Boosting Problems Under Load

[cefiroguy]

have got an RB25DET S2 motor in a cefiro and about a month ago started to miss so presumed it was coils, did a wasted spark kit on it and changed afm still no change. it will get boost if i slowly put gas down but wont when fully down? it stutters and looses boost. if any one has any ideas it would be much appreciated! cheers

Edited November 4, 2007 by cefiroguy

[UCD15R33]

Any mods?? what spark plugs you running??

[cefiroguy]

Any mods?? what spark plugs you running??

chipped ECU, Turbonetics T3/4e, W/gate , walhbro 500 Fuel pump, 3in Exhaust, bov, FMIC, it was running Iridium plugs so i changed to factory plugs and still no change. so im a bit stuck on ideas. its more like its surging

Edited November 5, 2007 by cefiroguy