Why is it necessary to change the pills in the vacuum line in order to control boost with the p2? I am curious how and why this is different than the way Dynoflash holds boost.

Dynoflash says:

"The stock ecu is very primative on boost

its a open loop system - there is no feed back or monitoring of the boost level by the ecu

The ecu merely does its thing and the combination of hoses, pills and ecu action produces the stock boost level which genreally makes about 19 psi tapering to 16 psi

We modify the boost by chaging the boost taper function and the ign timing

First - there is a timed delay after which the ecu starts to activate the boost solinoid and reducing the boost - the stock setting is 2.8 secs - - we raise this to 10 mins which effectively eliminates this asepct of boost taper as you will never be on boost for 10 mins straight. This does not raise the peak boost it merely reduces boost taper."

 

Ok, if the solenoid is producing the taper, couldn't we just cap the vacuum line from the solenoid, effectively removing it from the waste gate control and thereby eliminating boost taper? Seems that the reflashes must just remove the solenoid control logic from the ecu program. If the solinoid line was capped and boost taper was removed mechanically this way, would the a/f and ignition timing from the ecu still function ok? If everything is OK, then this would be a cheap, safe way to reduce boost taper. Anyone done this?

 

Sorry, forget the previous questions. A good dose of searching this site I found the actuator to be set to 10psi, not 19psi like I thought.

 

well i got a p2 flash i was told that it holds 19 psi to red line.

it doesn't i had 2 diffrent boost guages and only made 17 psi max.

the boost solenoid is a on off system it doesnt restrict the flow.

as far as there boot vacum line i bought a new one from the dealer and i took them both apart they are the same. that i can see.

the p2 seems cool at first but for the money that all of us spent
you think you would get what they advertise.

i think they are great guys but i dont think we are getting a great bang for the buck.

i have added a mbc to get my 19 psi.

i dont see them posting here anymore or talking that much

oh well just ranting sorry..

 

Do you think there are any negative side effects from using an mbc with the p2?

 

Interesting. So far you are the only one with the max boost problem being too low. Is it possible that the pill replacement hose isn't on well?

 

Hey guys, I need some info on the same subject. I had a Greddy Profec-B boost controller and when I removed it now my boost spikes to 22psi and then settles down to 19psi on the stock turbo and stock boost slenoid. I removed it cause I'm gonna buy an AEM EMS and it has a boost controller, plus I had a buyer for the Greddy. Can I change the boost taper function with the AEM?

 

If your P2 is not satisfactory, I'd get your $ back. The pill removal mod is a "freebie" and can produce boost spikes of 24psi...

 

If the product is not producing as advertised, call the company. Ranting won't help you out any.

 

yeah, call them and they will take care of you

 

Have you checked for boost leaks?

 

Just curious, but how do you check for boost leaks??

 

Mitsubishi's method of boost control is very complex. (i.e. We have monitored the duty cycle of the solenoid at all RPMs and loads) A thorough explanation of boost control is better suited in a white paper.

A solid understanding of their methodology has lead us to the most safe and consistent method of boost control. Hence the WORKS boost hose assembly.


If you are having any issues with the P2 upgrade, please contact us here at WORKS so we can help.

-TylerO@WORKS