can you put a HKS SSQV Version III BOV on a JWT TT kit? It appears the MAF sensor is right at the air filter and wouldn't allow you to use a BOV that vents to atmosphere without idle and stalling issues when it dumps.

I'd really like to install a BOV on a JWT TT without having issues with it. Has anyone figured out how to install a BOV on the JWT TT kit and have the kit run without issues?


Thanks in advance

 

Tell me you are kidding!!

 

actually I'm not kidding. Its a legit question. I've looked at alot of the engine bay pics of people with the JWT TT kit and I've never seen a BOV mounted in the engine bay so it prompted me to ask. I know the kit comes stock with a recirculation valve...

is there something obvious I'm missing here that prompted you to think I was kidding?

 

I have had both the 700bb and 850bb JWT turbo kits and I used the HKS bov on both.....and it's in the engine bay. There are 100s of members on here that have or had this kit. There are tons of post and pictures about this on here .

It seems that I am not the only one that thinks you are kidding.... They are viewing your thread but not responding

 

place the BOV in your charge pipe before TB. thats all

 

I was led to believe it wasn't that simple because the BOV would be mounted after the MAF sensor and cause all sorts of issues like stalling and the idle being all messed up.

Am I wrong on this?

 

It's not a bad question. You are correct, it is not a "good" idea to mount a VTA blowoff valve after the mass airflow sensor. Every time it vents it will cause a rich condition (assuming you are using the MAF sensor to meter air and not just as an IAT sensor, i.e. using a Haltech) because you will be venting air that the computer has metered. This can be very bad if the BOV is open at idle, but I believe the HKS is one of the few that stays closed at idle so at least you wouldn't have any issues with that. Something tells me that XKR is not using MAF as a load reference.

I believe you can get a recirculation fitting for the HKS. That might be your best bet.

 

I'd be running the MAF to meter air and not just IATs. I'd be tuned on a UTEC and was hoping to use the SSQV to VTA not recirc...

unless I'm mistaken the only safe way to do that is to relocate the MAF on the intake pipe and put the flange for the SSQV before it.

I have a Injen CAI right now and could easily cut the MAF sensor adapter out of the pipe and have it welded into the intake pipe of the JWT kit that connects to the throttle body (closer to the throttle body end) and weld the SSQV flange closer to the front of the same pipe. Then just cap off the nipples on the pipe the recirc valve connects to

 

My answer to the OP was that Yes you can use a BOV with the JWT kit....I use a BOV with and without a MAF....

This has been discussed many times on here and I was directing the OP to the search section.

 

I've been searching using all different kinds of criteria "JWT TT BOV" "JWT blow off valve" JWT SSQV" and most of what comes up isn't info related to the JWT TT kit and how to go about putting a SSQV blow off valve on the kit or where to place it or anything else relating to how to replace the recirc valve with a VTA blow off valve setup

XKR I sent you a PM regarding this... can u help me out with some info?

 

Ok...Replied

 

Whats wrong with the recirc valve? Or is it the little sound of a SSQV that you like

 

jwt kit has the maf placed pre turbo, you will not have a problem having a bov post turbo

 

its the sound of the SSQV and the RFL BOVs that I like. Nothing is wrong with the recirc. valve that came with the kit

 

thanks for the info. Thats the type of information I was looking for.

Someone else was kind enough to snap a pic of where they placed their Greddy RS BOV on the kit so I know exactly where to put my BOV now


Thanks for the replies to my question even though it seemed stupid or trivial to some of you

 

I have SSQ BOV on my JWT TT 530bb kit

 

How do you figure? Is this what you are using? Are you using MAF as a load reference?

Putting a vent to atmosphere BOV after the MAF sensor is never a "good" idea. Sure the car might run OK, but if the valve is open at idle it will be sucking in air that is not being metered by the MAF so the computer's airflow calculations will be all wrong and it will have to add fuel to compensate for the extra air that is not being metered. Similarly, when it blows off it will be venting air which has been metered and will cause a rich condition.

I wouldn't do it.

 

Use MAP sensor with UTEC and then it's a non-issue.

 

Pre-turbo piping air flow is different that post turbo. the maf sensor is always seeing air as long as your engine is running.

if your MAF sensor is placed post turbo and your BOV is on the same pipe, yes you will encounter a problem.

most F/I system its recommend to use a MAP sensor, easier in tuning and no matter the temp difference it will almost always give you accurate readings.