost values with the new BPV. This is controlled by the boost targets set in the ECU, and will open the WGA to disperse any excess boost to protect the motor. You will, however, notice that the response between shifts/decel with a new BPV will be quicker, and will also cause higher spikes. Spiking is inevitable, but not a huge worry.

So, go install the BPV and enjoy it. I just swapped from a Forge to the SU/TS one and love it.

 

[boost2dms6]

Thanks Steve.. Any concern that its so damn cold outside? Tubes being hard to take off or cracking

 

[tunersteve]

Thanks Steve.. Any concern that its so damn cold outside? Tubes being hard to take off or cracking

Nah, they're not that dry and brittle yet. Just take your time and if possible, do it on a warm motor (let it idle and warm up a bit or after 15 min. or so after a decent drive.

 

[boost2dms6]

Okay got it on with no problems.. Took it for a spin and it sounds good.. I guess the next thing I need is a SRI or CAI to really hear the full enjoyment..

One thing I dont understand when I watch all these videos on youtube and what not of people showing their bpv.. When I rev mine at idle all I hear is the motor 90% of the time.. Is this normal?

 

[tunersteve]

You don't notice it as much unless it's under load. That's normal.

 

[boost2dms6]

Thanks steve last question.. I know on my buddies bpv it has a way to make it hard/soft or tight/loose however you say it.. Whats the method for doing so on this one or is it fine the way it is straight out of the box?

 

[tunersteve]

Thanks steve last question.. I know on my buddies bpv it has a way to make it hard/soft or tight/loose however you say it.. Whats the method for doing so on this one or is it fine the way it is straight out of the box?

From what I've read, you can change the inner spring with a stiffer one, but for most applications, the one it comes with is fine.

 

[VRMS6]

Dam Steve your a 1 man encyclopedia of knowledge........

 

[tunersteve]

Dam Steve your a 1 man encyclopedia of knowledge........

Thanks! I try...

 

[amilliems6]

Thanks! I try...

can we get a "encyclopedia" sign under ur tag where it says mod? lol

 

[tunersteve]

can we get a "encyclopedia" sign under ur tag where it says mod? lol

Lol, send evilmonkey a PM and see what you can do.

 

[batou079]

lol nice! i have an SU/TS BPV on the way too!
i was hoping to find a used Dashhawk to purchase before this to be able to graph/record differences between the stock and new bpv.

from what i have been hearing is that the stock bpv tends to leak for people fairly commonly.
Meaning it may spike to ~15 PSI, but cannot hold very high boost through the powerband. With a quality aftermarket BPV the idea is that they are engineered to hold higher boost... and ofc not leak.
So yes, you aren't looking at any power gains, but you are looking at a potentially better/more evened out power band.

prolly not QUITE how it was explained to me, but does that sound about right Steve?

 

[tunersteve]

The leak is a big myth. You'll hit 15.6 psi all day on a stock tune with the stock BPV, but it recovers slowly, and you really notice it between shifts. With the Forge, and now the SU/TS valve, the response time between shifts is much quicker, giving the car more 'snap' between shifts. I've also seen many guys get higher SPIKING boost levels, but this is reeled back in with the ECU and the wastegate actuator. I don't think a better power band is the way I'd describe it, but it'll make the car drive better as a whole.

 

[coyfish]

Why did you change to TS steve?? Sick of the ping ??

Im thinking of doing the same. You notice any difference in performance or are they the same. Both are solid products.

 

[tunersteve]

Why did you change to TS steve?? Sick of the ping ??

Im thinking of doing the same. You notice any difference in performance or are they the same. Both are solid products.

Pretty much. The Forge sound got old and I wanted something quieter, and the TS wasn't available when I bought the BPV in the first place. They seem exactly the same in terms of performance, but totally different in sound. I also have the stiffer spring from SU that I have yet to try.

Honestly, I don't understand people paying $300+ for a 50/50 valve when the $150-160 Forge and TS do the job just fine. Until the AP allows people to tune for VTA, there's no reason IMO that people should try to run like that. It's one of the most 'ricer' things you can do.

 

[i8urgti]

Pretty much. The Forge sound got old and I wanted something quieter, and the TS wasn't available when I bought the BPV in the first place. They seem exactly the same in terms of performance, but totally different in sound. I also have the stiffer spring from SU that I have yet to try.

Honestly, I don't understand people paying $300+ for a 50/50 valve when the $150-160 Forge and TS do the job just fine. Until the AP allows people to tune for VTA, there's no reason IMO that people should try to run like that. It's one of the most 'ricer' things you can do.

my thoughts exactly. on top of that, i see people get them time after time, then run in recirculation anyway.

 

[coyfish]

After installing my inlet pipe my forge got significantly quieter. And it only goes off if you hit boost. Even then its a distinct ping.

When I just had an intake it was obnoxiously loud and prolonged shwwiiinnnggg. Cool at first but when im driving to school at 7AM im just in no mood lol.

 

[Kitus66]

Okay! I got the Forge BPV and tired of the ching!!!! sound, so I tried using one of the spacer that came with and the ching! sound went away and you're only hear it when you totally floor it, but want to know if it matters where you put the spacer on top or bottom. I'm using yellow spring BTW.