did several searches, and couldn't get a definitive answer. Hope someone here can chime in (and I do sincerely apologize if this question has been asked before, I'm just unable to locate it).

I have a brand new 2006 EVO MR. I notice that the idle can sometimes become a tad rough... in other words, it will idle smoothly at a stop light, but every once and awhile the engine seems to hiccup. I don't notice the tachometer surging when this occurs, but the feeling is definitely noticeable. Otherwise, power delivery through the RPM band is fine, and the engine pulls strong. No SEL lights or any other indicator of a problem issue is present.

Is this normal behaviour for this engine? The car I traded in for the MR was a 2005 BMW M3. The S54 mill is incredibly smooth at idle, so this is what I'm basing my experiences on. This is also my first forced-induction vehicle, so please be patient with me. I'm learning!

Oh.. one last thing (and from this, you'll understand just how much of a n00b I am when it comes to the EVO), but I notice quite a lot of torque steer on dry pavement. Coming from RWD only vehicles, this is taking me some time to get used too. Is the torque-split on the EVO 50/50, or is it front biased or rear biased?

Thanks in advance for your time and assistance.

Edit: now that I think about it, perhaps it's not an idle issue. The best way I can describe the situation is this: sitting at a stop light, engine idles smoothly at 900rpm. Perhaps 6-10 seconds later, a very mild vibration or shudder occurs. It's only a split second. As if the idle dropped to about 500 quickly, then stabilized. It occurs intermittently, with no obvious pattern. The tachometer doesn't register a change. The A/C is off, along with other electrical components. Is this normal, and perhaps the engine vibrations just aren't isolated as well as the S54 in my M3?

Another thing, after doing a few more searches.. some people have said the EVO has a "lumpy idle" even when stock. Could this be what I'm feeling, and is completely normal??