[Proper Motion LLC]

Originally Posted by MrWhite1015

yeah just installed mine and i love it ! much better than the tial that i had before... just two things that i have noticed ...

1) on the highway under light throttle i can hear air rushing out of the valve (this is only when my boost gauge is in vacuum)



any thoughts on this ?

I noticed that too, but as soon as you give it a tiny bit more throttle the noise goes away, also if you give it a tiny bit less throttle the noise goes away too.

I figured the same thing is happening with the stock DV's, it's just impossible to hear with the air being recirculated in hoses.

[MrWhite1015]

only reason i dont think so is because i didnt hear it with the tial ....

[scalbert]

Originally Posted by Panoz

The difference is obvious ,i think...

Not really IMO. You need the X scale to be the same to tell any meaningful difference. It appears the duration of boost held, the quickness of releasing it, after the shift is less. But the X scale is also greater which would shrink the width of the spike. So, I cannot tell for sure there.

The ramp rates look similar which is no shocker.

What is suprising is the steadiness on boost. It appears stock has the smoothest boost curve. Both aftermarket units have more ripples in them which may suggest leaking.

What iterations of maps were used for the tests and what Stage?

[Panoz]

Originally Posted by scalbert

The ramp rates look similar which is no shocker.

What is suprising is the steadiness on boost. It appears stock has the smoothest boost curve. Both aftermarket units have more ripples in them which may suggest leaking.

To my eyes the 3rd graph is the best (in terms of boost stability) from the rest two. The graph is a straight line...no decline whatsoever...isnt this the right thing?
I cant understand where it seems like there is a boost leak. wouldn't that change the whole graph stability?

Originally Posted by scalbert

What iterations of maps were used for the tests and what Stage?

Stage 2 at all times...cant remember the maps. Its likely the ones released around October

[scalbert]

Originally Posted by Panoz

To my eyes the 3rd graph is the best (in terms of boost stability) from the rest two. The graph is a straight line...no decline whatsoever...isnt this the right thing?
I cant understand where it seems like there is a boost leak. wouldn't that change the whole graph stability?

The dropping boost is by design and just a result of the ambient conditions and maps used. The ripples are the telltale sign.

[Panoz]

Originally Posted by scalbert

The dropping boost is by design and just a result of the ambient conditions and maps used. The ripples are the telltale sign.

I got your point ...I will look on this.

[Dan335i]

Is there any part throttle fluttering at all with this bov?

[ERIC_335i]

is there a difference on the power output?

were there losses?

[Panoz]

Originally Posted by Dan335i

Is there any part throttle fluttering at all with this bov?

No flutter at all...thats the idea behind this BOV. There is no diafragm so the blowing off is instant and there is no flutter.

Originally Posted by ERIC_335i

is there a difference on the power output?

were there losses?

No...this is not a power-mod ,it gives no additional power but helps the already existing power to be applied better with no losses and better response.

[Proper Motion LLC]

Originally Posted by Dan335i

Is there any part throttle fluttering at all with this bov?

As said none at all, I have an automatic and if I let get of the throttle while under boost it makes a loud "psshhh" sound if I let go of the throttle while under very very light throttle and hardly any boost it makes a very slight "pssshhh" sound.

Originally Posted by ERIC_335i

is there a difference on the power output?

were there losses?

Well I think my oem DV's were leaking with Map 8, so yah there would be a power gain for me

[Forcefed3]

How much did it cost to get that extra bit of charge pipe? They usually stop and connect the the flimsy rubber tubing. Also, looks great! And is there anyway to get the synapse portion of that chart back up?
Thread is back from the dead!

[Proper Motion LLC]

Originally Posted by gbreeE90

How much did it cost to get that extra bit of charge pipe? They usually stop and connect the the flimsy rubber tubing. Also, looks great! And is there anyway to get the synapse portion of that chart back up?
Thread is back from the dead!

I don't remember how much I paid for the Upper IC Pipe that goes between the charge pipe and the intercooler, I think somewhere around $60?