29/05/2024
💥 TB48DE Ignition Cut Rev Limiter - Custom ECU Code 💥
After a significant investment (A development vehicle, getting that up to speed, a 3rd-party consultant, extra ECUs and a LOT of time), a world first on the 2000-2016 standard ECU, I now offer an ignition cut rev limiter for the standard 2000-2016 TB48DE ECU, available either as a remote service for vehicle owners or as a tool for tuners with unlimited vehicle use.
Flames and bangs require a significant amount of ignition re**rd compared to the ideal values for performance and exhaust gas temperature. A lot of time has been spent minimising the compromises associated with this, however, there is still a short power loss right before the rev limiter between 5150rpm and 5250rpm where the cut takes place. As part of the service, I send datalog recording instructions as a health check but also to determine your rough load value at full throttle just before the rev limiter hits. I can use this data to enable you to have close to full performance just before the limiter hits under loaded full throttle conditions but still get bangs and flames at slightly less than full throttle.
The vehicle will require an exhaust with only straight-through (perforated or louvered core) mufflers and either a very well built 100cpsi high flow cat (eg. HJS) or a decat pipe (for off-road use only of course). Attempting with a chambered muffler, stock cat, cheap cat or any cat denser than 100cpsi will likely end badly for the muffler or cat and potentially cause an exhaust blockage, leading to other issues. Common alternative names are "Megaflow" for perforated core and "Tri-flow" for chambered mufflers. Contact your exhaust manufacturer if unsure.
Ignition cut rev limiter vehicle owner offerings (requires an existing tune):
$300 inc. GST - With a new remote tune.
$400 inc. GST - Tuned by me in the past year, a fuel trim and datalog check and a custom ignition cut rev limiter.
$470 inc. GST - Tuned by me more than a year ago, all of the above plus a more extensive tune revision and update where applicable.
$570 inc. GST - Tuned elsewhere, the above service plus the addition of any worthwhile features such as light load improvements, torque limit and cut improvements or high coolant temp enrichment. Another great option is to ask your original tuner as they may be able to offer this now.
Ignition cut rev limiter tuner offerings (requires Tidy Tuning tuner definition pack):
AUD$700 (approx USD$470) total for the first two firmware groups
AUD$200 (approx USD$135) for each additional firmware group
More info on tuner definition packs and firmware groups here: https://www.facebook.com/tidytuning/posts/122136998036166356
Frequently asked question: Do I need billet oil pump gears for this?
Answer: Nobody knows the answer to exactly why oil pump gears fail, therefore, it's your call. Some say it's high revs, some say it's excessive use of the rev limiter, some say it's just luck. If you treat your vehicle well, allow the oil to fully warm up (takes a lot longer than the coolant does) before giving it a hard time and use the rev limiter quickly and subtly, many would presume that oil pump gear failure is unlikely but still possible. The same concerns apply using a factory fuel cut rev limiter excessively so this concern is not limited to ignition cut. My recommendation is that if this is a concern for you, fit billet oil pump gears first.
