"Question/Help"cutting or removing exhaust & Catalytical converter system
I would like some advice on cutting the exhaust system from my 98 mustang gt. I have heard that it is an inexpensive way to get more power and a much louder rumble. Is this true?
Also if above is possible can you remove it so that you can put it back on when it comes time for emmisions?
Thanks for your thoughts
"the new mustang do it your self mechanic
If you take out the Cat you may be asking for more problems due to the fact that the computer monitors all kinds of info and one it that it looks for a certain amoount of back pressure. Before doing this I would try a Cat back system, and maybe a set of headers that go into the converter.
With that new of a car you will have sensor after the cat to make sure it is working. Also from what I have heard a properly working cat causes less back pressure then the exhaust bend over the rear axle. I would go with an after cat system like mentioned above.
i would do it-- great way to lose power and create a nasty sounding car.
it won't run right without the o2 sencers and may not run at all.
if you are just dying to do this, try to find a place just before the mufflers that maybe you can unbolt or cut and tie back, so come time for inspection maybe you can weld it back or make you a temporary sleeve to hook it back up.
Mustang cat-back exhaust...
I believe Flowmaster makes a nice setup for the Mustangs, good mufflers (small), and some nice mandrel-bent pipes. Pricey but worth it to get the sound and power out of the car. The stock mufflers and assorted pipes are the biggest restriction, keep the cats so it runs better/cleaner than a car with the off-road "H" pipe.
In most states it is ILLEGAL to remove the stock cats and drive on the street unless you can prove that a cat has failed, and then you can only change out the one bad cat, not remove all 4 (latemodel) or 2 (earlier cars). The only place you can legally run an aftermarket "H"pipe is at the dragstrip.
And to clear up a misconception, the only sensors in the entire exhaust system is the O2 sensors. There is no such critter as a "backpressure sensor". The ECM does not monitor backpressure in the exhaust, but what you will find is that making exhaust changes makes a difference in how the computer interprets the increased exhaust flow. An aftermarket chip is recommended so you can increase the fuel and take advantage of the new, freer-flowing exhaust.
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