Fuel pump relay harness, urs4/s6 If the stock engine arrangement

If the stock engine arrangement (with a restrictive MAF sensor) does not suit your needs

840cc High Impedance

This kit uses the same pressure plate and disc materials as stage 4 Extreme Daily

see our tuning section for details

2 misc inputs for resistive sensors

Fuel pump relay harness, urs4/s6 If the stock engine arrangementOur fuel pump relay harness kit will ensure that your 1992 1995 Audi S4 S6 will provide proper voltage to your fuel pump. Not surprisingly, 25 year old wiring is starting to degrade to the point where the high current demands of the fuel pump don't allow the pump to maintain voltage under load. Our relay harness kit provides a high quality 75amp capable relay to power the system and triggers off the factory fuel pump wire for a quick clean