why is my rb25 slow?

[240addict87]

im new to this forum so i appologise if im not doing this right.i recently did a rb25det s2 swap in my 240 and something isn't right.out of boost,driving is fine but it has a rough idle but there is no misfire.in boost it feels like it just wont go.my sr was faster.it is boosting and getting fuel.it is the factory ecu on 13 lbs.nistune coming soon.i have changed the ecu,maf,plugs,and the whole set of coil packs.but it still is doing the same thing.i know my timing is 2 degrees retarted.i know that could cause the rough idle but what about being so slow under a load? mods.fmic,bovintake,k&n filterfull 3" exhaust walbro255lph fuel pump.

any help would be greatly appriciated.

[Joe]

fix your timing.

[SullivanRacing06]

timings off or you have a leak in your i/c set up

[virus77]

check tps