Oh and just so you believe me:

http://www.mitsubishimotors.com/MMSA/jsp/evo/tech.jsp

Look at boost WOT (6500 rpms)

 

if the motor will handle 19psi at 3500 why wouldn't it be able to handle 19psi at other rpms. I mean they already have the thing running pig rich after 3500 only problem I find is the octane, fuel is detonating it isn't becasue of air fuel ratio's. Mitsu already screwed those up. I'm sure you understand what octane is for, so I won't explain it.

Yes I see 16.24 is that not what i said it ran?... looks back nope thats what i said it ran...
And yes, I do understand how they obtain this boost level, there is only one way to do so with their setup.

PS 85% of turbo'd cars i've seen tapper off at around 6000 rpms.

 

They simply did it for safefty.. the engine can run 19psi with a MBC without any real knock (Not that i am recommending others try this unless they know what they are doing, in which case they will have a wideband and a way to monitor knock.)

This is assuming 93 octane too.. everyone here probably knows if you are unlucky enough to only find 91 octane it will knock 100% bone stock.


Go look at the 3rd gen RX-7, WRX, Supra.. any turbo car.. they ALL bleed off close to readline. (Yes i get the point 3500rpms is not redline) but mitsu is probably a little worried about longevity. Personally i think the rich A/F ratio is worse then running 19psi to readline. but that is my opinion.



Anyway that was enough babeling..

 

Well, you added a little more to your post, but i just wanted to add, that you can reflash the stock ECU and have it hold 19psi boost till redline. the ECU does control this and specificly drops the boost down to ~16psi.

 

as i tried to state before i'm not saying the ecu doesn't drop the boost level down to 16.24. With a wastegate that opens at 11psi and a stock peek boost level of 19psi, is there any other way to regulate boost?

 

Bone stock? no.. But there are plenty if cheap easy ways to do it. (Bleed valve, check valve, or other type of mbc, ebc, or a ecu reflash will also take care of this).

We are argueing symantics, Yes peak boost is 19psi. Yes the ECU drops it to ~16psi after 3500rpms. Yes this is kinda overkill and you could pickup a nice bit of power holding to redline. The reason mitsu did this was for safty.

 

Oh and i was specificly disagreeing with the part that it was not designed to run 19psi and was only ment for spoolup, i agreed with everything else.. I guess i should be more clear.

 

then why did mitsu not choose to run 16.24 psi to redline?

sorry let me clarify that, run 16.24 and eliminate the need of running 19psi.

 

Ok, I will edit this cause you added....



The reason they jump to 19 is to give a nice lowend kick.. and they lower it after that for safety..


At ~5252 is the torque cross over and most engines like to knock around there.. also the higher you rev an engine, the more likely it is to knock.. which is why they lower it.

 

did you fix your boost leak yet? all this other gibber gabber... all it is, is a boost leak

 

yes I agree we should get back to the post subject, I apologize for wondering off.

 

LOL. i am sorry i ever started this thread. hehe.
i am going to check the bOV hose and check all the clamp.

thnx for the help guys.

 

one more q. how do you take out the ram air duct on the intake?
i am going to check the BOV hoses right now.
thnx again.

 

nevermind, i got it out.

 

lol...

I can take the whole intake off in 5 minutes while blindfolded now... ive taken that damn thing off so many times swapping out Shivs boost line... Anyway, did you find/fix your leak???

I had to go as far as removing ALL of the undergrommet material and looking at ALL of the intercooler hoses to check for cuts and to check the hose clamps... however they were tight for me.. just the BOX recirc hose clamp was loose.. Im curious to see what you find though