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+--- Thread: 871 isx 450 max boost (/showthread.php?tid=1693)
871 isx 450 max boost - Mt farmer - 04-20-2017
Can anyone tell me what the max boost should be on a 09 isx 450? What should it go up to on a hard pull?
RE: 871 isx 450 max boost - Squish099 - 04-20-2017
871 is 40-41 psi I believe
RE: 871 isx 450 max boost - Billdozer2 - 04-20-2017
Rawze wrote in a post in December last year....
(12-24-2016 )Rawze Wrote: * Cap for a CM870/871, that is about 38-39 PSI max pressure.
* Cap for a CM2250, that is about 34-36 PSI max pressure.
* Cap for a CM2350, that is about 30-33 PSI max pressure.
RE: 871 isx 450 max boost - Rawze - 04-21-2017
(04-20-2017 )Squish099 Wrote: 871 is 40-41 psi I believe
40-41 is on the high side for a 871. 36-38 is much better, and they typically go to 38 max with factory programming unless there is something wrong.