[lockylocke]

hi ... I really need helps from 3000gt experts. I have a 95 3000gt base. 2 months ago in a cold winter night..after pour in 1 can of Outlaw Booster....for a few hours....the car just suddenly went "boom" in the engine, and seemed to runs only 4, 5 cylinders (lost hp dramatically). Plus the muffler make "boom..boom" noises ..like having bad fuel problem or a hole in the muffler.... I took to a shop.. they replaced the coil ignition package, and told me that ... the engine problem is solved ..and it seems to me that the car gains some hps. (still not as fast as it used to be)...However.. the "boom ..boom" noise in the muffer still there and..he told me that there is a hole in the muffler....I took the the muffler shop... but they told me they can't find the hole, and that there might me one but it's up to me ..to replace the $500 muffler, and he cannot guarantee that the boom ..boom noise will be gone....Now i am driving in that condition for 2 months with engine vibrate hard sometime. It's really pissed me off ...'cause the original 222 hp ..now it seems to have only 140 hps... and the noise will not go away...

Please help if you have any idea of this problem. Is it 'cause the muffler only.....After I replace the muffler will it go back to the original state??? .. My previous toyata camry had bad muffler.. after replacing it ..the car did gain some hps..but i am not sure if that is the problem this time...

I plan on selling it..if I can not fix the car...
Thanks in advance...