BMW 135I 335I Turbo Upgrade N54

335i twin turbo Upgrade N54 2At Turbo Lab We offer a 335I Turbo Upgrade, that includes a simple 39.6 x 56mm billet wheel and 9 Blade Turbine Wheels. 


Here Are Some of the Popular BMW 135i 335i Turbo Upgrade Options:

Turbo Lab:  39.6mm x 56mm CW + 9 blade Drop in Turbine 35mm x 40 TW $1050 (tdo3) (includes turbo rebuild, repair of wastegates, larger compressor wheels, and balancing)

If you Just want the rebuild service, or wastegate repair service without the upgrade. We do offer the individual services below:

Wastegate flapper repair including parts: $300 (Both Turbine Housings). Turbo Rebuild $350 (Both Turbos).  (Basically if you just want the rebuild without the upgrade,  the cost of the repair is 650$.)

Our Upgrade Adds 47 Horsepower over Stock With Other Modifications The Upgrade is Good for Up to 550HP!

RB Turbos : 41 x 56 Comp Wheel  41 x 45mm Turbine Wheel (tdo4) $2999

Vargas Turbos 47mm x 58mm Comp Wheel 45 x 50mm Turbine Wheel (tdo4)(20t) $3799

Dinan Turbo Upgrade  (Similar as Turbo Lab) $1599

Details On The HEXON Turbo Upgrades: (Discontinued)

Compressor Wheel:

42.9mm x 56mm Billet Compressor Wheel

Turbine Wheel (Exhuast Side)

41mm x 44mm 9 Blade

TDO3 N54 twin turbo Upgrade


Here is the Process of the Turbo Lab Upgrade that we do for $1050. This includes machining the compressor housings, bearing housings, the billet wheels, clipping and rebalancing for both turbochargers.



12 thoughts on “BMW 135I 335I Turbo Upgrade N54

  1. Randy

    I have a 2009 BMW 535I. I was watching one of the YouTube videos and I was curious of the cost to rebuild the both of mine and the turn around time ? I would also like to know how much more it would cost to upgrade ?
    Thank you Randy

    1. Austin Post author

      We rebuild them with the Wastegate repair for 650$. Usually it takes 1-2 weeks also have cores on hand, but I’m out of the 5 series rear Turbo right now. I will try to find another one.

    1. Austin Post author

      We currently cannot do that, because I don’t have a machine to machine the exhaust housings,

      1. Steven

        Just put the turbos in and man the feel and sound great and I like how they do business my core refund was returned in a timely manner thanks turbo lad


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