N54 BOV Upgrade

BMW N54 ChargePipe & BOV Upgrade Guide

About Zach Mayock - DieselIQ

Meet Zach

Zach is a BMW enthusiast with a passion for performance. With over 10 years of experience modifying and performing DIY work on BMWs, he’s developed a deep understanding of virtually every BMW engine. He’s also the proud owner of a 600whp N54 with upgraded twin turbos and an E30 325i drift car and has a particular affinity for the S58 engine. Zach is highly knowledgeable about all things BMW, but his expertise in tuning and performance mods sets him apart. His experience as an enthusiast, combined with his technical knowledge, makes him an essential resource for anyone looking to improve the performance of their BMW.

A charge pipe (CP) is an excellent early mod to knock out on your BMW N54. It’s not so much for the performance benefit as it is for the peace of mind. The stock N54 CP is plastic and is prone to cracking under higher than stock boost. Chargepipe upgrades also allow the option to upgrade to a blow-off valve (BOV) rather than the stock diverter valves (DV). In this guide, we’ll discuss the benefits to N54 CP and BOV upgrades and list a few of the best options available.

VRSF N54 Chargepipe Upgrade

Why Upgrade Your N54 Charge Pipe?

We gave part of this away in the intro. However, there are a few reasons to consider upgrading your N54 charge pipe and switch to a BOV:

  • Reliability
  • BOV sounds
  • Easy install
  • Charge pipe injection (fuel or WMI)

Again, the stock N54 charge pipe can give out due to its plastic design. Some have even blown their CP’s on stock boost, though it’s unlikely. Our N54’s ran 16-19 psi on stock charge pipes and diverter valves for years without issue. However, we finally opted for upgraded charge pipes and BOV’s on our 135i and 335i. Boy were we disappointed we didn’t do it sooner. The N54 BOV sound is intoxicating and it’s definitely a head turner. Install is pretty straight-forward and even novice DIY’ers can knock out the install with a bit of patience.

Charge pipe and blow-off valve upgrades also aren’t too expensive. Charge pipes usually run about $150 and blow-off valves come in around $250. Not too bad of a price to add some exciting sounds and peace of mind that the stock CP won’t leave you stranded. They also come equipped with 1/8″ NPT bungs for water-methanol or fuel injection.

N54 Diverter Valves vs Blow-off Valves

The cheap route is opting for a metal charge pipe and sticking with the stock diverter valves. However, as the N54 ages DV failure is also a possible occurrence. If you don’t want the classic BOV sounds we recommend at least upgrading the stock DV’s. Diverter valves recirculate the air which keeps sounds quiet. New or upgraded N54 diverter valves will ensure a reliable setup without the BOV sounds.

Other than sound there isn’t a huge difference between an N54 BOV or DV. They accomplish the same goal in relieving the intact tract of charged (pressurized) air when the throttle closes. A blow-off valve simply vents to the atmosphere producing the classic “pssshhhht” sound.

Best N54 BOV & DV Upgrades

N54 Blow Off Valve

That’s really all there is to charge pipes and blow-off valves on the N54. As such, we’ll move onto a few of the best options on the market. Before we discuss the charge pipe upgrades we’ll lay out some of the best options for N54 BOV and DV upgrades:

  • TiAL BOV
  • Turbosmart GenV BOV
  • Turbosmart Kompact Plumb Back Kit (DV’s)

These are all great options from well-known companies. If you’re opting for a BOV then check out some videos and see which one sounds the best in your opinion. There’s no right or wrong answer. For N54 DV’s, other great options exist but we recommend the Turbosmart kit.

*TiAL is probably the most common option for the N54. Our 335i runs a TiAL BOV while the 135i uses the HKS BOV. In our opinion, the N54 TiAL BOV offers the best sounds. It was also easier to install than the HKS. However, that’s just our opinion and everyone has different preferences.

Best N54 Charge Pipe Upgrades

Alright, we wanted to touch on N54 BOV’s first since each charge pipe may be a bit different dependent upon the brand of BOV or DV you want. Some of them use different flanges, so it’s important you’re buying stuff that fits properly. You’ll also want to ensure it’s a metal charge pipe with one or two 1/8″ NPT bungs for methanol or fuel injection down the road. Let’s dive into a few of our favorite N54 charge pipe upgrades.

1) VRSF N54 Charge Pipe Upgrade

BOV Options: TiAL, HKS, Turbosmart

DV Options: Turbosmart

It’s always easy to include VRSF when it comes to the best BMW bolt-on mods. VRSF offers excellent products for great prices, and the N54 charge pipes and blow-off valves are no exception. The VRSF N54 CP is aluminum powder-coated black. Our N54 135i and 335i are both running charge pipes from VRSF and we can confirm the fitment and quality are excellent. There’s also a lifetime warranty, so it’s tough to go wrong.

Furthermore, VRSF offers a solid selection of BOV and DV options. Pick the charge pipe with the right flange for your BOV and you’re good to go. Our favorite was the TiAL BOV which came in just under $390 with the charge pipe. The VRSF chargepipe includes two 1/8″ NPT bungs.

Buy Here: VRSF N54 Charge Pipe Upgrade

Price: $149.99 – $454.98

2) Masata N54 Chargepipe Upgrade

Masata is our recommended manufacturer for any of our International readers. Their products offer the same quality and attractive price points that we see with VRSF and BMS. Masata’s N54 chargepipe upgrade offers dual meth bungs for WMI.

The only downside to the Masata offering is that their chargepipe is only compatible with the stock diverter valves and cannot fit aftermarket blow off valves. However, this is still a great product for anyone who has busted their stock chargepipes or is simply looking for a more reliable chargepipe.

Price: $225

Buy Here: Masata N54 Chargepipe

3) BMS N54 Charge Pipe Upgrade

BOV Options: TiAL

DV Options: Stock

Burger Motorsports is another company that always makes the list. As with VRSF they offer great products with prices to match. However, compared to VRSF, the BMS N54 BOV options are a bit more limited. They offer an N54 charge pipe with the stock DV flanges. The Turbosmart DV kit will fit the stock flanges, but you’ll need to source the actual Turbosmart kit elsehwere. This also applies to the TiAL BOV flange which will work with Turbosmart BOV’s, but the BOV will need to be sourced separately.

Just like VRSF, the BMS N54 chargepipe is aluminum, includes two 1/8″ NPT bungs, and comes with a lifetime warranty. It’s hard to go wrong with BMS or VRSF products.

Buy Here: BMW N54 BMS Chargepipe Upgrade

Price: $139 – $389

BMW N54 CP & BOV Summary

N54 charge pipes and blow-off valves are pretty basic mods. They help avoid failure of the OE chargepipe and DV valves and BOV upgrades offer intoxicating sounds. Charge pipe upgrades for the N54 also include 1/8″ NPT bungs for WMI or fuel injection. It’s a fairly inexpensive upgrade with several benefits even though they don’t directly improve performance by any notable margin.

VRSF and BMS both make great charge pipes for the N54 with a few BOV/DV flange options. VRSF has a few more options up-front; otherwise, these charge pipes offerings are nearly identical. Great products from great companies at a price that’s more than fair.

What N54 charge pipe and BOV or DV are you running? Which are you considering?

Drop a comment and let us know! Or check out some more of our N54 content just below.

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  1. hi, im thinking about buying a 335i 2008 with 100,000 km but idk if this car is reliable for daily use and for some modifications, because i’ve seen that bmw motors aresensitive and tedious.
    So i wanna know if i should buy it or buy instead a 2015 infity q50 also i want to know what recomendations could u give me or which mods should i do to the 335i (or the q50 if i should pick it)

  2. hi, im thinking about buying a 335i 2008 with 100,000 km but idk if this car is reliable for daily use and for some modifications, because i’ve seen that bmw motors aresensitive and tedious.
    So i wanna know if i should buy it or buy instead a 2015 infity q50 also i want to know what recomendations could u give me or which mods should i do to the 335i (or the q50 if i should pick it)

    1. Hi Juan,

      The N54 can be a little finicky at times. It’s also got a handful of known problems like valve cover leaks, oil filter housing leaks, oil pan gasket leaks, water pump failure (along with plenty of other cooling system parts that break sometimes), fuel injectors, etc. Awesome engine when well maintained and well tuned, though. Plus we really like the older E9x chassis with the good old fashion power steering. I wouldn’t trade my 07 335i for anything. I have a lot of money into it, but it’s seriously an insanely fun car with upgraded turbos and tons of suspension work.

      That said, if you’re concerned about reliability it’s not a great car to own. They can be made reliable but it takes a decent chunk of change to get there. If you plan to lightly mod the car Id go with an MHD or JB4 tune and dual cone intakes to start. You can then add in some other mods like downpipes, FMIC, etc as you go.

      Best Regards,

  3. Hello love the article but I’ve had to do my own research on charge pipes and blow off valves…no one shows love to my 535i twin turbo owners lol its cool it’s a growing community, but to the point, VSRF and BMS charge pipes don’t have to many options for BOV besides the tial BOV I had to get in contact with them you have to do a little remodeling in the engine bay to fit it there’s a reservoir in the way….the only charge pipe I know is Evolution Racewerks the only to offer out of the box for the 535i owners I was saying this so you guys can update the article to include 535i’s as well

    1. Correct thoughts Curtis. I too have an E60 535i that is in a state of “becoming”. I’m considering the BMS charge pipe as I want to retain the stock diverter valves. Already have a set of downpipes….first of all I have to ensure that all the maintenance is up to date….when thats all done i’ll go the JB4 route. I want a 450-500Reliable bhp car for long distance travels. Similar to your thoughts I wish there were more options for the E60’s.

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