mariotraci

WellI just bought a 2000 gt with Straightpipes, no cats, h-pipe. He saids all four O2s are bad. I need to make it quieter. I was going to put a set of flowmaster 40 series on it without the cat's or should i put cats on to make it quiter. But I dont know what to do with the back O2 sensors. I was going to buy a programmer to delete them and adjust the computer but I dont know if I need these LIM eliminatorsbecause the check engine light is on right now. need help on what to to?thank you o and i need to adjust speedo it has 4.30 gears so it off

JJ03MustangGT

if all four are bad then you need at least two sensors, and you either buy the MILS or the tuner. the tuner will also fix the gear problem

mariotraci

DiabloSport Predator Mustang Tuner does this come with different setting or do you have to to do the tweeking?will thismake it safe to run no cats and not mess any thing up?is there something that willcome withpretunes and can deletle rearo2s,change the gears?

Mark99GT

Do you mean straight pipes off the exhaust manfolds and all the way back? Theres no cross over on the mid pipe to make it an h pipe? If thats the case and you want to quiet it down some, look around online and grab a stock used hpipe. You could probably get one for like 80 bucks shipped. That will help quiet it down and will probably yield better performance than the straight pipes (if that is indeed what you have).

Either way, if the o2s are bad you have to at least replace the front two, but you should do all four. And as previously stated, a tuner, amont other thigs,will fix your gear issue and will allow you to turn off the rear o2 sensors if you wish.

mariotraci

can i run the rear o2 with no cats wont hurt them? i do have an h-pipe.then straght pires i just need to quit it down and fix the o2 problem and the gears. easyest way flowmaster 40

Mark99GT

Yeah, you can run the rear o2s without cats. You'll just have the CEL on until you fix it with either MILs or a tuner.