Hello people I'm having problems with my Evo 9 it is running very very rich causing it to shoot flames also when I'm WOT it brakes up/miss fires so I just changed my plugs which didn't fix it the car also hits boost cut around 21psi this is not normal it should hit it around 27psi i have one abnormal code p0401.....dose this sound like there's a problem with the egr? What should I do

 

How long has it been running rich? What mods do you have? Have you check the vacuum lines running to and from the EGR?

 

Did you inspect your coil boots?

 

It's been running rich for a month. My mod list is exedy cluch with fly wheel, walbro 255, 1000cc injectors buschur race front mount and piping, ferodo brake pads 2500, ss lines, enkei nt03+m tungsten factory, kw v3, turbo back exhaust about to put a dump tube on,mini battery ,samco turbo inlet pipe k&n cone filter, hallman boost controlle, cosworth cams 272, supertech dual valve spring and retainers, arp headstuds, and a dyno tune. Yes i just found out one of the vacuums line thats should be connected to the top of the EGR valve (the side closer to the firewall) was disconnected. I reconnected it then then drove it but its still breaking up/misfiring only when WOT.

yes coil boots look normal is there a way to test the coil packs? im stuck and im not sure what to test or do to fix this problem

 

I would visually inspect them..no hairline cracks. this sounds just like when I had a hairline crack in my coilboot and my ignition was basically busting up at wot about 6000 rpms.

 

That makes sense but what explains the p0401 code

 

My car was doing that, ended up being a bad coil pack

 

that means one of the egr hoses are off. There's like 3 on the back of the intake manifold. If you can't feel them you may have to get under the car on the passenger side.

 

<p>If that's the case its a boost leak so be careful<img src="http://images.ibsrv.net/ibsrv/res/src:forums.evolutionm.net/get/images/smilies/biggrin.gif" border="0" alt="" title="Big Grin" smilieid="4" class="inlineimg" /></p>

 

it was a boost leak thanks people

 

Glad you figured it out.