Swamprat's HotPipe kit with Tial BOV install

Probably only a few folks here might be able to help on this .

Since HotPipe and Tial Install I DO NOT hear the BOV operating  .
I hooked the BOV vaccum to the Brake Booster Line with a T .
Everything seems to be working just don't hear the BOV releasing pressure as before with VTA mod ??



                  Tail vaccum fitting hooked to 3/8 ID inner braided fuel line to T on Brake Booster  line ..
                                                          RX vent line temporarily capped ..

h5SWWKah.jpg

3/8 ID braided inner fuel line to T Brass fittings in Brake Booster Line
rU9ATV6h.jpg


IC to TB HotPipe for Tial BOV backside , meth/nitrous bung is now plugged with 5/16 fine thread stainless steel bolt and washers .
                                                        "  May use later  "



49YYoAsh.jpg

 
This is my first un-NA engine, so forgive my newbness here...but thought I would offer my $0.02.  Plus, it's more of a question than anything. :)

Is it possible the BOV spring is too heavy / not enough pressure from the blow-off to open the valve?
 
Its a Tial BV50 and came with white spring , Spring pressure is -9.00psi.
Hoping 4DRHTRD chimes in .... he sells the kit .
 
And what kind of 'let-off' pressures are you likely to see with stock turbos?

Also, Is that directly correlated with the psi you're creating?
ie. if I spool up 15lbs and let off the gas, ending the boost cycle, are the BOVs met with all 15lbs, or would it only be a percentage of that, that is 'blown-off'?

THANKS!
 
JimiJak said:
And what kind of 'let-off' pressures are you likely to see with stock turbos?

Also, Is that directly correlated with the psi you're creating?
ie. if I spool up 15lbs and let off the gas, ending the boost cycle, are the BOVs met with all 15lbs, or would it only be a percentage of that, that is 'blown-off'?

THANKS!
Click to expand...

The springs are available in different resistances... after the boost cycle the blowoff opens at 8 psi.. that can be changed.

For right now, just pick your eye candy/ear candy.  No demonstrable difference in performance of one aftermarket spring actuated BOV like this vs. two electrically controlled BOVs (OEM BOV setup) can be found for these hotpipes.
 
BiGMaC said:
JimiJak said:
And what kind of 'let-off' pressures are you likely to see with stock turbos?

Also, Is that directly correlated with the psi you're creating?
ie. if I spool up 15lbs and let off the gas, ending the boost cycle, are the BOVs met with all 15lbs, or would it only be a percentage of that, that is 'blown-off'?

THANKS!
Click to expand...

The springs are available in different resistances... after the boost cycle the blowoff opens at 8 psi.. that can be changed.

For right now, just pick your eye candy/ear candy.  No demonstrable difference in performance of one aftermarket spring actuated BOV like this vs. two electrically controlled BOVs (OEM BOV setup) can be found for these hotpipes.
Click to expand...

That all makes sense.
Just seems like if you have a spring that requires more tension to open it than what you're blowing off, that it wouldn't open the valve. So I wondered if that could have anything to do with swamprats problem.

Also, on a side note; is it possible to attach the tail bov to stock charge pipes, or is this more of a hot pipes specific application?
 
JimiJak said:
BiGMaC said:
JimiJak said:
And what kind of 'let-off' pressures are you likely to see with stock turbos?

Also, Is that directly correlated with the psi you're creating?
ie. if I spool up 15lbs and let off the gas, ending the boost cycle, are the BOVs met with all 15lbs, or would it only be a percentage of that, that is 'blown-off'?

THANKS!
Click to expand...

The springs are available in different resistances... after the boost cycle the blowoff opens at 8 psi.. that can be changed.

For right now, just pick your eye candy/ear candy.  No demonstrable difference in performance of one aftermarket spring actuated BOV like this vs. two electrically controlled BOVs (OEM BOV setup) can be found for these hotpipes.
Click to expand...

That all makes sense.
Just seems like if you have a spring that requires more tension to open it than what you're blowing off, that it wouldn't open the valve. So I wondered if that could have anything to do with swamprats problem.

Also, on a side note; is it possible to attach the tail bov to stock charge pipes, or is this more of a hot pipes specific application?
Click to expand...

I think working the plastic pipes (which BTW are vert restrictive) would be a nightmare... new fabbing in plastic is  a 2-3 place move for the decimal point in increased dollars, but if you've got the bucks (Mike looked into it)  Also the weight and axis of the weight on the much larger TIAL BOV would be hard to support in the plastic to prevent a twisting force on the plastic... which can leak anyway.  Plus if your thinking more boost... fix the leaks proactively. 

Both setups still just go PFFFFT when you roll off the throttle... maybe a little louder on the TIAL, but both setups are VTA.

What problem are you asking about? ...I guess I had a senior moment and missed it. 
 
BiGMaC said:
JimiJak said:
And what kind of 'let-off' pressures are you likely to see with stock turbos?

Also, Is that directly correlated with the psi you're creating?
ie. if I spool up 15lbs and let off the gas, ending the boost cycle, are the BOVs met with all 15lbs, or would it only be a percentage of that, that is 'blown-off'?

THANKS!
Click to expand...

The springs are available in different resistances... after the boost cycle the blowoff opens at 8 psi.. that can be changed.

For right now, just pick your eye candy/ear candy.  No demonstrable difference in performance of one aftermarket spring actuated BOV like this vs. two electrically controlled BOVs (OEM BOV setup) can be found for these hotpipes.
Click to expand...
Yes to an extent this is true , but the main reason I went with the Tial BOV is because of the ability to handle the  high boost pressure that the ATP's can deliver . The OEM  E BOV's will not handle the higher PSI.
 
BiGMaC said:
Both setups still just go PFFFFT when you roll off the throttle... maybe a little louder on the TIAL, but both setups are VTA.

What problem are you asking about? ...I guess I had a senior moment and missed it.
Click to expand...


No roll off blow off at all as I had before with VTA on OEM setup .
 
SwampRat said:
BiGMaC said:
Both setups still just go PFFFFT when you roll off the throttle... maybe a little louder on the TIAL, but both setups are VTA.

What problem are you asking about? ...I guess I had a senior moment and missed it.
Click to expand...


No roll off blow off at all as I had before with VTA on OEM setup .
Click to expand...

Hmmmm, see the concern now.... I'll have to think about that... I think it should, that pressure has to go somewhere, unless the opening is big enough not to make a big noise... Now I'm wishing 4DR would chime in
 
BTW, you can test it. Open the hood and put the car in drive and power brake until you get boost and release. Have someone stand to the side of the vehicle and watch for the big plunger to open up (or you might hear it).
If you don't have a second person figure a way to video with your phone and look for it.
The only thing else I can think of is there's a check valve in that line you tapped, I used it for my Flex but it was a 2011. Hook up a cheap vacuum gauge and verify you're building boost and then vacuum on that line. You can pick up a cheap vacuum/boost tester for like $15 at AutoZone.
 
4DRHTRD said:
BTW, you can test it. Open the hood and put the car in drive and power brake until you get boost and release. Have someone stand to the side of the vehicle and watch for the big plunger to open up (or you might hear it).
If you don't have a second person figure a way to video with your phone and look for it.
The only thing else I can think of is there's a check valve in that line you tapped, I used it for my Flex but it was a 2011. Hook up a cheap vacuum gauge and verify you're building boost and then vacuum on that line. You can pick up a cheap vacuum/boost tester for like $15 at AutoZone.
Click to expand...

Help !

I Did not even think about BOV at idle . I Definitely have vaccum at idle  . On start up BOV opens and stays open in Park , that does not make sense . I'm thinking I may not  have the  T in correct line.
 
Never mind, it should be open - brain fart.
It's at max vacuum and therefore will be open.
If you give it gas does it close? If so working as designed.
 
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