Well the cars been running fine for about a month now and I had my licp blow off about 2 weeks ago, put it back on and tightened the crap out of it with a T-bolt clamp now.

Problem is Any gear over 3k rpms my car start missing badly, ive checked timing, plugs are brand new, fuel pump only has about 3k miles on it. The plugs are the Denso IKH24 i believe. Any idea at all I though one of the coils might be going out but they only have about 10k miles on them.

 

Put NGK plugs in there to start off with.

 

Like everybody else here is going to say... BOOST LEAK TEST!!!!!!!!!

 

+1 did you put the new plugs in before or after the pipe blew off?

 

im having the sAME problem but only in 5k rpms and up

 

You CEL light hasn't come on yet? Sound like an ignition problem though.