Yep used to run bp ultimate... noticed that it was running like crap compared to what it used to.... car was tuned on BP too......
switched to vortex 98..... much happier....... also Mobil 8000 on par with the Vortex ... currently getting it tuned on Vortex 98 after the last round of mods......
oh Haltech E11v2 ecu and 11ty boltons.... GT35R, ext gate, greddy plenum, wideband O2 etc etc etc etc