i suggest checking the the boost controller by disconnecting the hks evc and connecting the boost source directly to the wastegate and see what you boost. if you boost the same(like the way you boost with your current issue) then its probably the boost solenoid.

off topic, i notice you have an safc. what is this for if you are already ecu flash tuned?

 

I don't think its a boost control issue either. As stated before its been off since Installed and she would hit 19 all day long until now and nothings changed. I do have a cel but its for rear o2 from the exhaust. I wouldn think that would cause this unless it completely burnt out and doesn't the ecu mainly go by the front o2 anyways?

 

The safc controls the fuel a little more precisely. I also have it to tune so I can run my bov unrecirculated and measure knock.

 

You can turn off the cel in ecuflash. My rear o2 is disconnected.

 

I've read bout that before and thought bout going that route. But donno yet. Im prob gonna try the spark plug anti fouler trick to see if the cel goes away, but I need to get this boost issue sorted out first.

 

Ok I done alot more searching for my problem on google and came across something let me know what u guys think. Someone on another post I made also seen this post. Under Where has the lope gone to in my other post I've been having a problem with my cams not loping at idle recently like they use to. Another member said this might be related with the boost problem. My searching led me to believe that maybe over the winter of not driving my car my throttle body seals have went bad and are leaking boost. What do u guys think? Could this cause both of these problems? Im investing in a boost leak tester asap to eliminate this possibility but anymore insight would be great.
edit: forgot to add my evo has not been a dd its sat all winter which leads me to believe those seals probably dry rotted and is causing my cams not to lope and not being able to boost past 14psi

 

Don't take this as your answer but I went through exactly what you were going through. Same matching numbers and all. Here's my little story/rundown.

Bought the car, had a boost gauge in it. No mods except TBE. I eventually changed things up, pulled this boost gauge off the car and put on a new one. Noticed I was only running around 13-15psi of peak boost. Had to replace a few things and so I switched out the wastegate actuator at the same time. (Found my old one had a hole in the bottom, new one did not!) That didn't fix the issue.

Ran a legitimate leak test and heard a hissing coming from my throttle body shaft seals. Eventually put in a Hallman MBC and unhooked the stock boost solenoid. Also replaced the throttle body seals. Left the Hallman unscrewed (all the way out)

Haven't seen an improvement from the 13-15psi. I messed with it today and upped the boost some using the Hallman MBC and didn't see a change on the gauge yet again. I'm out of ideas too.

 

what the hell is a boost pill? where is it at? what does it do? im new to evos so idk this .

 

Bump for answers

 

How much did you bump up the hallman? I would continue to turn it and see if there is any change. If you can max it out and are still running the same psi. Try swapping it out. The boost pill is located in the stock vacuum lines and used with the stock bcs.

 

First, if all you did was install/replace a gauge and your seeing lower boost, you may just have a problem with your boost gauge and or lines.


The SAFC does NOT control fuel better then the stock ECU.

Also, the "knock" value the SAFC puts out is worthless and doesnt represent knock the ECU is seeing.

Last, a SAFC is not gonna make it so you can run a BOV un-recirc. You still have a MAF and that is the issues with running a VTA BOV.

 

^I know I can adjust my fuel+ /- 50 points on the safc I can take out enough to make my car idle down and die. I also had my bov unrecirculated and the car would die when coming to a stop. I messed with the settings and now it doesn't come close to dying when clutching. I know its not the best but its wat I got to work wit and came with the car.

Bump for answers on our boost issues.

 

You're running off the wastegate. Either your boost controll solonoid is not working or there is an issue with your lines to the wastegate.

TB seals WILL NOT cause a leak big enough that your turbo can't compensate for it.

 

So the boost control solenoid is still ran even after installing a ebc? Sorry if that's a stupid question but im use to the turbo hondas with no solenoid. And is there a way to check it?

 

The ebc uses it's own solonoid, at least everyone I've installed has. I'm sure there is a way to test one but I'm drawing a blank right now, may be able to find a procedure on google or something.

I'll probably look in a bit just cause I should know how to and it's bothering me now!