BOV Kit for the JWT TT
#1
BOV Kit for the JWT TT
-----PRESS RELEASE-----
Owners of the Jim Wolf Technology 350Z/G35 Twin Turbo Kit find themselves in possession of what is arguably the best turbo kit on the market today. With it’s useable power band and unnoticeable turbo lag, the twin Garrett/JWT -Sport 530BB Dual Ceramic Ball-bearing turbochargers make for a fantastic force induction upgrade to these VQ35's. The kit includes two cast manifolds, two ball-bearing turbochargers, FMU, fuel Pump, spark timing control module, JWT pop charger type intake w/ heat shield, oil pan spacer with oil return line kit, state of the art front mount intercooler, washer fluid relocation kit, coolant kit, charge-pipe kit, and all necessary hardware & instructions for a complete install. The JWT kit utilizes a BOSCH recirculating valve that although extremely efficient leaves something to be desired by some turbo owners, the benefits of the sound produced by an atmospheric Blow Off Valve.
Owners of the JWT were not left with many options when it came satisfying their aural desires. Other companies offer various other recirculating valves none of which produce a noticeable improvement in both boost stability and sound. Replacing a bypass valve with a push type blow off valve leads to stalling and idling issues with the JWT’s draw thru MAF set-up. The car would sound nice but consistent compressor surge and stalling led us to believe there was truly no benefit to this upgrade. If you were unaware of these issues and welded a flange in addition to closing the stock recirc ports you were in for some big time issues. After many customer and vendor demands the designers at Relentless Autosports sought out to tackle this issue. Because of their great reputation in the industry, Relentless Autosports sought out the help of GTSPEC to help design and implament this JWT TT BOV conversion kit.
Relentless Autosports along with GTSPEC went to work designing a BOV kit for JWT TT customers that not only performed well, but exceeded their strict goals for quality and craftsmanship. For this reason they turned to HKS to be the focus of their system. The SSQV utilizes a pull type system that not only stays shut under boost but also doesn’t open under partial throttle, which can create rich conditions that lead to stalling. By designing a truly bolt-on system we were able to eliminate the need to spend money having the stock JWT system converted to accept the SSQV. Using a purpose designed cast flange, OEM port plugs, SAMCO Sport hosing, and other necessary hardware, Relentless Autosports created and GTSPEC implemented a fully functional BOV conversion kit that allows JWT TT owners the benefits of HKS’ SSQV BOV in an easily reversible kit that has no stalling or idling issues. No retuning of the factory ECU or supplied Split Second box are necessary for this upgrade. It is a truly bolt-on application that will eliminate boost creep, fluctuating idle and the desire to hear an atmospheric Blow Off Valve.
PARTS list
1 - HKS Super SQV Blow Off Valve
1 - Relentless Autosports/GT SPEC Cast Flange for 350Z/G35
1 - OEM Port Plug for lower intake pipe
1 - GTSPEC/SAMCO Sport Silicone Hose
1 - HKS Inline Air Filter
1 - HKS Silicone Intake Port Hose
3 - 30mm Hose Clamps
4 - Black Wire Ties
1 - Installation Instructions
MSRP $455
Owners of the Jim Wolf Technology 350Z/G35 Twin Turbo Kit find themselves in possession of what is arguably the best turbo kit on the market today. With it’s useable power band and unnoticeable turbo lag, the twin Garrett/JWT -Sport 530BB Dual Ceramic Ball-bearing turbochargers make for a fantastic force induction upgrade to these VQ35's. The kit includes two cast manifolds, two ball-bearing turbochargers, FMU, fuel Pump, spark timing control module, JWT pop charger type intake w/ heat shield, oil pan spacer with oil return line kit, state of the art front mount intercooler, washer fluid relocation kit, coolant kit, charge-pipe kit, and all necessary hardware & instructions for a complete install. The JWT kit utilizes a BOSCH recirculating valve that although extremely efficient leaves something to be desired by some turbo owners, the benefits of the sound produced by an atmospheric Blow Off Valve.
Owners of the JWT were not left with many options when it came satisfying their aural desires. Other companies offer various other recirculating valves none of which produce a noticeable improvement in both boost stability and sound. Replacing a bypass valve with a push type blow off valve leads to stalling and idling issues with the JWT’s draw thru MAF set-up. The car would sound nice but consistent compressor surge and stalling led us to believe there was truly no benefit to this upgrade. If you were unaware of these issues and welded a flange in addition to closing the stock recirc ports you were in for some big time issues. After many customer and vendor demands the designers at Relentless Autosports sought out to tackle this issue. Because of their great reputation in the industry, Relentless Autosports sought out the help of GTSPEC to help design and implament this JWT TT BOV conversion kit.
Relentless Autosports along with GTSPEC went to work designing a BOV kit for JWT TT customers that not only performed well, but exceeded their strict goals for quality and craftsmanship. For this reason they turned to HKS to be the focus of their system. The SSQV utilizes a pull type system that not only stays shut under boost but also doesn’t open under partial throttle, which can create rich conditions that lead to stalling. By designing a truly bolt-on system we were able to eliminate the need to spend money having the stock JWT system converted to accept the SSQV. Using a purpose designed cast flange, OEM port plugs, SAMCO Sport hosing, and other necessary hardware, Relentless Autosports created and GTSPEC implemented a fully functional BOV conversion kit that allows JWT TT owners the benefits of HKS’ SSQV BOV in an easily reversible kit that has no stalling or idling issues. No retuning of the factory ECU or supplied Split Second box are necessary for this upgrade. It is a truly bolt-on application that will eliminate boost creep, fluctuating idle and the desire to hear an atmospheric Blow Off Valve.
PARTS list
1 - HKS Super SQV Blow Off Valve
1 - Relentless Autosports/GT SPEC Cast Flange for 350Z/G35
1 - OEM Port Plug for lower intake pipe
1 - GTSPEC/SAMCO Sport Silicone Hose
1 - HKS Inline Air Filter
1 - HKS Silicone Intake Port Hose
3 - 30mm Hose Clamps
4 - Black Wire Ties
1 - Installation Instructions
MSRP $455
#3
#4
Originally Posted by ZentraediG35
Very cool Scott, great job. Is this available/compatible with the upgraded JWT BB700 turbos? Is a dual setup, (2) HKS SSQV BOV's, possible? I would think that the dual setup would be able to keep up with the BB700 power/psi levels of 600hp+...
Thanks.
Thanks.
This is designed as a single intake/single BOV kit. A single SSQV is able to keep up just fine with the 700BB kit, and most any PSI or power levels that you could throw at it.
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FelikssG35 (05-29-2021)
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2007 G35 with only 36000 miles about to put the engine through the machine shop +JWT TT Kit I have
Instructions for BOV JWT
Hello Scott, where could I find instructions for installing a BOV on my JWT Kit, or will a professional know just what to do with the parts listed? Thank you very much for your time (if someone other than Scott could answer me also please do so, thank you - Feliks
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A professional will definitely know what to do, they'll know where in the system to install different types of BOV (atmo or recirc), they'll cut and weld your cold side in the appropriate locations, they'll have it work right the first time.
The problem though is the JWT system pulls through the MAF to feed the turbo, even this HKS BOV is going to cause issues because it's atmospherically dumping air that's already been metered. The JWT kit in it's original configuration really needs to be on a recirculated valve like how it ships originally so you aren't losing unmetered air.
If you want to atmo the BOV you would want to relocate the MAF up between the BOV and throttle body, the reason this isn't typically done on the VQ is the housing is plastic and really doesn't hold up well to high boost, 8 psi you'll probably be fine but anything higher and you risk breaking plastic or the gasket just not holding. Best bet is to eliminate the plastic MAF housing and bolt the actual sensor into another fabricated 2.5" to 3" tube (stock is like 2.5 but the factory MAF can work in a 3"). Then you can fab some kind of plate that fits over the MAF to help clamp it into place.
The only thing you "gain" with an atmo BOV is the noise though, unless you just gotta have all that WHOOSH sound when you let off the pedal just stick with the recirculated BOV that your kit already has.
The problem though is the JWT system pulls through the MAF to feed the turbo, even this HKS BOV is going to cause issues because it's atmospherically dumping air that's already been metered. The JWT kit in it's original configuration really needs to be on a recirculated valve like how it ships originally so you aren't losing unmetered air.
If you want to atmo the BOV you would want to relocate the MAF up between the BOV and throttle body, the reason this isn't typically done on the VQ is the housing is plastic and really doesn't hold up well to high boost, 8 psi you'll probably be fine but anything higher and you risk breaking plastic or the gasket just not holding. Best bet is to eliminate the plastic MAF housing and bolt the actual sensor into another fabricated 2.5" to 3" tube (stock is like 2.5 but the factory MAF can work in a 3"). Then you can fab some kind of plate that fits over the MAF to help clamp it into place.
The only thing you "gain" with an atmo BOV is the noise though, unless you just gotta have all that WHOOSH sound when you let off the pedal just stick with the recirculated BOV that your kit already has.
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FelikssG35 (05-30-2021)
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2007 G35 with only 36000 miles about to put the engine through the machine shop +JWT TT Kit I have
Thank you!
A professional will definitely know what to do, they'll know where in the system to install different types of BOV (atmo or recirc), they'll cut and weld your cold side in the appropriate locations, they'll have it work right the first time.
The problem though is the JWT system pulls through the MAF to feed the turbo, even this HKS BOV is going to cause issues because it's atmospherically dumping air that's already been metered. The JWT kit in it's original configuration really needs to be on a recirculated valve like how it ships originally so you aren't losing unmetered air.
If you want to atmo the BOV you would want to relocate the MAF up between the BOV and throttle body, the reason this isn't typically done on the VQ is the housing is plastic and really doesn't hold up well to high boost, 8 psi you'll probably be fine but anything higher and you risk breaking plastic or the gasket just not holding. Best bet is to eliminate the plastic MAF housing and bolt the actual sensor into another fabricated 2.5" to 3" tube (stock is like 2.5 but the factory MAF can work in a 3"). Then you can fab some kind of plate that fits over the MAF to help clamp it into place.
The only thing you "gain" with an atmo BOV is the noise though, unless you just gotta have all that WHOOSH sound when you let off the pedal just stick with the recirculated BOV that your kit already has.
The problem though is the JWT system pulls through the MAF to feed the turbo, even this HKS BOV is going to cause issues because it's atmospherically dumping air that's already been metered. The JWT kit in it's original configuration really needs to be on a recirculated valve like how it ships originally so you aren't losing unmetered air.
If you want to atmo the BOV you would want to relocate the MAF up between the BOV and throttle body, the reason this isn't typically done on the VQ is the housing is plastic and really doesn't hold up well to high boost, 8 psi you'll probably be fine but anything higher and you risk breaking plastic or the gasket just not holding. Best bet is to eliminate the plastic MAF housing and bolt the actual sensor into another fabricated 2.5" to 3" tube (stock is like 2.5 but the factory MAF can work in a 3"). Then you can fab some kind of plate that fits over the MAF to help clamp it into place.
The only thing you "gain" with an atmo BOV is the noise though, unless you just gotta have all that WHOOSH sound when you let off the pedal just stick with the recirculated BOV that your kit already has.
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Either option really is fine, it mostly depends on what the build of the car is shaping up to be. If you're going full flaming ricer then yeah you want the sound of an atmo, if the car isn't running a bodykit, wild wheels, and a quieter exhaust it would feel inappropriate to be generating more noise from the BOV than is coming from the exhaust tips ![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
If the car is somewhere in the middle then it may or may not work for the car, just go into the build with a plan of what you want the final picture to look like.
![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
If the car is somewhere in the middle then it may or may not work for the car, just go into the build with a plan of what you want the final picture to look like.
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FelikssG35 (05-31-2021)
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2007 G35 with only 36000 miles about to put the engine through the machine shop +JWT TT Kit I have
G35
Either option really is fine, it mostly depends on what the build of the car is shaping up to be. If you're going full flaming ricer then yeah you want the sound of an atmo, if the car isn't running a bodykit, wild wheels, and a quieter exhaust it would feel inappropriate to be generating more noise from the BOV than is coming from the exhaust tips ![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
If the car is somewhere in the middle then it may or may not work for the car, just go into the build with a plan of what you want the final picture to look like.
![Smilie](https://g35driver.com/forums/images/smilies/smile.gif)
If the car is somewhere in the middle then it may or may not work for the car, just go into the build with a plan of what you want the final picture to look like.
![Icon17](https://g35driver.com/forums/images/smilies/icon17.gif)
#14
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Yeah when it comes to turbo selection my best advice is to just call the manufacturer and give them a realistic idea of what you want to do and let THEM suggest a turbo. There's so much math, science, real world experience needed to pick the correct one for each application that there is no "one size fits all" that's going to make everyone happy. Let the guys who build them recommend what they think would be best for your build.
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FelikssG35 (05-31-2021)
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2007 G35 with only 36000 miles about to put the engine through the machine shop +JWT TT Kit I have
G35
Yeah when it comes to turbo selection my best advice is to just call the manufacturer and give them a realistic idea of what you want to do and let THEM suggest a turbo. There's so much math, science, real world experience needed to pick the correct one for each application that there is no "one size fits all" that's going to make everyone happy. Let the guys who build them recommend what they think would be best for your build.