Studie AG demo car; Wagner intercooler, new charge pipes, HKS blow-off valve, Mosselman oil thermostat, lowered adaptive Bilstein B16, Brembo big brake kit, 3D Design body kit, BMW style 163M (E46 M3 CSL design) wheels, Recaro Sportster seats
Fitted by
PSR Parts workshop, Woerden
Photos
PSR Parts
The Story
This Le Mans Blue BMW E91 335i Touring is not just another 3 Series estate. The 2007 335i Touring M Sport started life in Japan as a demo car for the Japanese BMW tuner Studie AG, was imported to the Netherlands in 2022 and has been built as a tribute to the E91 M3 Touring that BMW never made. Dutch car site [Autoblog](https://www.autoblog.nl/nieuws/smaakvolle-bmw-e91-van-autoblog-lezer-kan-van-jou-zijn-6932691) featured this car twice.
Under the bonnet sits the N54 3.0 litre twin-turbo straight six. From the factory it makes 306 hp. With a Stage 2 tune it now produces approx. 420 hp and 650 Nm. To support that power reliably, the engine received a Wagner intercooler, new charge pipes, an HKS blow-off valve and a Mosselman oil thermostat. Power goes through the ZF six-speed automatic gearbox.
The Studie AG chassis work is just as important as the power. The car is lowered on an adaptive Bilstein B16 setup, so ride height and damping are tuned for the road while still giving firm body control. A Brembo big brake kit handles the extra performance. The 3D Design body kit and BMW style 163M wheels, the design used on the legendary E46 M3 CSL, give the Touring the purposeful M3 look it was built for. Inside, Recaro Sportster seats complete the package.
There was one thing that spoiled long drives: an annoying drone from the exhaust at constant motorway speeds. That is exactly where our part came in. At the PSR Parts workshop in Woerden we fitted a DCE Parts valved axleback for the BMW E90 E91 E92 E93 335i with chrome quad tips. The valvetronic rear silencer gives this E91 335i two characters. With the valves closed, the exhaust stays quiet and drone-free when cruising, which makes the car much more comfortable on longer trips. With the valves open, the full sound of the N54 twin-turbo engine comes through, deep and aggressive, exactly what a car with this much character deserves. The chrome quad tips sit neatly in the rear bumper and match the M3-inspired styling.
The DCE axleback bolts on in place of the original rear silencer and works with the rest of the exhaust system. It is a smart upgrade for anyone with an N54 or N55 335i who wants more sound without giving up comfort on the motorway. Watch our videos on this page to hear the difference between valves open and valves closed.
Looking for a BMW E91 335i axleback, an E90 335i valvetronic exhaust or a DCE catback for your E9x? PSR Parts supplies the complete DCE valvetronic exhaust range. Order online or book your 335i into our workshop in Woerden and we will fit it for you.
DCE Parts ships from the Netherlands (EU). For orders to {land} we charge 0% VAT. Import duties, local taxes and customs clearance fees are not included. They are charged by the carrier or customs on delivery and are payable by you.
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