Heads up on blow off valves on the 135i

eunosracr · 03-23-2008, 01:05 PM

AFTER TEST FITTING WE FOUND OUT THE UR BOV FITS!! I HAVE IT INSTALLED AND IT WORKS GREAT!!!!

I bought the UR 335i blow off valve kit to fit on to my 135i a few months ago thinking it would fit because it was the same engine. I tried to install it yesterday and the intake pipe that goes connected to the throttle body is totally different in the 135i. Thus, the 335i blow off valve kits will not work on the 135i. Vendors please get to work on a kit for the 135i. Thanks in advance!

Mikebuzzsaw · 03-23-2008, 01:55 PM

Thats good. Sell the BOV and never buy one again. :thumbup:

eunosracr · 03-23-2008, 02:11 PM

I have it up for sale. I need a BOV or Forged DV because I have read the stock plastic ones are good for only up to 12lbs of boost. Let's just say Im running a bit more than that bwahahaha.

dim135 · 03-23-2008, 02:17 PM

forge DVs

eunosracr · 03-23-2008, 02:20 PM

Quote:

Originally Posted by dim135

forge DVs

Definitely looking into these!

coco_m3 · 03-23-2008, 05:08 PM

buy AA's! and post pics so i know if i want it...

turbomg · 03-23-2008, 05:12 PM

Quote:

Originally Posted by eunosracr

I have it up for sale. I need a BOV or Forged DV because I have read the stock plastic ones are good for only up to 12lbs of boost. Let's just say Im running a bit more than that bwahahaha.

Says who? I've spent a lot of time over on e90post, and I don't think this is a commonly held opinion. Many people are replacing their diverter valves, but that has more to do with improved function and response over the stock units, not any fear of blowing them out with too much boost pressure.

eunosracr · 03-23-2008, 05:29 PM

Quote:

Originally Posted by wrx2135i

buy AA's! and post pics so i know if i want it...

I am going to talk to them tomorrow while they are fitting the intercooler. Their current BOV will not work either. Its missing a pretty big hole the 135i intake has which some hose goes connected to.

blacknbean · 03-23-2008, 05:30 PM

Quote:

Originally Posted by turbomg

Says who? I've spent a lot of time over on e90post, and I don't think this is a commonly held opinion. Many people are replacing their diverter valves, but that has more to do with improved function and response over the stock units, not any fear of blowing them out with too much boost pressure.

agreed

eunosracr · 03-23-2008, 05:31 PM

Quote:

Originally Posted by turbomg

Says who? I've spent a lot of time over on e90post, and I don't think this is a commonly held opinion. Many people are replacing their diverter valves, but that has more to do with improved function and response over the stock units, not any fear of blowing them out with too much boost pressure.

I have read that over on E90, as well as the stock units possibly failing at higher boost levels. Im going to try and find the link.

mtla4 · 03-23-2008, 07:09 PM

Sell the Bov as someone said get a Dv. As an Audi Guy I can understand that you want some PSSHHHITTTT sound but you'll probably end up running richer and throwing CEL. Stay with Dv or if you want some sound a CAI will help. Worst case scenario an hybrid BOV(on 1.8t 80% recirculated-20% air) or twin piston like the forge 004.The turkey sound is annoying some how. Dv for me this time

eunosracr · 03-23-2008, 07:24 PM

The n54 runs a MAF sensor not a MAP sensor so venting to atmosphere does not cause it to run richer or trigger cel lights. I will probably end up running Forged dV's. We will see.

TunedM2C · 03-23-2008, 09:48 PM

Quote:

Originally Posted by dim135

forge DVs

+1

TunedM2C · 03-23-2008, 09:50 PM

Quote:

Originally Posted by eunosracr

I bought the UR 335i blow off valve kit to fit on to my 135i a few months ago thinking it would fit because it was the same engine. I tried to install it yesterday and the intake pipe that goes connected to the throttle body is totally different in the 135i. Thus, the 335i blow off valve kits will not work on the 135i. Vendors please get to work on a kit for the 135i. Thanks in advance!

Thanks for being our guinea pig!

Jockey · 03-23-2008, 10:31 PM

Quote:

Originally Posted by eunosracr

The n54 runs a MAF sensor not a MAP sensor so venting to atmosphere does not cause it to run richer or trigger cel lights. I will probably end up running Forged dV's. We will see.

except that the air is metered well before the BOV so you're venting off excess air the ECU thinks is there but isn't...

unless you're running alot more boost over stock, BOVs are just about bling

eunosracr · 03-23-2008, 10:31 PM

Quote:

Originally Posted by Tuned1

Thanks for being our guinea pig!

Ha my pleasure.

eunosracr · 03-23-2008, 10:33 PM

Quote:

Originally Posted by Jockey

except that the air is metered well before the BOV so you're venting off excess air the ECU thinks is there but isn't...

unless you're running alot more boost over stock, BOVs are just about bling

Would you consider twice as much boost as stock alot?

Jockey · 03-23-2008, 10:38 PM

Quote:

Originally Posted by eunosracr

Would you consider twice as much boost as stock alot?

depends, 3 to 6 psi, no ; 15 to 30, yes

nonetheless, if the stock one can hold that pressure, then it's a waste

but if it can't, then it's worthwhile

eunosracr · 03-23-2008, 10:44 PM

I'm running 14.5 right now so I guess im borderline....

sndprssr · 03-23-2008, 10:44 PM

Quote:

Originally Posted by eunosracr

The n54 runs a MAF sensor not a MAP sensor so venting to atmosphere does not cause it to run richer or trigger cel lights. I will probably end up running Forged dV's. We will see.

You have that backwards, it runs a MAP snesor not a MAF sensor and you wouldn't have to sell the BOV, just route the vent back into the intake instead of buying a diverter valve seeing as how they are basically the same thing.

eunosracr · 03-23-2008, 10:45 PM

Quote:

Originally Posted by sndprssr

You have that backwards, it runs a MAP snesor not a MAF sensor and you wouldn't have to sell the BOV, just route the vent back into the intake instead of buying a diverter valve seeing as how they are basically the same thing.

I stand corrected thanks. Im selling because the pipe for the 335i intake is totally different than the one for the 135i. So the current BOV kits wont work.

sndprssr · 03-23-2008, 10:50 PM

Quote:

Originally Posted by Jockey

except that the air is metered well before the BOV so you're venting off excess air the ECU thinks is there but isn't...

unless you're running alot more boost over stock, BOVs are just about bling

The air is also metered AFTER the BOV, in the manifold, hence the Manifold Absolute Pressure (MAP) sensor so the ECU doesn't think the vented air is there.

03-23-2008, 01:05 PM	#1
eunosracr Colonel 157 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	Heads up on blow off valves on the 135i AFTER TEST FITTING WE FOUND OUT THE UR BOV FITS!! I HAVE IT INSTALLED AND IT WORKS GREAT!!!! I bought the UR 335i blow off valve kit to fit on to my 135i a few months ago thinking it would fit because it was the same engine. I tried to install it yesterday and the intake pipe that goes connected to the throttle body is totally different in the 135i. Thus, the 335i blow off valve kits will not work on the 135i. Vendors please get to work on a kit for the 135i. Thanks in advance!
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03-23-2008, 01:55 PM	#2
Mikebuzzsaw Enlisted Member 7 Rep 41 Posts Drives: Alpinewhite BMW e46 M3 Join Date: Aug 2007 Location: Los Angeles, CA iTrader: (0)	Thats good. Sell the BOV and never buy one again. :thumbup:
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03-23-2008, 02:11 PM	#3
eunosracr Colonel 157 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	I have it up for sale. I need a BOV or Forged DV because I have read the stock plastic ones are good for only up to 12lbs of boost. Let's just say Im running a bit more than that bwahahaha.
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03-23-2008, 02:17 PM	#4
dim135 Private 0 Rep 56 Posts Drives: bmw 135 Join Date: Mar 2008 Location: greece iTrader: (1)	forge DVs
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03-23-2008, 05:08 PM	#6
coco_m3 Brigadier General 166 Rep 4,311 Posts Drives: Supercharged E90 M3 Join Date: Mar 2008 Location: SL,UT iTrader: (1) Garage List 2008 BMW M3 [0.00] 2010 BMW E90 335i [0.00]	buy AA's! and post pics so i know if i want it... __________________
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03-23-2008, 07:09 PM	#11
mtla4 Lieutenant Colonel 42 Rep 1,756 Posts Drives: Turbo Festiva Join Date: Mar 2008 Location: Montreal iTrader: (2)	Sell the Bov as someone said get a Dv. As an Audi Guy I can understand that you want some PSSHHHITTTT sound but you'll probably end up running richer and throwing CEL. Stay with Dv or if you want some sound a CAI will help. Worst case scenario an hybrid BOV(on 1.8t 80% recirculated-20% air) or twin piston like the forge 004.The turkey sound is annoying some how. Dv for me this time
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03-23-2008, 07:24 PM	#12
eunosracr Colonel 157 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	The n54 runs a MAF sensor not a MAP sensor so venting to atmosphere does not cause it to run richer or trigger cel lights. I will probably end up running Forged dV's. We will see.
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03-23-2008, 10:44 PM	#19
eunosracr Colonel 157 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	I'm running 14.5 right now so I guess im borderline....
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