2000 mustang gt mac prochamber, flowmaster 40 series

[RastafariPoet]

I'd be dukes of hazzarding that beast all day.

[Calbenmike]

What prochamber do you have? there's a few to choose from.

[joseEMO]

Does your prochamber + 40's drone a lot?

[stangbanger79]

ANY time you change to off road x or h pipe you should tune, mil eliminators can mess your air fuel up it just tells your car that its ok. i have a 06 GT and i had brenspeed do all my work and it is awsome full bassani and a hole lot more.

[mlang381]

Im using the mil eliminators, sometimes though my check engine light will come on, stay on for a few days then go back off. I can't seem to find out why, either.

[sliepnir16]

You got to have it tuned after switching to o/r

[BakerFX4]

no you dont

[sliepnir16]

your right as long as it has 02 fittings its fine. Eliminating 02s though I would tune it.

[LS1Killer01GT]

MIL elimanators fucking suck...I ditched em!lol

[killswitchny]

just put flowmaster original 40's on my womans 4.6 10 mins ago, surprisingly just mufflers dont do much. Will need to get an H pipe or prochamber to really open it up. did you get a check engine code from running without cats or are you using MIL eliminators on the 02 sensors?

[LS1Killer01GT]

I don't think you use org 40's then man there really loud..unless you didn't weld them in.If you don't believe me just watch 7earitups vids..his car has org 40's and they are very loud.The Flowmaster AM Thunder Mustang Cat Backs also have org 40's..later.

[mlang381]

Thanks, stock headers to o/r prochamber, flowmaster 2 chamber 40 series with stock tips.