guys I wanted some advice on something that happened 1 year f? and that, for lack of time and also why? I didn't want to pi? tap the machine, 1 year f? I have mapped the above-mentioned engine 1.3 90 hp mjet, without the dpf, I have performed by a preparer, the remapping is complete, and after various changes to the file, we arrived at a good point, the vacuum below 2000 rpm was a bit improved,but the fumosit? it was devastating, the trainer advised me to empty the catalyst of the series in order to safeguard the turbine and to reduce so, emissions of smoke are excessive, I did empty the cat, and I had serious relationship problems at the bottom, the void and resubmitted in a form that is greater than the when my astra was the original, delivery ? sharp, vacuum up to about 1800 rpm, then joined the pair in maniea sharp up to 4100 rpm, where the engine ends of the push and want the gear, and very annoying to drive in the city?, consumption are skyrocketing, due to the this problem and the use of the exchange repertino, to keep the engine happy, the break and a bit improved, after discharge, the preparer if I remember correctly, he modified the press rail, advance, pressure, turbo...and the curve of the diesel, I did reduce the amount? diesel fuel, which is excessive according to me, on the highway, the car choked, the smoke was obvious, and just rested a bit the throttle and the car resumed to increase the speed, if instead schiaccivo the accelerator the engine imballava tipoo flooded diesel fuel, then as said, I did reduce the oil and him for? he lifted up the press of the turbo, with elm 327 and torque I saw a peak of 1.5 bar in 3rd gear, and a constant 1.3 bar..high according to me,always the coach made me put the air filter bmc sports and a barrel similar to the original, but more? ******, money spent unnecessarily, according to me, now we come to the point I would like to replace the original catalyst by buying it used maybe from a car accident-free for the cure of the void caused mainly by the lack of back pressure from the emptying of the cat, on the net I saw the so-called twinpipe, according to you, with a turbocharger cos? excessive, if I put back the cat original or the twinpipe the life of the turbo would be as you say from Christmas to Holy Stefano? thanks a lot