My set up currently is.. Stage 3 bushar head everything legit everything
272 cams,Rs transfer case,Manly turbo tuff rods
weisco pistons ,acl race bearings,All custom ic piping
Fp black turbo speed density and also a 4g64 bottom end. She's swapped. But before my clutch went she was breaking up really bad. Could it be plugs?ngk Br8es currently. Could the plug be too cold? Any help would be great

 

breaking up as in the car drives fine till it hits a lower boost spot then normally? cause that could be plugs but if it feels like the car hits a wall and goes nowhere at a certain point that could be a fuel issue. im leaning more towrds the plugs being fouled id check them before you go crazy

 

and no br8 plugs shouldnt be to cold i run them with less mods then you and have no problems. although i switched to bpr8es and it helped me. also if there not gapped correctly thatll cause a problem. if there not already try putting them at .020