Tial Q vs Tial QRJ BOV

[Fat Mac]

So I recently purchased the BOV adapter and 6psi Tial Q BOV from BMS. Admittedly, I didn't do much research prior to purchasing, I just assumed it would work fine. BMS stated they went with 6psi based on the amount of vacuum our vehicle pulls at idle. I've seen a few threads on here with people stating they have had issues with that BOV, even when connected directly to the manifold. Mishimoto even did the R&D article where they explain that they had issues with the Tial Q, and they recommend the 3psi Tial QRJ. They explained that the Q is simply overkill for the Stinger. I haven't found much in these forums regarding the Tial QRJ on our vehicle. I'm also keen to the idea of the QRJ because it would be a more seemless install because I would not have to bypass the solenoid as I understand. Trying to decide if I should return the Tial Q, eat the restocking fee, and buy the QRJ? Can anyone convince me the Tial Q is a wiser choice? Is a BOV even necessary on our cars, even when running JB4 level boost values?

 

[Postalpsychosis]

Hi Fat Mac,
I am running into a similar problem. I am trying to research the TiAL QRJ 50mm because I just bought the Mishimoto BOV adapter. My problem is that when trying to purchase, it ask me 3 different sizes of hoses for the outlet or vent to atmosphere? I have no clue which settings to get, I attached a pic below. How did you make out? Any suggestions on settings from the pic?

 

[StingertimeNC]

Running JB4 on map 7, peaking around 21-22 psi. Stock BOV seems to work fine. Also plenty of noise with open intakes installed. Is an aftermarket BOV necessary for anything other than noise? Oh, I also have the EWG wires from Burger.

 

[Fat Mac]

Hi Fat Mac,
I am running into a similar problem. I am trying to research the TiAL QRJ 50mm because I just bought the Mishimoto BOV adapter. My problem is that when trying to purchase, it ask me 3 different sizes of hoses for the outlet or vent to atmosphere? I have no clue which settings to get, I attached a pic below. How did you make out? Any suggestions on settings from the pic?

I believe you would just want the vent to atmosphere outlet if you're looking for the sound.

I decided to just return the Tial Q kit I got from BMS, they were generous enough to waive the restock fee if I took store credit. As much as I like the sound, it wasn't worth it to me if it meant I was causing excessive damage to the turbo when the valve didn't open when it should, or stayed open when it shouldn't. So I will be leaving it stock for now, however I might revisit it later.

Like StingertimeNC said, the stock BOV on our cars is reportedly pretty sound, so there isn't really a strong benefit from the aftermarket.

 

[ShaPoopieZ]

I wanted to go the single Tial route. After reading all the posts and looking through all the info I decided on the GFB Mach2's and Whistling trumpets. They are nearly silent at low speed city driving. But then give a healthy blast when you get in the pedal hard.

I love them so far. Direct fit and way cheaper then the single Tial.

Fast good service from Torq as well.

 

[Htcdroid03]

I had the same problem as well. sold the Q on ebay and bought the QRJ which works perfectly fine with the stock solenoid. for the options you wold want the diffuser vent to atmosphere. The GFB bovs are also a great option

 

[Bdavid1122]

I had the same problem as well. sold the Q on ebay and bought the QRJ which works perfectly fine with the stock solenoid. for the options you wold want the diffuser vent to atmosphere. The GFB bovs are also a great option

Sound any better than stock?

 

[Htcdroid03]

Sound any better than stock?

I could barely hear anything from stock, it's a full on whoosh

 

[Bdavid1122]

I could barely hear anything from stock, it's a full on whoosh

Did you use a diffuser outlet, or just straight out?

 

[Bdavid1122]

Contacted Tial today I will include what they said, hopefully some one will find it useful as well.
I did notice that Tial recommended the -10 psi spring for the Q and mishimoto recommended the -6 psi.
Seems to be some confusion with the Q so I'm going with the QRJ as soon as the black one is back in stock...



We worked directly with Mishimoto during the development of that adapter, and it's designed to allow the use of either the Q, QR or QRJ, so any of them could be used. If you intend to use the BOV as an atmospheric-discharge item, than either the Q or QRJ can be used in this manner.

We prefer the QRJ for road or road/track applications, and it can support over 1000BHP worth of bypass flow, so it's certainly capable of the job. The other advantage to the QRJ is that, due to the design, it tends to have a more linear response characteristic, which lends well to FWD and AWD cars, or any car where handling is affected by throttle response. It also has a fairly unique noise signature.

The Q, as our largest BOV, is capable of supporting over 1800BHP worth of bypass flow, but due to the design, can act a bit differently on road cars, often having very sudden effects upon the handling as it opens. When it opens, it's quite loud.

With the QRJ, since it is a modular device, you'd choose the BOV based on the color and spring rating. Due to the design, we would suggest the -3psi spring for the 3.3L Stinger. Once the valve itself is chosen, you'd select the necessary adapting flanges and clamps for your adapter.

Since it can get a bit confusing, here are the part numbers you would need for a QRJ to fit the Mishimoto adapter and for a diffused outlet:

BOV: P/N varies based on color and spring (reference attached)
V-flange o-ring: 001628
V-clamp: 001624
V-flange inlet adapter: 004781
Diffuser-style outlet adapter: 004806 (Note that no adapter is 'needed' for the outlet for atmospheric discharge)

As to the question regarding the diffuser without the slots machined into it, well, those are actually 'mistakes'. There was a small run of those flanges that were produced, and the machining operation for the slots was missed. Some of them have made their way into promotional or sponsorship products, but the actual finished part is designed to, well, 'diffuse', so those slots aid in that diffusion, and are integral to that design.

For reference, no outlet adapter installed will provide the loudest noise signature from the QRJ, and, of course, if you found that to be a bit too much, the diffuser will soften it up a bit, and even then, if it needs to be quieter, you can thread in one of the available hose-type adapters and route the discharge to the airbox, which makes it fairly quiet.

Also of note; the QRJ installs with the 'side' port as the inlet, and the 'end' port as the outlet. While it is possible to install it backward, and it will still function, the design of the tapered piston and pressure chamber provide for much better response when it's installed correctly.

If you choose to use the Q BOV, you won't need to purchase any additional flanges or clamps, and you would then just select the color and spring rating. Due to the design of the Q, you would want to use a stiffer spring than with the QRJ, and I'd suggest considering the -10psi spring for that unit.

Let me know if this is helpful, and if you need a referral to order either item, just let me know where you're located and I'll try to help.

Best Regards,

 

[Htcdroid03]

Did you use a diffuser outlet, or just straight out?

I have the diffuser outlet it makes the whole look nicer

 

[22bjh22]

Contacted Tial today I will include what they said, hopefully some one will find it useful as well.
I did notice that Tial recommended the -10 psi spring for the Q and mishimoto recommended the -6 psi.
Seems to be some confusion with the Q so I'm going with the QRJ as soon as the black one is back in stock...



We worked directly with Mishimoto during the development of that adapter, and it's designed to allow the use of either the Q, QR or QRJ, so any of them could be used. If you intend to use the BOV as an atmospheric-discharge item, than either the Q or QRJ can be used in this manner.

We prefer the QRJ for road or road/track applications, and it can support over 1000BHP worth of bypass flow, so it's certainly capable of the job. The other advantage to the QRJ is that, due to the design, it tends to have a more linear response characteristic, which lends well to FWD and AWD cars, or any car where handling is affected by throttle response. It also has a fairly unique noise signature.

The Q, as our largest BOV, is capable of supporting over 1800BHP worth of bypass flow, but due to the design, can act a bit differently on road cars, often having very sudden effects upon the handling as it opens. When it opens, it's quite loud.

With the QRJ, since it is a modular device, you'd choose the BOV based on the color and spring rating. Due to the design, we would suggest the -3psi spring for the 3.3L Stinger. Once the valve itself is chosen, you'd select the necessary adapting flanges and clamps for your adapter.

Since it can get a bit confusing, here are the part numbers you would need for a QRJ to fit the Mishimoto adapter and for a diffused outlet:

BOV: P/N varies based on color and spring (reference attached)
V-flange o-ring: 001628
V-clamp: 001624
V-flange inlet adapter: 004781
Diffuser-style outlet adapter: 004806 (Note that no adapter is 'needed' for the outlet for atmospheric discharge)

As to the question regarding the diffuser without the slots machined into it, well, those are actually 'mistakes'. There was a small run of those flanges that were produced, and the machining operation for the slots was missed. Some of them have made their way into promotional or sponsorship products, but the actual finished part is designed to, well, 'diffuse', so those slots aid in that diffusion, and are integral to that design.

For reference, no outlet adapter installed will provide the loudest noise signature from the QRJ, and, of course, if you found that to be a bit too much, the diffuser will soften it up a bit, and even then, if it needs to be quieter, you can thread in one of the available hose-type adapters and route the discharge to the airbox, which makes it fairly quiet.

Also of note; the QRJ installs with the 'side' port as the inlet, and the 'end' port as the outlet. While it is possible to install it backward, and it will still function, the design of the tapered piston and pressure chamber provide for much better response when it's installed correctly.

If you choose to use the Q BOV, you won't need to purchase any additional flanges or clamps, and you would then just select the color and spring rating. Due to the design of the Q, you would want to use a stiffer spring than with the QRJ, and I'd suggest considering the -10psi spring for that unit.

Let me know if this is helpful, and if you need a referral to order either item, just let me know where you're located and I'll try to help.

Best Regards,

Mine is installed in the proper recommendation, clamp is tight, but the BOV rotates. Any ideas if this is normal. Seems to function fine.

 

[EzP41NB0W]

So I know GFB with there respons kit says spring preload isn't a factor with their valves and Mishi says go with Tial QRJ with 3 psi spring and run off solenoid. From what I understand the solenoid flips from boost to vacuum when the ecu tells it to. So why couldn't u just put the 3 psi spring in the Q and call it a day? The 3 psi should keep it closed at idle because their shouldn't be any vacuum until the solenois actuated correct? So technically you could run the weakest spring off the solenoid and it would work just fine, no??

 

[22bjh22]

So I know GFB with there respons kit says spring preload isn't a factor with their valves and Mishi says go with Tial QRJ with 3 psi spring and run off solenoid. From what I understand the solenoid flips from boost to vacuum when the ecu tells it to. So why couldn't u just put the 3 psi spring in the Q and call it a day? The 3 psi should keep it closed at idle because their shouldn't be any vacuum until the solenois actuated correct? So technically you could run the weakest spring off the solenoid and it would work just fine, no??