No, that is not the case. The stock boost control setup on an Evo will only ever make so much boost. The way the stock setup works, the solenoid is actually bleeding off pressure that the wastegate see. If the stock boost control solenoid is held shut, you have minimum boost. If it is allowed to open all the way, you see max boost. The car may make a touch more power with the AEM by virtue of better timing and fueling control, but it absolutely, 100%, will not change how much boost the car makes with the stock solenoid and plumbing in place.

 

?? there are ways to increase boost "indirectly" via other manners like the wastegate. If the stock ECU can have some influence on the boost or the curve so can the AEM, and all the better. I should revise the statement, it doesn't open boost for us, but it is a potential option under this crazy open ECU ****

 

But its pointless, because from an electronics standpoint, the AEM won't make more boost than the stock ECU..

 

AEM isn't for boost control anyway...

but yea, autocrossers don't do pointless things for the slimmest of advantages. like put $6k shocks on $2k cars

 

I agree, the open ECU rule is silly if it really does allow for a stand alone some how.

 

From what I have heard, EVO X has something different regarding the boost control mechanics and supposedly can increase max boost numbers higher than 8s or 9s...is that true?

 

I'm not super familiar with tuning on AEM, but don't you have to change the MAP sensor so that you can tune for psi based boost vs load based? That wouldn't be legal under the ST* rules.

 

the link I sent is a plug n play. And this is just for the evo - many other plug n play ECUs for every other car out there, turbocharged or not. IMO a can of worms, but it is what it is.

I haven't explored into it, so I don't know what it does and does not require, and which aftermarket ECUs require what - but yes, I believe you cannot change sensors. I don't know if that also includes o2 sensors, adding gauges that measure afrs & boost, etc. some come with it

 

The Evo X uses 2 solenoids instead of one, so it can make a bit more boost than the 8/9.


The X also has TPS based boost control, which is cool. Makes power vs TPS much more linear. Doesn't make max boost any higher though.

 

I know exactly what it is lol

 

You can jam 100s into every cell on the WGDC map but you will still be limited by the boost pill/BCS/normally bleed, WG system.

The real solution, as has previously been mentioned here, is to use varying sizes of washers welded into the WG recirc line until you hit your knock limit with the allowed fuel.

edit: looks like I am a bit late to the party...

You don't need to change the MAP sensor if you are running a MAF, the ECU doesn't car how much boost is being made.

 

I'm also willing to bet I can reach out to AEM, let them know about the new ST* ECU rules, and see what they can cook up for ST* legal options. potential decent sized market here depending on how many different cars can run these ECUs

 

july fasttrack just released - I don't think anything of particular note except the proposed move of the 370Z to STU

 

What would that add over reflashing the stock ECU?

IIRC, standalones are legal now, as long as you can stuff them into the stock housing.

 

It won't really add anything.