well that was another thing, my fan is on a switch inside the car so would I be better to change it back to sensor or some people have told me to take switch out and bypass sensor so as soon as ignition turned on fans are on? My bros xflow does this but I always thought it was better for car to heat up and allow fans on itself? Another question is will car run fine if I change it for my double capacity? Or will it need fettling with to run etc? Car was jst setup but cam went so replaced with a less racey one so know fuelling will need adjusted anyway but got told to upgrade cooler and fuel system so thought they would possibly need done same time?