Im having the same problem, I took it to the dealer and they told me that the cats are clogged.

 

Glad to hear that its running better, I'm sure it was either the plug wires or the plugs. Damned NGK's. lol.

 

temp gauge still works i was jsut reporting what it was doing when it was cold or warm etc.

yeah thats happens to cats not alot to prevent it mine are freshhly replaced with the headers 20k ago or less

still running strong havent quite got a full tank of gas throught it yet so no mileage updates but seems promising so far

oh and sorry for tha late responce i jsut got update notification today!!! grrrrrrr