Committed to deliver precision and engineered performance.
The Bimtech Team delivers top-quality automotive repair services across the greater Seattle area. From routine maintenance and major repairs to high-performance upgrades, bolt-on parts, carbon fiber installations, and custom builds—whatever you need, we’ve got you covered.
Professional Services Offered
Expert Engine Diagnostics
At Bimtech PNW LLC, we specialize in comprehensive engine diagnostics to identify issues quickly and accurately. Our skilled technicians use advanced tools and technology to assess the performance of your vehicle's engine, ensuring your car runs smoothly. Trust us to provide thorough inspections and reliable solutions tailored to your needs.
S55/N55/N54 Crank Hub Upgrade
The crank hub upgrade replaces your stock crank hub with a keyed unit, providing a safer solution for increasing engine horsepower. This upgrade completely reduces the risk of crank hub slippage, preventing irreversible engine damage . A must have for high HP applications.
N54 /S58/ B58 / S55 Performance Modifications
Rod Bearing Replacement (N54 /N55/ S65/S63[TU])
We are honored to collaborate with exceptional vendors who help us deliver top-tier performance to our customers. Over the years, we have gained extensive experience with all major BMW platforms. Whatever it is, we've handled it
Rod Bearing Replacement (N54 /N55/ S65/S63[TU])
Walnut Blast in the Seattle Area (N54/N55/S55)
Rod Bearing Replacement (N54 /N55/ S65/S63[TU])
Rod bearings are a component that experiences wear throughout the engine's lifespan. Depending on the engine's history and driving style, engines that are mid-life or have over 100,000 miles typically exhibit rod bearing wear that exceeds standard thresholds.
MOSFET DME Replacement
Walnut Blast in the Seattle Area (N54/N55/S55)
Walnut Blast in the Seattle Area (N54/N55/S55)
Experiencing constant misfires? You may be facing DME issues.
Relevant error messages:
- 30BA: DME Digital Motor Electronics, Internal Failure
- 30BB: DME Digital Motor Electronics, Internal Failu
Walnut Blast in the Seattle Area (N54/N55/S55)
Walnut Blast in the Seattle Area (N54/N55/S55)
Walnut Blast in the Seattle Area (N54/N55/S55)
BMW N54/N55 inline 6-cylinder twin-turbocharged engines, found in many of BMW's production vehicles, are prone to carbon buildup on the intake valves due to its direct injection system. The combination of positive crankcase pressure and a typical crankcase ventilation system, when paired with direct injection technology, leaves the intake valves vulnerable to oil accumulation on their backs and valve stems.
N54 walnut blast
N55 walnut blast
S55 walnut blast
BMW N54 Maintenance
B58/ S55/ N54/N55 Injector Replacement, Coding
A functional injector is just the starting point for achieving top-tier performance. Proper atomization and flow are crucial for reaching your high horsepower goals. We provide replacement, coding, and thorough injector testing and cleaning services to ensure optimal performance.
BMW N54 performance and maintenance
Valve Cover and Gasket Replacement N54/N55/S55/B58
BMW engine are powerful and tuner friendly engines - however, they are not without fault. As you now probably know the valve cover is one of the weak points in your engine. We recommend you replace your valve cover with a fresh, Genuine BMW valve cover when you start to see oil seeping out of your valve cover gasket. Often times, these plastic valve covers crack and cause a myriad of running issues. In cases where the PCV is integrated into the engine cover, replacement is necessary when increasing boost pressure.
BMW N54 Maintenance
B58/S58/N54/N55 Downpipes and Exhaust
BMW N55 / N54 / B58 / S58 Oil Pan Gasket
Downpipes remove the restrictive OEM converters, enabling exhaust to flow more freely and resulting in higher power and torque output. Since increased boost levels generate more heat, cat less downpipes allow your performance vehicle to run at higher boost settings.
BMW N54 Performance
Road Course Use ONLY
BMW N55 / N54 / B58 / S58 Oil Pan Gasket
BMW N55 / N54 / B58 / S58 Oil Pan Gasket
Oil pan gaskets are a common source of leaks in any engine and typically start leaking after a few years.
Note: It is also required to replace the oil pan screws once they have been removed.
Water Pump and Thermostat Replacement
Ensuring the proper operation of your thermostat and water pump is essential for keeping your engine cool and running efficiently. This is extremely important on High Horse Power Applications.
DME Femto Unlock B58 / S58
BMW Bosch ECUs/DMEs produced after June 2020 are factory-locked and cannot be tuned. We provide a solution to unlock these ECUs/DMEs for tuning purposes.
Turnaround time from day received is 7-14 business days.
We an unlocked Pre June DME / One day turn around.
High Pressure Fuel Pump Upgrade/Replacement
High-pressure fuel pumps, commonly known as HPFPs, are a frequent issue in N54-powered BMWs. A failing HPFP can lead your car to enter limp mode, and in severe cases, it may leave you stranded on the roadside. BMW has redesigned and re-engineered this component several times due to reliability concern .
BMW N54 Maintenance
N54 /N55/ B58 Oil Filter Housing Gasket Replacement
If you own a BMW with an N52, N52N, N54 or B58 engine, it's almost guaranteed that you'll need to replace the oil filter housing gasket seal at some point. This soft rubber seal sits in the filter housing and creates a seal with the engine block. Over time, due to exposure to heat and oil, the seal can harden, shrink, and eventually fail. This often leads to an oil puddle forming underneath your vehicle, originating from the oil filter housing.
BMW N54 Maintenance
Low Pressure Fuel Pump Upgrade
If your BMW has no fuel pressure at the fuel rail it could be due to a faulty fuel pump. This fuel pump and sender assembly is located in the right side of your BMW's fuel tank and provides fuel flow for the engine. With age the electric pump can stop working.
Aux and Stand-alone Fuel Systems
If you are running E85 or if you are making more power on pump gas than your HPFP (High Pressure Fuel Pump) can support? We recommend you install supplement fueling kit of your choice.
Charge pipe Water/methanol injection: provides you the means for effectively reducing engine inlet air temperatures and suppressing harmful detonation.
Port injection is a kit that is installed between your intake manifold and the cylinder head to provide you with more fueling than your stock system is capable of.
Clutch Replacement
If your Stock Clutch is worn down or if you are making big power and your clutch is slipping, or the engagement isn't what it used to be, it's time for a replacement. Slipping clutches won't allow your BMW to accelerate properly and can pose problems under a load such as going up large inclines. Also, a worn clutch can cause less precise and engaging shifts. By replacing your clutch you will restore performance and driving pleasure.
Boost Controller / Reflex Installation
The ReFlex+ is an advanced integration module that allows control of auxiliary components through a variety of control strategies.
- Standalone - no CanBUS communication
- Integrated CanBUS - MHD, BM3, MGF
- Advanced CanBUS - EcuTek and MHD+
The ReFlex+ provides the most accurate and precise supplementary sequential fuel injection and has the ability to control other advanced features all in one place
Transmission Services
Heat and friction generated in the transmission through the car’s normal and regular operation can result in damage in any of your transmissions components. Many repair issues related to the transmission can develop over time. Keeping up with Transmission Maintenance can offset or delay these issues from developing.
Aftermarket Suspension
Improve the vehicles handling , responsiveness and stability by upgrading your factoring suspension components. Weather its a simple spring kit or a full on coil over kit. We have you covered.
Big Brake Kits
Big Brake Kits
Improve your vehicles stopping distance , increase heat Dissipation and enhance pedal feel. We offer installation of all types of Big Brake systems, both street and track.
Tranmission Upgrades
Improve Performance by upgrading your transmission. Cant go anywhere if you cant put the power down. Transmission upgrades are a must for ALL high horsepower applications.
Tire Mount and Balance
We offer tire mounting and balancing services with meticulous attention to aftermarket wheels and components. Don settle for a typical tire installation shop - chose us for superior care and expertise..
Don't compromise on safety; visit us for your Tire Mount and Balance Service today.
Exhaust System Upgrades
Exhaust System Upgrades
Improve Exhaust Flow and create more power, All while enhancing sound dynamics , increasing fuel efficiency and Improve esthetic appeal.
Turbo Upgrades
B58/S58 Turbo Upgrade
B58/S58 Turbo Upgrade
Number 1 resource for B58 turbo replacement in Seattle area .
If you are in the search for more power, let us help.
340i / 240i / 440i
N55/S55 Turbo Upgrade
B58/S58 Turbo Upgrade
If you are looking to squeeze more power out of your N55 platform, let us know how we can help.
N54 Turbocharger Replacement/ Upgrade
N54 Turbocharger Replacement/ Upgrade
We offer turbocharger replacements, either a remanufactured Genuine BMW Mitsubishi Turbo, or aftermarket upgraded turbochargers if you are looking to take your BMW N54 to the next level. Upgraded Turbochargers can produce 500-700 whp depending on supporting mods.
If you need stock or aftermarket Turbocharger Replacement services, send us a message and we can make provide you with a turn key solution tailored to your needs.