I've had the J E Engineering remap done to my 99 dse auto - still far slower than my wife's XC90 - so I've stuck a PSI powerbox on as well - it goes like a cut cat now - but very bad overfuelling smoke on full throttle - 80mph on cruise on long runs will give circa 32-35mpg. Transfer box chain...

I've replaced the seals on the compressors on both my P38's and have recently done 2 for friends as well. Experience tells me it is not worth sodding about with the 'seal kit' with just the ptfe(?) seal - best to buy the kit with the whole arm and the pot or cylinder as well. 2 of those I have...