X15 chuffing through air cleaners at low rpm on jake brake

[Rawze]

(01-28-2024 )Jakt2016 Wrote:  ...
Yes it is chuffing out of the air cleaners. If you have the jakes on and let off its perfectly normal until about 1300 rpms. Then starts chuffing out the air cleaners. 2nd and 3rd stage.

chuffing is almost always caused by the turbo over-spooling for the task at hand.

I would still say to copy the program out of the ecm and e-mail it to me for a proper review of what was done before making too many assumptions. One never knows if a mistake was made, etc. ... just to be sure the turbo was programmed correctly for that make/model truck.

Also how much boost is it making in a hard pull?.

how much boost is it making on the engine brake when its chuffing?.

Is there an aftermarket CAC cooler on it?. Any other related non-oem parts?.

When is the last time the exhaust bp sensor and IMAP sensor replaced?.