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post #11 of 14 (permalink) Old 12-06-2012, 07:35 PM
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Join Date: Feb 2012
Location: Britton
Posts: 656
depending on the size of the hole, velocity may or may not be an issue, but rather the motor running leaner now would be my concern

98 Evo 83.5ci, custom cam, 44cv, lightened ballanced crank, H-Beam rods, beehive springs, tapered pushrods, johnson hylift lifters, SE slip-ons no baffle, 101.78 hp @ 6200rpm
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post #12 of 14 (permalink) Old 12-09-2012, 11:34 PM Thread Starter
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Join Date: Jul 2012
Location: OHIO
Posts: 59
sorry for slow response to all the questions... I will try to get them all answered.. I just have the stock mufflers with the baffles taken out.. They were done by a local professional machine shop here locally... I do not have the original baffles. However, I do still have the stock exhaust... Haven't noticed anything performance wise as of this point.. Was considering getting a new exhaust just haven't found one sound that I like so far...
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post #13 of 14 (permalink) Old 12-10-2012, 09:32 AM
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Location: st.Louis mo.
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if you are running free flowing mufflers your ecm is seeing this as a lean condition due to fresh air entering you mufflers aka reversation so you need to lean it out a little some and you decel. popping will go away.this is very true if you are running a decatted head pipe.
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post #14 of 14 (permalink) Old 01-01-2013, 09:50 PM
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Join Date: Dec 2012
Location: Roseville Ga
Posts: 35
Buy a pc5 and have it tuned. Not all the deceleration pop will disappear but most of it will. Also you will enjoy the increase in power and will not hurt the engine by running it lean.

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