tuning question

[Rawze]

(08-18-2022 )ptlogan77 Wrote:  Pyro sensor is post turbo in the spot where the doser used to be.

The engine brake is set as it was when I got the tune.

Many people with X15's are report that their boost pressures during engine braking is higher than older model engines.

on older models like the CM871, about 28 psi or so is expected.. and about 30-32 or so on the CM2250's and CM2350's max.. but on the X15's, some people are reporting they are running 36 and higher depending on the situation... even on factory stock programming. Personally, I would think that 36-38 would be pushing your luck with one unless the X15's maybe have stronger valve springs, or something else to allow it?... or maybe having it mapped so that it falls off more sharply at higher RPM ranges?.