[smokeywokey]

Installed turbo inlets on my 335is went with MMP to stock air box routing, sound only happens when i let off the gas when under high boost, not sure if running a bigger vacuum hose from throttle body to BOV will fix it or maybe its the DCI.. any suggestion or input would be nice,

[mastamike911]

Sounds like a normal BOV to me...

[AK.]

+1 I hear a BOV? Haha.

[e92days]

Depending on which BOV you have, the connection to the throttle body is likelier smaller than the one on your BOV. You can tap the hole in the TB (I recommend reading about it first) to make it bigger for a shorter lasting *whoosh*

[smokeywokey]

after the pshhhh blow off, it's a weird noise, hard to explain, I'm about to try a bigger vacuum line and see if that works

[Jeff@TopGearSolutions]

If you are running a Tial to the stock inlet that may be the issue.

[smokeywokey]

Originally Posted by Jeff@TopGearSolutions

If you are running a Tial to the stock inlet that may be the issue.

I have HKS.. I changed the vacuum line from manifold to BOV, little more responsive yes, but I threw my stock air box back on and it fixed it, so if anyone else has this problem it's your DCI that make that weird noise

[BSM n54iS]

Originally Posted by smokeywokey

Installed turbo inlets on my 335is went with MMP to stock air box routing, sound only happens when i let off the gas when under high boost, not sure if running a bigger vacuum hose from throttle body to BOV will fix it or maybe its the DCI.. any suggestion or input would be nice,

Doesn't look like an iS...there's your problem!

[smokeywokey]

Originally Posted by Black n54is

Doesn't look like an iS...there's your problem!

lol it's an is hamie! click on my YouTube video, I just posted a video of a pull on it, FBO+inlets and e85..

[smokeywokey]

Originally Posted by Black n54is

Doesn't look like an iS...there's your problem!

here let me help you out check how fast she shifts

http://youtu.be/1X7JobYk6hk

[smokeywokey]

[BSM n54iS]

Originally Posted by smokeywokey

lol it's an is hamie! click on my YouTube video, I just posted a video of a pull on it, FBO+inlets and e85..

Was just going off your car title homie , my gauge usually has the 335is barely lit up also...no beef

[BSM n54iS]

Originally Posted by smokeywokey

So no BOV sound during shifts? Just with boost built and letting off of it?

[smokeywokey]

Originally Posted by Black n54is

So no BOV sound during shifts? Just with boost built and letting off of it?

yeah I wish that backlight was lit more :/ but nope it doesn't chirp when shifting, only letting off the gas when boost is built, how does she look tho for FBO and e85? stock turbos

[smokeywokey]

Originally Posted by Black n54is

She pulls! Can't deny that, just curious what mods/tune do you have? Kitty less pipes w/stock is exhaust? Your HKS was whooshing between shifts before inlets then? I'm sure other members have a better opinion on the matter as well

Wish I had e85 up here in Reno :/

I have everything lol, And BQ custom tune.. 70% e85 I'm in vegas 😁😁 and no it's doesn't woosh then or now between shift ls only when I let off the gas but I guess the DCI with inlets made it sound weird

[e92days]

Originally Posted by smokeywokey

yeah I wish that backlight was lit more :/ but nope it doesn't chirp when shifting, only letting off the gas when boost is built, how does she look tho for FBO and e85? stock turbos

Looks good!

Btw, I knew a guy who had the second whoosh and his problem was the connection to the manifold being smaller than the connection to the BOV. The intake might have something to do with it, I really don't know. Just my .02

[smokeywokey]

Originally Posted by e92days

Looks good!

Btw, I knew a guy who had the second whoosh and his problem was the connection to the manifold being smaller than the connection to the BOV. The intake might have something to do with it, I really don't know. Just my .02

it started after my inlets were installed, come to find out it's just the DCI, I put the stock air box back on and it sounds fine, I'll leave it for now and do a custom intake with the stock box

[MM Performance]

It's the BOV due to extra air flow from inlets. I would not put the stock box back on and restrict flow compared to your DCIs, just adjust your BOV by adjusting the spring rate in it to make it right.

[smokeywokey]

Originally Posted by MM Performance

It's the BOV due to extra air flow from inlets. I would not put the stock box back on and restrict flow compared to your DCIs, just adjust your BOV by adjusting the spring rate in it to make it right.

I don't think the HKS BOV is adjustable is it?..

[TrollToll]

Originally Posted by smokeywokey

I don't think the HKS BOV is adjustable is it?..

Not the new ones. They used to be about 8 years ago.

[smokeywokey]

Originally Posted by Yournamehere90

Not the new ones. They used to be about 8 years ago.

so what do I do then? have to deal with it lol..

[MM Performance]

Originally Posted by smokeywokey

so what do I do then? have to deal with it lol..

You can't open it to get to the spring and shim it with washers or cut the sprig a little?