Past few months, ever since i fit my catback system, ive been getting juddering, which is usually when going steady speeds or sitting in traffic/trailing round roundabouts, often around 2-3k revs.
Ive tried new plugs, going to put some injector cleaner in, and ive been told it can be other things such a EGR or exhaust blowing causing false lamba readings etccccc.......
But can the new backpressures from the exhaust be causing this? If so, what can i doo?
Its annoying! Makes it look like i cant drive when it does it!