cm870 calcuulatted exhaust temp derate

[Rawze]

(07-03-2021 )wellrun Wrote:  boost never past 39 psi....dont have a pyro but ecm calculated reaches up to 1300f

It should not be doing that is my point... it is not normal. Maybe a problem with tune?... or problem with a sensor feedback somewhere?

Replace intake pressure sensor, check circuit id clear for the exhaust manifold pressure sensor ans replace it, etc.. find the problem instead of trying to cover it up.

There is known issue with calculated EGT's spiking between shifts, however it does not derate the engine over it. Under any kind of steady condition for it to read that high, something is actually wrong.