ISX 15 Low Boost

[Rawze]

== Start by flashing (or re-flashing) the original factory program that belongs in it back in there.

== take it on a test drive, monitor the boost in a hard pull.. then do it again with exhaust disconnected behind turbo. see if it picks up a few psi or not. - it could be a clogged exhaust system/muffler.


== Do a CAC leak test on it and make sure it does not leak more than 10 psi in 60 seconds when pressurizing it to 30 psi and shutting off air supply.

== check to ensure it does not have an after-market branded (garbage) CAC unit on it that is restrictive.

there;s a lot more, like using insite to check engine state, fuel control state, and doing tests on that turbo and its actuator, and about a dozen more possibilities on why an ISX would make lower than normal boost.