Justin78

What spark plugs did you put in and what gap where they set at. Im also getting alot of backfiring since the cat change does anyone know why it would do this or does this lead to it being rich again.

If its running rich can it screw the cat up fairly quickly or does this happen over time

I started it up this morning drove it down the road and it just stalled and would not boost. I ended up taking it to the workshop put it on the dyno and still the same problem not boosting, no power, and black smoke, after all this it ended up being that the cat converter had sh*t itself and was blocked stoping all airflow Thanks for your help

Cheers mate Is there anyway of leaning it up slightly. I dont have any surging so i guess it cant be to rich ( i dont know), there sure is a fair bit of black smoke when the blow off valve releases

When i accelarate and then de- accelarate black smoke pours out of the exhaust. It has not done this before.I have just installed a k&n air filter and had the timming belt replaced, would this have anything to do with it ? Also Does anyone know what the oil pressure should be at idle and when running