i noticed excessive smoke coming from the exhaust mostly betwwen 1750 and 2250 rpm, after a couple of days the car started developing a misfire and holding back whilst also belching clouds of blackish smoke. This worsened over a couple of days to the point that i was struggling to keep the car at a certtain speed without it slowing down and belching a cloud of smoke before accelerating again. i checked the exhaust and found a hole in the center pipe (the one with the flexi section). i replaced this section (with much difficulty and angle grinding) with some success the smoke has now stopped but the misfire and holding back whist vastly improved is still present.

Not really sure what the issue now is. i did notice when i had the exhaust off of the car that it was extremly sooty inside, not sure if this is normal or now effecting the performance?

any help would be greatly appreciated.

Thanks,

James