Pull your plugs and see if they are fouled. I had something like what you are describing when I put a fuel pump in a previous turbo car and didn't compenste for the extra fuel that it was putting out. My plugs were sooty black and misfired like you described. It's worth it to check it out.

 

if i do in fact find that they are fouled. What other kind of plugs can I get that would be able to take the extra fuel the 255lph puts out?

 

Any plug you choose will get fouled up from over fueling. With the two speed pump control circuit I have never seen a 255 lph pump cause problems in an EVO. It used to cause lots of problems in the DSM's though with the single speed fuel pump setup.

Later,

Keith

 

I had the H34 bov. It sticks VERY easily. If it sticks, no boost. Are you hitting any boost? Check that and your IC connections. I would not expect it to be the fuel pump. Could you better describe your issues...Does it happen in every gear?

 

I still get this car problem, didn't get a chance to fix it yet, been a bit busy. Anyway, I took the spark plugs out today and checked them, they look a little bit blackish, but not like its really fouled. I'll probably change them tomorrow to ngk or denso's tomorrow. The spark plug wires look like they are in great shape. Also re checked the fuel pump and all the lines and everything are on perfectly. The ic piping is on tight as well. I don't know what the heck is causing this, but I wanna drive my car and im on spring break this week 8- ( I'm gonna get a dynoflash and send my ecu in asap, but I don't think not having my car tune will make my car stutter whenever the boost kicks in, in every gear ! 8- ( Anybody in southeast va area that can help me