Welcome to Built on Purpose!

My name is Aaron and I have keen passion for my modified Datsun 240Z and cars in general.  This webpage contains guides and information to assist you in your own build.

I have a presence on YoutubeInstagram as well as a podcast, Mod Tune Win Repeat. Be sure to subscribe to the newsletter and feel free to reach out for a chat!

Datalog recording of induced low load knock
Knowledge Base
Aaron Neubauer

Knock control tuning

Knock control tuning is important for any modified EFI engine. In this post I explain theory and practical verification of knock control tuning.

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Aaron Neubauer

Ignition coil dwell calibration

Why calibrate ignition coil dwell? I am using a distributor based ignition for my EFI build and ignition coil dwell calibration will help optimise various

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Aaron Neubauer

Megasquirt battery voltage calibration

These days injector behaviour at different voltages is well understood. The speed of opening and amount of fuel delivered vary with voltage. Corrections are made in fuelling calculations to account different performance for differnt voltages at the injector. If what the Megasquirt ECU understands is the voltage at the injector is different in reality, then it is likely fuelling calculations will be incorrect. This is why the battery voltage calibration needs to be correct in your Megasquirt ECU.

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Aaron Neubauer

Manual Idle Air Control

The ITB idle air control conundrum Idle air control is generally a challenge with individual throttle bodies.  This is from the sensitivity of throttle position

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