Sounds like you use a 2 port version which limits things. I use a 4 port one,2 x for the front calipers and 1 x for the rear brakes but with an in-line pressure reducing valve to stop the rears locking up. The brakes are better than great,soo good in fact,i've scrapped my idea of fitting 4 pots,i've found some which are lighter than the G60s but i just don't see how they can be better than they are now,simple as that. Yours must of been set-up differently from mine as many people have driven mine now and ALL have said how great they are.
What are you using to adjust the rear brakes? Find the brakes perfect on mine, using wilwood midilites up front w/ 280mm disc, standard rears with a new/setup load compensator valve. The car stops like it accelerates!
