Linfert Performance

09/29/2026

Continuing "Why Axiom"....
Let's talk about alternator control.

Computer controlled alternators can have one of several different control methods.
Some like Miatas have a high current power transistor built into the alternator to control the field and the ECU controls the transistor.
Others (Ford and Chrysler notably) leave the transistor in the ECU and control the field's grounding.
European vehicles often use LIN for control. Not much support in the aftermarket.

Most ECU's can control an alternator but require a custom PWM table and a PID loop to tune.

Not Axiom. It's MUCH easier.
First determine if the alternator has a control transistor or not.
If yes, use a low current output with the 5V pull-up active.
If no use a high current output and turn on the recirc/flyback control.

Finally use the High Speed Feedback control method and set your target voltages.

Want to turn it off at WOT drag racers? Set the WOT target to 12V

Send a message to learn more

09/24/2026

Why Axiom? (Part 3)

“Oh man just put a Holley Terminator on it!”

Yeah you could. But you’re paying for a name. And dealing with a huge corporation who could care less about you and your project. And putting up with poorly written software, firmware that can take over an hour to update and Chinese built hardware.

Axiom is built in the USA. The software and firmware isn’t written by cubicle dwelling IT nerds who have never been under the hood of a car. Ken, James and Dimitris are all car guys . Support is from people who use Axiom daily. Find a bug? Report it via the support forum (or possibly in Slack) and it WILL get fixed

09/21/2026

Another solid weekend at the track for Axiom.
Selin “Papi” Rollan got another enduro class win in his Axiom 600 powered ITS 99 Miata
And AKT racing won their class in the 2.5L Axiom powered 2007 MX-5.

Way to go people! 💪

09/15/2026

We also have Axiom running on the Toyota 4-AGE and 5VZ-FE

Send a message to learn more

09/15/2026

More Axiom stuff

So far we have installed an Axiom on the following engines.

BMW: M50, M54 and S65

Chrysler: SRT-4 2.4L turbo

Ford: Duratec 2.5 (I-VVT model)

GM: Gen3 and Gen4 LS

Honda: F20C

Mazda: NA8, NB1, NB2, and MZR 2.0

Nissan: KA24DE, L28ET ,VG30DETT

VW: ABA, RD(mechanical injection to EFI converision)

Send a message to learn more

09/08/2026

Let's talk some more about Axiom EFI.

Axiom is a new ECU made by some old friends. Ken Culver and James Murray who wrote the firmware for Megasquirt including MS3 got tired of waiting for MS4 (this is the problem you have when the pie is cut into many pieces. MS ownership is confusing).

So they designed their own system from scratch and started Axiom EFI.

The Axiom 600 is a V8 capable 32 bit ECU designed to compete with Haltech, FuelTech, Maxx ECU, and Link to name a few of the systems out there. It's an extremely powerful system with onboard wideband controllers (2), onboard full bridge servo drivers (4) for DBW, Stepper IAC and EGate control, 2 CAN busses, 2 knock inputs, 2 EGT thermocouples and a boatload of I/O. Servo drivers can be used as high side or low side outputs too! It has a 32GB onboard SD card for datalogging at up to 1000Hz and native USB support no USB/Serial adapter needed.

AxiomEFI Tuner software is free to download and is a compact and fast program with some truly impressive features.
Built in histogram style data log viewer.
Cam/Crank logger
Tach Scope logger
Analog input scope
Wiring Overview
Test Modes
CAN logger

The firmware is also quite impressive and has a number of unique features.
Step method Lambda control. Simple to tune and really works
VVT base angle auto detect
1 button ANY drive by wire throttle calibration.
Engine saving safeties for Lambda, Oil pressure, Fuel Pressure and EGT.

The Axiom 600 retails for $2100
A PnP adapter is available that will work with 90-00 Miatas and many other Japanese cars from the 90's and early 00's (Denso N76 connector)

Installed and tuned systems start at $3500

09/07/2026

Congratulations to AKT Racing P1 in class P4 overall at the Sebring Labor Day enduro. This was the first race since an Axiom 600 was installed and tuned!

Also a big shout out to Selin Rollan P1 in class in both the enduro and the feature sprint race. Selin has been killing it in his Axiom powered ITS Miata for over a year now!

09/04/2026

Just a reminder to everyone.
Linfert Performance has a Mustang MD 500 chassis dyno available.
I tune Megasquirt and AxiomEFI systems primarily but you can bring your own tuner or remote a tuner in. Good WiFi is available for remote tuners
Contact me for rates and scheduling

07/29/2026

Finished dynoing the Scirroco. The graph is MS3 vs Axiom 600. The bigger numbers are Axiom.

07/27/2026

Still some tidy up to do inside the car but it runs!