No. Still flutters, but only after using car for a bit (about 3-5minutes). Had it out for a ride on I-75 yesterday. Car runs fine, except when acelerating withanything other than a slight touch.

Having read lots lately, and observing, I believe my problem is a blockage in the left cat.

Something's now broken off in there, rattles, and I think when it blocks exhaust flow, I get the muted fluttering.

'Cause when I turn off car, and start right up again, fluttering disaapperas for a short while.

What do you think?