Speeding up slag on my Ford Escort

Hi, now I’ve got a Ford Escort. Year of construction 93, 170 tkm down, 1.6er, 16V, 90PS, still has TÜV up to 12/09 (and on the note there are only minor defects: oil loss of the engine) for 300 EUR so not so the eye-catcher, but for that lower and sport exhaust and K&N air filter (open). Whenever I give gas the car slags and is barely mobile from 70 on… But I have no idea what that could be, because if I take the gas away it runs completely calmly and it does not slag anything! On the left, both drive cuffs are loose. So the one on the engine side and on the wheel side. When accelerating in the 3rd gear, the car also jacks, of course, but I noticed that the handbrake light briefly flickered.. Engine loses a little bit of oil and oil change is already long overdue, vllt. helps the info yes?!? Handbrake in the stand tightened and with neat fabric the car went a bit forward and pulls a bit to the left! It also pulls a little to the left I couldn’t find out where the slager is coming from… Vllt. has someone a plan. I could imagine that it comes through the loose drive cuffs, because there’s dirt in it and it’s all going to get rid of it. What would it take me to have fun then, someone knows that? And then I have a few minor questions: The lowering, the K&N air filter and the exhaust system – but I don’t have any extra teeth because of ABE o that, what am I doing? I have a switch with 3 positions in front of the switch lever, there is FOG and DRIVE, so fog and driving, but nothing happens when I press it, what is it? And a “funk thing” was retrofitted for the ZV, but probably wrongly clamped, because sometimes after closing the warning flashing system concerns (but is another click from the ignition box than the normal warning flashing). Vllt. does someone have a schematic or something? And the ZV funkti The boot flap doesn’t remain on its own, what would it cost to repair, or what do I need? And what kind of tyre air pressure does it need? I didn’t find anything, neither in the doors, nor in the tank lid?!? Quick answer would be great! mfg