Question 1

Do you only work on BMWs?

Accepted Answer

Nope. BMWs are a big part of what we do, but we work on plenty of other cars — Mercedes, VW, Porsche, and classic American stuff included.

Question 2

What kind of projects do you like best?

Accepted Answer

Mechanical problem-solving. Swaps, electrical issues, half-finished builds, and cars that other shops don't want to touch.

Question 3

Do you take on unfinished or abandoned projects?

Accepted Answer

Yes — as long as expectations are realistic. We'll assess what's there, what's missing, and what it'll take to get it running properly.

Question 4

Can you fix work done by another shop?

Accepted Answer

We do it all the time. That said, correcting someone else's mistakes often takes longer than starting fresh. We'll be upfront about that.

Question 5

Do you work on daily drivers?

Accepted Answer

Yes, but we specialize more in enthusiast and project cars. If your daily has a weird issue that keeps coming back, we can usually help.

Question 6

Do you do full engine swaps?

Accepted Answer

Yes. From mechanical fitment to wiring, ECU setup, cooling, and driveline work. We aim to make swaps feel factory-finished.

Question 7

Do you tune ECUs?

Accepted Answer

We handle setup, configuration, and integration. For custom dyno tuning, we outsource that to a trusted tuner.

Question 8

Do you install customer-supplied parts?

Accepted Answer

Yes, but we'll inspect them first. If a part isn't compatible or is low quality, we'll say so before it causes problems.

Question 9

Do you fabricate parts in-house?

Accepted Answer

Light fabrication, brackets, mounts, and problem-solving pieces — yes. We also make several products in-house for sale.

Question 10

Can you help plan a build?

Accepted Answer

Absolutely. If you're in the planning stage, we can help you avoid costly mistakes before parts start piling up.

Question 11

What is MAFsync?

Accepted Answer

MAFsync is an airflow meter translator module. It sits between a modern hot-wire MAF sensor and your factory ECU, precisely translating the modern sensor's signal into the exact voltage curve your ECU expects. The result is a clean, stable idle, improved throttle response, and proper fueling — all without touching the ECU or reflashing anything.

Question 12

Does MAFsync only work on BMWs?

Accepted Answer

No. Ready-to-ship profiles are for BMW M20, M40, M42 and M43 engines, but MAFsync works with any car that uses the same kind of vane (flap) airflow meter, such as Bosch L-Jetronic and Motronic systems found on many 80s and 90s Porsche, Volvo, VW, Nissan and Toyota models. A profile for your engine can be built using the MAFSync DataLogger Kit. Send your engine and ECU details to confirm it's a fit.

Question 13

Why would I need this?

Accepted Answer

Original mechanical vane-type airflow meters (AFMs) are bulky, restrictive, and increasingly hard to find. Even working original units can eventually develop track wear and dead spots. MAFsync lets you replace that older technology with a modern, reliable hot-wire MAF sensor to future-proof your engine.

Question 14

Does it modify or reflash my ECU?

Accepted Answer

No. MAFsync works inline — it plugs directly in between the sensor and the ECU. The factory ECU itself is never touched, modified, or reflashed. This makes the upgrade fully reversible: unplug it, reinstall your original AFM, and the car is entirely back to stock.

Question 15

Will it throw codes or cause a check engine light?

Accepted Answer

No — because MAFsync translates the signal perfectly, the ECU sees exactly what it expects to see. There are no additional codes introduced by MAFsync itself. If codes are present after installation, they are likely pre-existing engine faults.

Question 16

Do I still need a tune after installing MAFsync?

Accepted Answer

No. Each unit is pre-loaded and locked with a calibration profile specific to your exact engine and ECU combination before it ships. You do not need a dyno tune, ECU reflash, or any calibration adjustments on your end. It is truly plug-and-play.

Question 17

Which engines does it support right now?

Accepted Answer

Fully supported and ready to order now: BMW M42B18, M40B18, M43B18 (7-pin 4-cylinder platforms) and M20B25, M20B27, M20B20 (5-pin 6-cylinder platforms). The M30 and M10 are in active development. Don't see your engine? Sign up on the MAFSync page and we'll email you as soon as a profile for it is ready — or use the MAFSync DataLogger Kit to log your engine so we can build a profile for it.

Question 18

What MAF sensor does it use?

Accepted Answer

The Full Kit ($379) includes a pre-matched Bosch hot-wire MAF sensor, calibrated precisely for that exact sensor's flow characteristics. The Module + Harness option ($295) does not include the sensor — you'll need your own Bosch 1.8T HFM5 (70mm), part 06A906461A / Bosch 0280218002. Using a different sensor than what the module is calibrated for will affect accuracy and isn't recommended.

Question 19

Is this street legal?

Accepted Answer

As with any engine management modification (such as popular MAF conversions for Porsche and other classic platforms), emissions compliance depends entirely on your local and provincial/state laws. MAFsync is a performance module and has not been CARB-certified or submitted for federal emissions testing. It is the buyer's responsibility to verify legality and ensure compliance with their local regulations before installation.

Question 20

How long does it take to ship?

Accepted Answer

Every unit is built to order — please allow up to 30 days, plus transit time. Each one is hand-assembled, flashed, and bench-tested before it leaves our shop. You'll get a shipping notification with tracking the moment your unit is on its way.

Question 21

My engine isn't on the list — can you build one for it?

Accepted Answer

Possibly! If your ECU uses a similar vane AFM signal architecture, it may be supportable. Reach out with your engine and ECU details before ordering and we'll let you know if it's possible. If it's not currently supported, we'll add your platform to our development list.

Question 22

How do I start a project with you?

Accepted Answer

Send us a message with details about your car, goals, and current condition. Photos help a lot.

Question 23

Do you provide estimates?

Accepted Answer

Yes — realistic ones. Custom work can change as we dig in, but we'll always communicate before moving forward.

Question 24

Do you require a deposit?

Accepted Answer

For larger projects, yes. This secures shop time and parts ordering.

Question 25

Can I check in on my build?

Accepted Answer

Of course. We keep communication open and are happy to give updates as work progresses.

Question 26

What if I don't know exactly what I want?

Accepted Answer

That's fine. Part of our job is helping you figure out the best path based on budget, goals, and how you want to use the car.

Frequently Asked Questions

MAFsync