Stock PSI on a 2006 IX ?
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Joined: Jul 2005
Posts: 619
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From: Istanbul
how is your boost curve?
Mine spikes to 26psi, holds around 24.6psi through 4 - 5.5k RPM and drops to 20.5-21psi at 8k RPM. Boost is controlled via ecutek (restrictor pill removed). Car was mapped with shell v-power (97ron) but I run shell v-power racing (100ron) for additional safety when available
Mine spikes to 26psi, holds around 24.6psi through 4 - 5.5k RPM and drops to 20.5-21psi at 8k RPM. Boost is controlled via ecutek (restrictor pill removed). Car was mapped with shell v-power (97ron) but I run shell v-power racing (100ron) for additional safety when available
Originally Posted by evo-mike
max boost is 20.5 on an off the showroom floor ix. the ix brochure says exactly, to 2 decimals. so if people dont believe u, just show them the brochure. available at any dealership. like some of the others said, it will spike, depending on the car and mods, 2 psi or so. for u it will probably spike to ~22psi. and again like the others said it will taper. tapering means the boost pressure fades/falls at higher rpms. the taper varies, some fall as low as 15psi, typical is ~18psi near redline. i recommend getting a good boost gauge so u can see for yourself. the ix is a bamf. it can hold more boost i stock form...i dont recommend adjusting boost for someone like yourself. take it to a professional tuner who works with evos. ie: al at dynoflash or similar. feel free to ask any other questions. btw: my ix holds 25psi, but is tuned and has fuel considerations. 
Boss, have you verified that you actually see 26psi with no boost control through the use of a MAP sensor? It's very hard to get your boost that high with no boost control, and just removing the pill gives very erratic boost - not the best idea when you could easily have full control over the boost with a simple boost controller...
Stock is 20.3psi at 3500rpm, tapering to 17psi by 6500rpm (use 3rd gear as your reference). Some IXs boost more or less due to whatever differences there may be between cars, but those numbers above are the listed standard from Mitsu.
The stock Tee that the boost gauge runs off of also has an orfice in it as well.
Last edited by Mr. Evo IX; Aug 21, 2007 at 01:19 PM.