scr warmup

[Rawze]

(05-15-2023 )Mudflap77 Wrote:  .... Over boosting up to 40psi and chaulfing if not careful when shifting while in warmup mode and only in warmup.

That is an engine issue .. not an operating mode issue.

Partially clogged or after-garbage EGR cooler, ... maybe partially clogged egr piping, maybe bad (or garbage after-market) egr pressure sensor.. or just maybe.. the program itself does not match the engine ser# or needs an update.

For all anyone knows.. the turbo itself could have been replaced at some point with the wrong model.

Its anyone's guess... however ...

Turbo over-spooling and chuffing is usually an engine problem associated with the EGR system not breathing properly and not typically an scr issue ... however a partially blocked up exhaust system can contributed towards the overall issue, making it worse.
this post should help... http://rawze.com/forums/showthread.php?t...8#pid22458