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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old Yesterday, 01:48 PM
Clewis Clewis is offline
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Location: Atlanta
Join Date: Jun 2004
Posts: 65
Mein Auto: 04 330i ZHP
Catch Can Installation

After my last experience with CVV replacement, I decided to try the catch can route.

I went with the Radium unit because of the look and quality of the piece, with a PVC345 pcv valve from O'Reilly's.

The only real problem I encountered with the install is the fact that they only supply a single 6' length of hose. That's enough for one of the required runs, but not both.

Otherwise, it wasn't difficult, just time consuming.

In my case, though, it has been well worth the effort and expense.

The last CVV (brand new, OEM) degraded my oil consumption from an already ridiculous 800 mile/quart to 400 miles/quart.

I have logged somewhere between 400 and 500 miles so far. This includes a tear across Blood Mountain with no mercy: uphill runs full throttle at 3-5k rpm, multiple redline shifts, downhill braking at 3-4k rpm.

Today the oil level is STILL at the full mark!!!!

There is that notch in the dipstick, so it's possible that it has used a little bit and I just can't tell yet. Dunno.

BUT, it is a VAST improvement over what I have had over the last 50k miles.

AND, there seems to be an improvement in gas mileage as well. I have owned this car since new, and with my heavy right foot, I have NEVER seen anything over 22 mpg on the dash readout. Today, despite the deliberate leadfoot driving it reads 23.5.

There have been NO CELs either, and it's running great.

The last photo shows the crap in the can since the installation. Better than in the intake or oil sump, no?

Win, win!
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ZHP/Cold Weather Package/Michelin PSS
Clearbra, Factory clear lenses, Umnitza Predator V2, CDV delete, Whalen shift knob, clutch stop, //M pedals, black kidney grilles, Lightwerks rebuild, CVV delete/Radium catch can
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Old Yesterday, 02:13 PM
Fast Bob's Avatar
Fast Bob Fast Bob is online now
Keeping it surreal
Location: Here, there, everywhere....
Join Date: Jun 2004
Posts: 34,542
Mein Auto: 2004 330Ci ZHP 3 pedals
Excellent report....thanks for the update !

Please file periodic updates so we can follow this situation....
The road goes ever onward....
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When faced with choosing between two evils, always go with the one you`ve never tried before....
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Old Yesterday, 02:48 PM
Rob43 Rob43 is offline
Hates Low RPM !
Location: Richmond VA
Join Date: Sep 2011
Posts: 31
Mein Auto: 03 331Ci, 5spd
OP, very nice work.

There's also a big thread going right now about this in our "sister" forum, E46Fanatics.


Again nice work,

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