Not from me, but yet more data to share on how detrimental the factory 85TT fueling is, as I’ve been repeatedly saying here since 2019. The words below are not likely a true AFR, as my bet is they had the SAS system in place. My data is no where as extreme, but still very bad, which shows why using our SAS Kit for AFR testing and correction is mandatory.
See THIS thread to resolve it, and enjoy your TT massively more, without torturing it to failure.
---- Pulled from the web thanks to Google ----
I’ve come across some credible data that raises serious concerns about the V85TT’s factory fueling setup. It seems the manufacturer may have compromised the engine’s health in favor of meeting emissions standards, effectively using their customers as guinea pigs, accountable for damage this setup is causing (in time).
HERE'S THE ISSUE:
• The commonly accepted “healthy” air/fuel ratio (AFR) for (liquid-cooled) gasoline engines is 14.7:1, ensuring a balance between performance, emissions, and engine durability.
• Shockingly, the V85TT is reportedly running at an AFR up to or more of 22:1 under certain conditions!
This ultra-lean mixture is far outside normal parameters and could lead to overheating, reduced engine life, and potentially catastrophic damage. Manufacturers may adopt such aggressive AFR settings to meet strict emissions standards, but doing so at the expense of the engine’s reliability is unacceptable—especially without informing/warning buyers.
WHY THIS MATTERS:
Running at 22:1 is not just a slight abuse; it’s extreme. Engines running this lean are more prone to:
• Overheating: Higher combustion temperatures can damage components over time.
• Knocking or Pinging: Dangerous detonation that can destroy pistons and cylinders.
• Reduced Power: A lean mixture typically compromises performance.
See THIS thread to resolve it, and enjoy your TT massively more, without torturing it to failure.
---- Pulled from the web thanks to Google ----
I’ve come across some credible data that raises serious concerns about the V85TT’s factory fueling setup. It seems the manufacturer may have compromised the engine’s health in favor of meeting emissions standards, effectively using their customers as guinea pigs, accountable for damage this setup is causing (in time).
HERE'S THE ISSUE:
• The commonly accepted “healthy” air/fuel ratio (AFR) for (liquid-cooled) gasoline engines is 14.7:1, ensuring a balance between performance, emissions, and engine durability.
• Shockingly, the V85TT is reportedly running at an AFR up to or more of 22:1 under certain conditions!
This ultra-lean mixture is far outside normal parameters and could lead to overheating, reduced engine life, and potentially catastrophic damage. Manufacturers may adopt such aggressive AFR settings to meet strict emissions standards, but doing so at the expense of the engine’s reliability is unacceptable—especially without informing/warning buyers.
WHY THIS MATTERS:
Running at 22:1 is not just a slight abuse; it’s extreme. Engines running this lean are more prone to:
• Overheating: Higher combustion temperatures can damage components over time.
• Knocking or Pinging: Dangerous detonation that can destroy pistons and cylinders.
• Reduced Power: A lean mixture typically compromises performance.
