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Muffler with gutted cat

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Old 02-08-2012, 04:45 AM   #1
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Muffler with gutted cat

96 2.7. Got a flowmaster 40 series on it now. Want to quite it down a lil more. What muffler would help?
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Old 02-08-2012, 06:35 AM   #2
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50 or 70 series or the stock one which soundslike a quad once the cat is gone.
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Old 02-08-2012, 02:23 PM   #3
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turbo style muffler maybe????
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Old 02-08-2012, 05:39 PM   #4
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I'm running the 40 series with a straight 2.5 inch piping no cat, I'm thinking about adding a resonator which would quiet it down abit
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Old 02-08-2012, 05:41 PM   #5
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Anybody know the general fine/punishment for no cat? I'm just curious
Sorry not tryin to thread jack here
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Old 02-08-2012, 05:46 PM   #6
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Nope idk and don't wanna find out ha but it sucks hopefully I don't get checked next month hen I get my inspection done:/ my headers are carb legal either...Ridin dirtay haha
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Old 02-10-2012, 08:42 PM   #7
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might be going to the summit racing store tomorrow. might ask them
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Old 02-10-2012, 09:09 PM   #8
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Quote:
Originally Posted by 96 toy taco View Post
96 2.7. Got a flowmaster 40 series on it now. Want to quite it down a lil more. What muffler would help?
Dynamax Super Turbo is not as agressive
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Old 02-10-2012, 09:12 PM   #9
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Should have left the cat alone. You lost low end power by gutting it.
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Old 02-11-2012, 05:54 AM   #10
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but it was stopped up. feels like i gained power really.
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Old 02-11-2012, 09:53 AM   #11
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Quote:
Originally Posted by 96 toy taco View Post
but it was stopped up. feels like i gained power really.
Because it was clogged and you freed it up. Same goes for high flow cats.
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Old 02-11-2012, 01:59 PM   #12
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Quote:
Originally Posted by 96 toy taco View Post
but it was stopped up. feels like i gained power really.
If it was stopped up, Im sure you did gain

Besides, it`s yours, do what you wish to it
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Old 02-11-2012, 03:53 PM   #13
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well got a turbo style muffler. walker brand from summit. just what i was looking for. got it clamped on right now, got to get it welded
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Old 02-17-2012, 02:20 PM   #14
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Cut my cat out and gained power, it was not totally stopped up but I'm not really buying into the whole power loss in the low end dealio.
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Old 02-17-2012, 02:27 PM   #15
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Quote:
Originally Posted by fsusteve View Post
Cut my cat out and gained power, it was not totally stopped up but I'm not really buying into the whole power loss in the low end dealio.
Sound does not equal power. You think you got power because your truck is louder. When you remove your cat you lose backpressure. This backpressure causes exhaust scavenging at low to mid RPM. Exhaust scavenging is an exhaust pulse sucking out the exhaust gases out of the next cylinder that is on the exhaust stroke. Believe what you want but facts are facts.
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Old 02-19-2012, 04:58 AM   #17
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Quote:
Originally Posted by whippersnapper02 View Post
Sound does not equal power. You think you got power because your truck is louder. When you remove your cat you lose backpressure. This backpressure causes exhaust scavenging at low to mid RPM. Exhaust scavenging is an exhaust pulse sucking out the exhaust gases out of the next cylinder that is on the exhaust stroke. Believe what you want but facts are facts.

I'm not basing my opinion on sound but an increase in torque, I understand the fundamentals of backpressure and exhaust scavenging, however I believe that the exhaust and muffler provide plenty of both. If anything it would be more affected by the OBD II due to the downstream O2 sensor, I did not experience any power loss issue although I expected to. Sometimes real world facts are different than theoretical opinions.
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