Difference between staight pipes and muffler??
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Freshman User
Joined: Feb 2008
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Difference between staight pipes and muffler??
i have a 92 f150 4x4 with straight pipes, but not true duals. i want my truck to be louder and was looking to get a flowmasters muffler. how much will that change my power and gas mileage?
Posting Guru
Joined: Mar 2007
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From: Florida
If you take the cat off or put a high flow cat on then it'll get louder.....but liek Chris said...straight pipes is as loud as you can get...the flowmaster should give it a good rumble though.
JR
JR
Senior User
Joined: Jan 2008
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From: pg b.c
get rid of the cat and install headers, leave the pipes as short as possible and your well on the way to pizzing off everybdy beside you
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Freshman User
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yeah thats what i thought and a high flow cat is more than a new muffler. is the american thunder a good muffler of is the delta 40 better?
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Post Fiend
Joined: Apr 2006
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From: Saskatoon Saskatchewan
If anything a flowmaster will muffler it down a bit git rid of the cat and put on a high flow or no cat at all and get some headers true dual x pipe h pipe or a custom bent y-pip thats not so restrictive
Senior User
Joined: Oct 2005
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You want Loud? shorten the pipes, have them come out under the doors, a longer pipe will beat down the sound the further it has to travel. Theres a chance though that your valves wont open-up completely without the back pressure associated with having a muffler attached to your exhaust. meaning your valve train is gonna get a little bit hotter than normal, and the valve guides slowly eat up the valve stems.
Posting Guru
Joined: Aug 2007
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From: Belle Mead NJ
Ebay is loaded up with hi-flow cats for cheap, and if you do want to make it loud. Do headers, get a nice y pipe, and then the highflow and either straight pipe, or a flowmaster orig 40. Orig 40 is there loudest other then the race 1 chamber ones. Here is some high flow cats to look at. I put these on a few cars.
http://cgi.ebay.com/ebaymotors/Stainless-Steel-Catalytic-Converter-2-5-HIGH-FLOW-CAT_W0QQitemZ280200342854QQcmdZViewItem?hash=item2 80200342854
This 1 is a 2.5" high flow
http://cgi.ebay.com/ebaymotors/Stainless-Steel-Catalytic-Converter-3-HIGH-FLOW-CAT_W0QQitemZ280200342866QQcmdZViewItem?hash=item2 80200342866
This is the same in 3"
If you want louder, this is how I have my F350 5.8 done.
Longtubes, to my own made 2.5" Y pipe true dual.
True dual 2 the flage, where it then goes into a dual in dual out flowmaster 40 muffler. Where that flage is, is where the stock cat bolted onto my truck. I still need for inspection.
Then it leaves the muffler and 2 90* bends, and then 2 3" or 3.5" SS Slash cut tips at a 45* angle infront of the rear tire. You want loud go that way. Ill make a sound clip tomorrow.
http://cgi.ebay.com/ebaymotors/Stainless-Steel-Catalytic-Converter-2-5-HIGH-FLOW-CAT_W0QQitemZ280200342854QQcmdZViewItem?hash=item2 80200342854
This 1 is a 2.5" high flow
http://cgi.ebay.com/ebaymotors/Stainless-Steel-Catalytic-Converter-3-HIGH-FLOW-CAT_W0QQitemZ280200342866QQcmdZViewItem?hash=item2 80200342866
This is the same in 3"
If you want louder, this is how I have my F350 5.8 done.
Longtubes, to my own made 2.5" Y pipe true dual.
True dual 2 the flage, where it then goes into a dual in dual out flowmaster 40 muffler. Where that flage is, is where the stock cat bolted onto my truck. I still need for inspection.
Then it leaves the muffler and 2 90* bends, and then 2 3" or 3.5" SS Slash cut tips at a 45* angle infront of the rear tire. You want loud go that way. Ill make a sound clip tomorrow.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
The loudest 2 chamber Flowmaster is the original non delta 40 series. The super 40 is deeper, but still not as loud. The 50 series is 3 chamber and quiter yet. If you want loud try to find a 1 chamber race muffler. I don't think they are street legal though. I would run an original 40 series non delta Flowmaster with a high flow cat if you want it loud. I have a super 40 on mine and it sounds great. I had a regular original 40 before that finally gave out after 10 years and 150K miles. It was definitely louder before, but its alot deeper now. But true dual straight pipes will be the loudest. Basically anything cat or muffler that you add to an exhaust system will make it quieter on some level.
EDIT That was weird. Just when I finished posting a response you said basically the same thing.
EDIT That was weird. Just when I finished posting a response you said basically the same thing.