Nope, the X is a more efficient motor than the 9 and the head flows even better, so by that logic it would be the opposite. It's the compessor side of the X's turbo being a little bit smaller that is the problem I think.

LOL . You must not know that I helped research and figure out how the EVO ecu controlled boost system works.

I wrote the how to for controlling boost using the stock ECU. All that info you just posted came from my How to.

You just have to make the turbo side pill have a smaller hole. You DON'T need to mess with the solenoid pill. Its not a balancing act. You DONT change or mess with the solenoid pill when running ECU boost. Removing or making the solenoid pill will bigger will only increase boost about 2lbs and is NOT the correct way to do it. The solenoid pill is used to smooth the air going into the solenoid, to help make everything run smoothly.

Anyways, go read my how to's, yes both of them. Then you'll know more.

This is correct. The pill I have been referring to in the past few posts is the boost reference one on the line from the turbo.

The difference in mapping boost is having graphs for both solenoids. Lotsa boost graphs in the new car.

^EVO KID, there are two ways of doing it, this is one. From what I've read, using a smaller bleed pill in the turbo/wastegate T section doesn't alway solve the problem on it's own because if the pill at the solenoid is still too small then it cannot effectively vent off the excess boost pressure from the wastegate. Regardless of which method is better, there are two ways to accomplish the same goal. There's no need to be disrespectful, so let's keep this friendly.

I've used the bleeder pill method on VIIIs for XEDEs as well at the solenoid location under the airbox, but get spiking on spool that is sometimes impossible to control since it was variable. Throw extreme weather changes in the mix, and forget it.

I am in hope and belief that boost correction by using a reflash will reign that in a bit on the X. But Bruce keeps reminding me that its load based and not PSI based. One thing I would love about the PROcede is pid boost control. We used it on our Mazdaspeed PROcedes, and it was dead nuts repeatable, as long as the turbo had the efficiency to go there. Talk about dial-a-boost, it was wonderful.

sorry for being disrespectful, im not trying to...........

but your wrong, there is only one way to do it. You DO NOT mess with the solenoid pill. You dont remove it or change the hole size. People do remove the solenoid to gain a couple extra lbs of boost, but that is the INCORRECT way. The only way to correctly control boost with the stock system is using a modified turbo pill, NOT a modified solenoid pill. PERIOD.

I dont understand why you would argue with the guy that made the how-to's and figured out (with the help of others) exactly how the stock boost system works.

^^

a Bleeder pill is inconsistent and IMO garbage. Also im not talkin about bleeder pills, im talkin about using a modified turbo pill.

Man, I totally agree with you! I would never put a bleed tube in my X. What we tried for the XEDE and worked in 2004 does not mean its a good solution today.

PROcede boost control is totally different.

Back to the pill you were talking about, my main point was that putting a smaller diameter pill at the turbo side of the T to try to wiggle another half psi from an X up top is a lot of effort for nothing. I'd just rather make the power with timing since the 15g turbo is way past petered out up there anyway. If I had a little more efficient turbo like the IX unit, it would have more effect.

yep, that lil turbo is just running out of air. Making it hold more is just gonna make more hot air. Just like you, I'd rather run a lbs less up top and add some timing.

FYI, when I had the Xede in 05, I used a modified turbo pill so I could run race gas boost (25+lbs), not a bleeder like most did, as I have never been a fan of them.

The Vishnu method of removing the pill by the solenoid and replacing it with a bleeder actually works very well. It didn't work well for Shivy because he didn't have access to all the tables that are now available. It is "dead nuts repeatable" with no boost overshoot.

I've tried to help quite a few people (without much luck) who are using a smaller pill by the wastegate and are having boost overshoot issues. So, YMMV, but for sure there is definitely more than one "good" way to modify the boost control hardware.

I know ya use a bleed, so I know it can be done. Its just not my preferred way.

Getting a rid of spikes when using a smaller turbo pill can be done, its just take some time and good massaging of the boost tables.

That's what I was saying. @Evo Kid, I'm certainly not trying to argue with you; I know that you know your stuff. My comment was just that there is more than one way to do it, and you are probably right in that the smaller pill at the wastegate is a better way to go. I was just saying that sometimes with proper tuning a larger diameter pill at the solenoid can have good results as well. Either way, I look forward to someone testing this on their X and posting the results.

I'm sorry, I didn't clarify that I wasn't talking about ECU boost. When we used XEDE boost control, there was only one table in Xmap for boost. There was no correction, so you could get a great tune in the summer and overboost with 12 counts in the winter. I think the XEDE got a lot of negative press for knock that was due to its boost control and nothing else. In every one of those cars that we saw again, we brought the boost back to the correct levels, the knock went away, and the power came right back. It was brilliant in that it offered live tracing and live tuning without having to flash everytime.

As soon as we get ECUflash and have access to ROMs and such, I think the same smaller diameter turbo pill setup should work well, even with the twin solenoid setup (which I heard the X has)

^I think so too, especially considering the level of control that the twin solenoids should offer. Let us know when you have more info!