Removing 2nd Set of Cats

[UncleLar]

Does anyone have an actual dyno sheet they can post here showing the difference before and after removing the second set of cats on a stock or XCal'd MM with a CAI with the removal being the only difference between runs?
Seat of the pants experience is showing me a distinct loss of bottom end and low mid range torque,power and acceleration.

[Marauderjack]

It has been stated by some experts in the exhaust "bidness" that removing the cats will gain you nothing more than NOISE!!:eek:

I doubt you lost any power but it may feel like it since it sounds stronger??:confused:

Check with Dennis.....he may have some data!!:beer:

[fastblackmerc]

I'd remove all the factory cats and install 2 high flow ones.

[justbob]

Lar, My times at the track showed no difference at all.


However the sound is much more to my liking, and it only cost $30.00.

[Vortech347]

http://www.mercurymarauder.net/forums/showthread.php?t=48599

Here ya go.

[ctrlraven]

It does have some SOTP feeling if you already have high flow mufflers and more open exhaust than just all stock stuff. I felt the mid range difference.

More or less it's for sound but Vortech347's 4.6rwhp 7.9rwtq gain is rear wheel gain with some tweaking.

It's a cheap sound mod with just a tad of power increasing.

[Vortech347]

But that was peak HP. Notice midrange. It picked up quite a bit.

The sound difference is awesome. It sounds perfect.