hmmm ill try that...should i also just try and get a mbc and see if it holds??

 

Can you rent a leak tester at napa or autozone? do you just make something that will fit over the compressor side of the turbo?

 

just make something. all the parts can be had at home depot for under $20 with a gauge and valve. just get a 2.5" plumbing coupling(comes with clamps on it), a PVC cap to fit in it, a gauged valve from the air compressor section, and a male air compressor fitting to go on that. drill a hole in the cap that is a tad smaller than the valve, screw it into the hole(it'll go, it's plastic)with some teflon tape or paste on it, and voila! put 22 psi of air through the system and listen. open the throttle body and listen as well, sometimes you'll have leaks from EGR lines and such. you'll probrably want to pinch off the boost control line coming off the compressor and sometimes(depending if the valves are opened/closed when the engine is ogg)pinch the breather hose off the valve cover. a good tip for IC hose is to use T-bolts for sure, but if not, some hairspray on the inside of the coupling makes it seal much better.

 

whats the max boost a stock 06 ix diverter valve can hold??

 

I just got my MR last week. After reading this post, I went out this morning and
do some test.

2nd - max 1.2
4th - max 1.2 tapper to 1.0
5th - spike to 1.3, then tapper to 1.0 then slow move up to 1.2 then tapper back to 1.0
6th - spike to 1.4, then tapper to 1.0

no good place to pull the car hard in lower gear, all test was done in highway.
I was hoping to see more 1.4 and 1.5 in 4th and 5th...
did mitsui go soft with boost to protect their car for the 10yr/100,000 warrenty?

 

not a good test, my buddy used to have a 2nd gen dsm, he had no idea that he
had a boost leak even though he was getting the boost that he set.
The turbo will just run harder to make the same boost with the leak.
He only found out later when he was working on the car for something else.

E.g. if no leak, the turbo will spin at X rpm to make the boost,
but with a small leak, the turbo will spin at 1.3X rpm to make the same boost.

 

What is the air temp when you were getting these numbers? The temp dropped to the low 50s and I was see 1.35ish on the boost gauge. When the temp was in the 70s, I would see 1.2

 

It was about 40-45F this morning

 

It doesn't hurt to do a boost leak test but later IX's have been known to run a tad less boost than the earlier ones.

 

You mean IXs that were made later in the year vs IXs that were made in later 04 or early 06?

 

As of now, in 3rd gear im peaking at 1.3 bar for about 1/4 a second. It then drops down to 1.1, and slowly goes to .9 when i reach redline.

2006 IX MR.

I thought i got a lemon, but to see other IX's with the same boost issue as me, i see that maybe the mitsubishi people made it like this

 

Wow I didn't think it really tapered below 17psi or so, but you're talking under 14. A flash even though I'm stock is looking better and better. Maybe not huge gains in peak hp, but definetly more power through the entire rpm band and less taper

 

My stock IX averages 1.2-1.3, with the ocassional spike to 1.35~1.38 kg/cm2 at WOT.

So that's roughly 18.5 psi average to 19.3-19.6 psi at WOT depending on gear selection, load, and throttle. From everything I've read, it's normal (and quite frankly close enough to 20psi to not warrant concern).

 

is you carm stock?I think is normal

 

you guys probrably have boost leaks. very common on evo's even if never modified. simple test will tell, and your car will run 10x's better when they're fixed! i had more than one. trust me, with a turbocharged car, boost leak tests should be a part of your regular preventative maintenance routine.