Wow, i guess theres really something wrong with my truck,ill try to change the air and fuel filter to see if theres any difference,i just had it diagnosed at the toyota dealershop last october cause the check engine light was on,they replace the TPS sensor and now its all good but gas was still bad.Theres no leak on the exhaust,cause i just had a new pipe and muffler installed on it,with high gas prices it leaves me no choice but to not to use it often and just drive a civic to work.nwayz thanks for the advise,hope to get more tips fom u...