I've recently been upgrading my car slowly... as my budget allows. I have a '99.5 1.8t (AEB) I have the upgraded turbo inlet hose, k04 turbo, a custom 2.5" downpipe to mate to the stock exhaust (for the time being) My question is do I need a higher fuel pressure regulator and/or injectors? And if so, with injectors and/or fuel pump installed, will I need a rechip to run correctly or rather not ruin or damage the fuel system? I mean can I install higher pressure injectors and fuel pressure regulator with OUT a chip-up or will I ruin things if I run the car in that condition? My car is also a tiptronic ( i know awful) I seem to be having issues with the solenoids in the tranny... I am thinking I will order a kit to replace them all and the wiring harness. Does anyone know if this problem could be related to fueling problems? Thanks for any help/info in advance.

 

this has been covered a million times, but you can run with stock program but won't notice much of a difference... you don't want to or need to upgrade anything fuel related if you have not done a tune... and there are a few tuners for your car/model yr... and you will need to upgrade fueling according to their specs