The tuning suite for the Toyota GR86 / Subaru BRZ gen 2.
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Tuning Guide
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Recovery
Tuning Tips
P0606 Fault code under acceleration
As far as we understand at the moment this code is triggered by some form of torque and throttle plausibility check. It can be disabled using the map currently named "m1d_3752a". By default it is set to 90 in most of the ROMs we have seen. Setting it to 0 worked to prevent this code coming up in a number of calibrations during testing.
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Fueling going lean under boost at higher RPM
On cars with turbo / supercharger conversions you can max out the factory load limits. This will cause the fuelling to lean out as it imposes an artificially low cap on the amount of fuel that can be delivered. We have found a couple of ways to address this:
Raise the “DI Quantity Max Allowed” map. This will allow more fuel to be pushed through the DI system at higher RPM where the cam driven pump has spare capacity.
Raise the “Engine load limit 1 & 2” maps. These appear to be the ceiling value for the calculated engine load from which the fuelling requirements are calculated.
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Introduction
This document is a work in progress!
For the most part tuning a second generation BRZ or GR86 is very similar to tuning the original BRZ and family of related models.
Fitting Omni 3 bar MAP sensor
We have managed to get our car here to start, idle, run & drive with no P0107 error using the following changes when using a 3 bar map sensor. This was using an OmniPower branded 3 bar map sensor just as we have fitted and used on our supercharged Gen1 car for years.
The following maps needed to be changed:
This differences file should do most of the hard work for you but if you are using a different brand of sensor you need to check the values are correct. Keep in mind the ECU for the 2nd Gen FA24 cars uses different pressure units to the 1st Gen FA20 cars so some unit conversion may be needed to get it to work correctly.
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Table of contents
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