I'm currently running a fairly modded Polo 6R Gti with an APR stage 2, intercooler, exhaust, intake and R8 coils w/ NGK BKR7EIX plugs (the latest addition).
Since adding the coils my fuel economy has dropped to a long term average of 10lt per 100km which is constant, it doesn't go up or down, not even by 100ml. The short term average is 10-14lt-ish per 100km.
Logically one would think the coil packs are causing this but as it is a very common upgrade and the car actually runs smoother with them I'm not so sure. One other note of interest is the oil sensor is now throwing fault codes (implausible signal) and this started the day the coils went in. The wiring has been tested for the sensor and it's fine, so perhaps it's coincidence. Either way, it's getting replaced.
The fuel usage however is very strange. Has anyone experienced this?
Since adding the coils my fuel economy has dropped to a long term average of 10lt per 100km which is constant, it doesn't go up or down, not even by 100ml. The short term average is 10-14lt-ish per 100km.
Logically one would think the coil packs are causing this but as it is a very common upgrade and the car actually runs smoother with them I'm not so sure. One other note of interest is the oil sensor is now throwing fault codes (implausible signal) and this started the day the coils went in. The wiring has been tested for the sensor and it's fine, so perhaps it's coincidence. Either way, it's getting replaced.
The fuel usage however is very strange. Has anyone experienced this?
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