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ermax · 12-18-2020, 03:08 PM

The answer really is in the TIR (Transient Ignition Retard) tables. These threads have some good info:
https://www.ft86club.com/forums/showthread.php?t=50088

https://www.ft86club.com/forums/showthread.php?t=118629

“transient” is when there are big fluctuations in the RPMs, for example blips or shifts. In the early days there was an issue with detonation on shifts at redline which was eating injector seals. The cause was that the original roms had the TIR table zeroed out so it wasn’t pulling timing on shifts. Shortly after the release of the car they filled in the TIR table which fixed the injector seal issue but also impacted blips a little. In 2017 they got WAY more aggressive with the TIR table which fixed some knocking on fast shifts but really killed blips.

It’s a trade off between throttle response or knock when it comes to the TIR table. I run the 2013 TIR table but don’t get the knock because I’m on E85. I think if you have a lot of time to play in RomRaider you could come up with a perfect table that will avoid the knock on high RPM shifts without killing blips.

12-18-2020, 03:08 PM	#17
ermax Senior Member Join Date: Sep 2017 Drives: 2022 BRZ Limited Silver Location: Jacksonville, FL Posts: 2,533 Thanks: 883 Thanked 2,049 Times in 1,191 Posts Mentioned: 68 Post(s) Tagged: 0 Thread(s)	The answer really is in the TIR (Transient Ignition Retard) tables. These threads have some good info: https://www.ft86club.com/forums/showthread.php?t=50088 https://www.ft86club.com/forums/showthread.php?t=118629 “transient” is when there are big fluctuations in the RPMs, for example blips or shifts. In the early days there was an issue with detonation on shifts at redline which was eating injector seals. The cause was that the original roms had the TIR table zeroed out so it wasn’t pulling timing on shifts. Shortly after the release of the car they filled in the TIR table which fixed the injector seal issue but also impacted blips a little. In 2017 they got WAY more aggressive with the TIR table which fixed some knocking on fast shifts but really killed blips. It’s a trade off between throttle response or knock when it comes to the TIR table. I run the 2013 TIR table but don’t get the knock because I’m on E85. I think if you have a lot of time to play in RomRaider you could come up with a perfect table that will avoid the knock on high RPM shifts without killing blips. Last edited by ermax; 12-18-2020 at 03:23 PM.