ok guys i need yalls help bad... my 8 is bucking like crazy frol 40% to wot. i dont have no cel. could it be injectors? i have no clue and its pissing me off. but why i said injector is that it gets worse every other day. my plugs are ok but not great.... and the bucking im sayin is like hitting fuel cut( im not). it feels like im losing traction..please help guys.

 

change your plugs to start

 

im changing wires/plugs tomorrow.. anything it could be....could it be my clutch slipping?

 

if your clutch was slipping it would not cause your car to buck, it would feel like your car is hesatating and you would see a jump in rpms temporarily

 

boost leak somewhere? check all vaccum lines. and I/C piping. a loose clamp or vaccum line will cause the car to buck.

 

ok im going over everything right now... and the rpms dont jump or drop but the boost jumps

 

check ur plugs/ plug wires and coilpacks

I had the same issue and it was my plug wires.

Try and get a buddys evo and 1 by 1 switch each of those parts intill u find one that fixxes the problem

 

well my bov was out of the lower coupling... wft i feel like rainman.. well im going to drive it and tell yall if that was the problems..

 

that seemed to be the problem. it dont buck ne more. thanks guys for helping me.

 

well it started back today.... i changed plugs/ wires what els could it be

 

Check plugs could be misfiring or too rich or too lean, varying ignition timing from bad tune, fuel or even a boost leak etc.

 

If it popped a clamp or something and that fixed it the first time, did you double check all the hoses/clamps again? The bucking sounds alot like big boost leak.

 

man this is pissing me off.

 

I've been going through the same problem. Buy a boost leak tester, make sure your plug gap is 0.22-.025, or try swapping your Evo9 dv with your stock dv.

 

it didnt do it when i put the 9dv on.. i just looked at the coupling on the last driveshaft and its busted and grese is everywhere..could that be it.. there is no bindinh noise from it.