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i cleaned my MAF with CRC MAF CLEANER from autozone, seems thatthe acceleration has picked up , but the sound("roar") is still present, anybody with any opinion???? thanks

thanks for the info, by the way what do you guys think about the roar(for lack of a better word) is???

hi people :D , new to this forum, very exciting info on this forum, i too have a problem with my rx 300 (99), engine light on 3 weeks ago, got it checked ,turned out to be P0171. mechanic said need O2 sensors for front & back, advised me not to get it from autozone but from dealer. the price difference is huge, dealer wants $250 for each, autozone $169 front , $130 rear. <_< . need your help with that , also had to take an emergency trip to windsor, canada (about 650 miles) roundtrip. the light went off after 400 miles, but came back after another 50 miles. the engine is making kinda roar noise, every time i accelerate the it sounds like a hotrod. any advise low mpgs too thanks ;)