Overland Tailor Tuning (OTT) - 4G Tacoma Development

[JustDSM]

We know many of you have been eagerly reaching out about the latest developments for your 4th Gen Tacomas, and we appreciate your enthusiasm! While we’re still fine-tuning a few elements and conducting essential tests before our official release, we couldn't resist giving you a sneak peek at what’s coming.

With the OTT Beta calibration and premium fuel, the 2024 Tacoma is poised to deliver like no previous Tacoma. Stay tuned—we’re committed to bringing you the performance and capability that the Tacoma enthusiast craves!

With that said, I think it's only fair to give you guys a sneak peek of what you might expect from OTT on the 4G Tacoma:

RED - Unmodified 2024 Tacoma, as delivered from the dealer
BLUE - Above, but the addition of an OTT Beta calibration on premium fuel.

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[Gurvy522]

Was this on 91 or 93?

You guys planning on playing around with E85 at all, or are the injectors pretty maxed out?

 

[JustDSM]

Was this on 91 or 93?

You guys planning on playing around with E85 at all, or are the injectors pretty maxed out?

This was on 91 Octane.

We certainly appreciate the benefits of E85, but it’s important to note the Tacoma is not equipped with flex-fuel capabilities. This means it lacks the ability to automatically adjust fueling based on the varying ethanol content found at E85 pumps, which can range significantly from 51% to 83% ethanol. To run pump E85 safely, you'd have to measure the ethanol content of each pump at the time of fill up and do the the requisite math to calculate the final ethanol content of the tank assuming the blend was a different mixture in the previous fill-up.

In our opinion to do it properly and safely, it's too much hassle for the end user.

However, the system would have sufficient headroom for injector capacity to accommodate the additional duty cycle required for E85.

 

[Gurvy522]

Nice numbers for 91. Maybe once the warranty is up, I'll take the plunge. Is this done via ECU flash or piggyback?

 

[JustDSM]

Nice numbers for 91. Maybe once the warranty is up, I'll take the plunge. Is this done via ECU flash or piggyback?

ECU Reflash.

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