I've recently had my DPF mapped out and have bashed it through; is it worth putting a pipe through it, or should I leave it as is?
I'm feeling a loss in back pressure in the high end, less torque+acceleration before the turbo kicks in, am having to shift more and drop two gears to overtake etc; but I'm not sure if this is due to the fact that the remap was from a mobile tuner, or that the now-hollow DPF is acting as an expansion chamber and messing up airflow. --- The car is astronomically faster than it was before, I just know it could be faster-er
What do you think, pipe through or leave be?
(please don't shout at me for deleting the DPF, I had no choice, thank you)