CM 870 exhaust manifold is leaking at seals. Want to replace the EGR section with non

[3406E]

I’m not deleted unfortunately

[Rawze]

(07-29-2025 )3406E Wrote:  I’m not deleted unfortunately

even if it de-mandated, the exhaust pressure sensor still needs to operate. Here is a front piece that has the pipe fitting...
https://rawze.com/forums/showthread.php?...5#pid71695

[mikkhh]

Knowing that back pressure sensor is used for correcting timing. Since that I have a question. How important is the angle of sensor on manifold and length of that tube between manifold and sensor?

This sensor "listens" or pressure fluctuations to determine detonation and excessive back pressure. How smart are those ecm s for listening to "noise" on back pressure sensor? And since this sensor is reading analogue pressure it can have some noise in it that will be filtered out before the data is acknowledged by ECM.

[Rawze]

(07-29-2025 )mikkhh Wrote:  Knowing that back pressure sensor is used for correcting timing. Since that I have a question. How important is the angle of sensor on manifold and length of that tube between manifold and sensor?

This sensor "listens" or pressure fluctuations to determine detonation and excessive back pressure. How smart are those ecm s for listening to "noise" on back pressure sensor? And since this sensor is reading analogue pressure it can have some noise in it that will be filtered out before the data is acknowledged by ECM.

its not too critical as long as the sensor tube length stays the same.