Quote:
Originally Posted by F87source
The pre throttle body boost spike on let off is due to the throttle body closing thus preventing the air from going into the engine causing an abrupt surge in pressure while the air is being dumped via the diverter valve, it's normal and not a huge deal.
The manifold boost channel is a more accurate guide of what the engine is seeing in terms of boost.
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Following up, I used to not see the TMAP spike to 25psi when letting off the gas during logs, so asked Halim out of curiosity and this was his response:
“I made a change especially for 6MT users, so it doesn’t die at shifts randomly. Spike at the end is throttle closure causing it to stop airflow from entering the engine.”
Definitely echos what you mentioned, and even tho I’m DCT this is definitely now part of the tune, so I’m surprised a 3.5bar TMAP isn’t a requirement for the Stg 2+ map even if this isn’t happening under load?