http://shop.grahamgoode.com/front-to...32-70891-p.asp

These mate after buying poly ones and ones from trade counters I got these and no more issues

Oh and regarding your fueling my sons car is on greens t3 and 26 psi and if he drives it sensibleish on the motorway hes getting around 300 to a tank I would check yor air and water temp sensors if theres nothing been messed with since the last set up