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[sparkyw666.]

going away to get a catback powerflow on the mig . wantin  it to be loud so was thinking in getting them to leave out the center boxes?
 
has anyone anyone had i done with out the boxes ? or am i going to lost back preasure

[johny5]

I once had a powerflow twin DTM exhaust on my cavalier, it was lush and sounded really deep and loud, but not too loud if you know what i mean?

With powerflow, you can tell them how loud or quiet you want the exhaust to be which is pretty good.  8-)

As regards to straight through systems, your car will fail its next mot if u do away with the cat, and mr policeman wont take kindly to it either!

[johny5]

Cat back is ok sorry, didnt read the question properly lol.

[ChevetteNick]

am i going to lost back preasure

The only time you want back pressure in an exhaust system is if your engine is a 2 stroke

[Welung666]

Leave the centre boxes in and have a split twin boxless rear section