What sort of power gain would I get on my car (1.4 16V) with the following mods
adjustable fuel pressure regulator
K&N air filter
Custom built low pressure free flow exhaust
UNIchip with remapping, fuel injector calibration and Rolling Road.
Ive been told I can expect 15% more power. Will cost me about 380 quid (I might be able to save 88 quid if I get the zorst installed by the manufacturer)and Ill be without my car for a day (will have a courtesy car though)