Exhaust Piping....
#1
Exhaust Piping....
I have a question. I have a set of Magnaflow mufflers and will be getting some high flow cats, etc. My question is since I know someone who welds so we are gonna just weld in everything using the existing 2.25" piping for now with reducers to go up to 2.5" which is what the components will be. Will I even notice that much of a difference if I stick with the 2.25" as compared to later when I switch out all the piping to 2.5"? Is that .25" really gonna make that much of a difference in sound, power etc?? Any thoughts, opinions, evidence??
#2
I have a question. I have a set of Magnaflow mufflers and will be getting some high flow cats, etc. My question is since I know someone who welds so we are gonna just weld in everything using the existing 2.25" piping for now with reducers to go up to 2.5" which is what the components will be. Will I even notice that much of a difference if I stick with the 2.25" as compared to later when I switch out all the piping to 2.5"? Is that .25" really gonna make that much of a difference in sound, power etc?? Any thoughts, opinions, evidence??
Hope I could help out brother, and good luck on the welds, I have some pics of my Hi flow cats somewhere in older posts of mine, take a look at how I placed the 02 sensors if you have any doubts.
****Update: link to pics of CAts installed! https://www.jaguarforums.com/forum/s...ad.php?t=43505
Peace!
Last edited by jag79; 02-28-2011 at 08:04 PM. Reason: uploaded link to cats pics
#3
Yea the welding should be good cause by we will be welding I really meant he will be welding and I'll be giving him the ata boys. LOL. I have never welded and he has been welding since he was little.
Depending on the output of this topic I may just stick with the stock size and not go up in the future. But I may still stick with 2.5 with reducers at the components just so I have the option.
Depending on the output of this topic I may just stick with the stock size and not go up in the future. But I may still stick with 2.5 with reducers at the components just so I have the option.
#4
Yea the welding should be good cause by we will be welding I really meant he will be welding and I'll be giving him the ata boys. LOL. I have never welded and he has been welding since he was little.
Depending on the output of this topic I may just stick with the stock size and not go up in the future. But I may still stick with 2.5 with reducers at the components just so I have the option.
Depending on the output of this topic I may just stick with the stock size and not go up in the future. But I may still stick with 2.5 with reducers at the components just so I have the option.
Last edited by jag79; 02-28-2011 at 05:24 PM.
#6
Yes you are correct. I will more then likely have the same tips as you. Wish I could find a pic of the 4" tips on an 05+ body style since the rear valance is a little different. Not sure if the openings are the same size as the stock size seems to fill them quite well. I dont want to have to cut the openings bigger.
Anyone with an 05+ got pics of some 4" tips on?
Anyone with an 05+ got pics of some 4" tips on?
#7
Yes you are correct. I will more then likely have the same tips as you. Wish I could find a pic of the 4" tips on an 05+ body style since the rear valance is a little different. Not sure if the openings are the same size as the stock size seems to fill them quite well. I dont want to have to cut the openings bigger.
Anyone with an 05+ got pics of some 4" tips on?
Anyone with an 05+ got pics of some 4" tips on?
If my memory serves me correct one of the members here "Stypernut" has 4" tips on his 05' STR, take a look here https://www.jaguarforums.com/forum/s...t=40926&page=4
You could ask him more about the valence for the rear on the 05's.
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#9
Yes you are correct. I will more then likely have the same tips as you. Wish I could find a pic of the 4" tips on an 05+ body style since the rear valance is a little different. Not sure if the openings are the same size as the stock size seems to fill them quite well. I dont want to have to cut the openings bigger.
Anyone with an 05+ got pics of some 4" tips on?
Anyone with an 05+ got pics of some 4" tips on?
Hi vance
i got mine with a 4"inch tail pipe. (and mine is 05 STR)
i did my muffler with set of magnaflows i do believe it was 2.5in, as i remember the muffler store i went recommended a step up when reaching towards the end (muffler, if you step down, there will be a bottle neck... something like that)
i love the sound on the magnaflows.. not too loud.. just nice...
http://www.youtube.com/watch?v=Zg8570NvlPM (this is before the magnaflows)
#10
I wonder what this guy put on his jaguar STR over in the UK, it sounds fckn' crazy . Take a look.........
http://www.youtube.com/watch?v=mo3nd...eature=related
http://www.youtube.com/watch?v=mo3nd...eature=related
Last edited by jag79; 02-28-2011 at 11:00 PM.
#11
Dudes. Before useing 2 1/2" pipe for my full exhaust mod, I mentioned in threads that I felt the stock 2 1/4" was adequate and would maintain low end trq. up to 475 hp. I succumbed to 2 1/2" because others felt the opposite was true if high level of mods were to be added to attain power beyond 475 hp...500+ hp. Though I cont. to feel that 2 1/4" pipe is adequate to support up to 475 hp, 2 1/2" can be used when coupled with muffler components that slow down escaping gases. This is one of the reasons I discarded the Magnaflow's in favor of a pair of 12" Walker glass packed tube resonators leading to a pair of Dynomax Super Turbos'. Aside from a quieter yet still aggressive exhaust note, my butt-dyno feels the return of low end trq. You'll observe both the new n/a and s/c 5 litre Jags use 2 1/2" pipe with glass packed pre-mufflers and glass packed chambered mufflers (similar design as the Dynomax Super Turbo's). The reason for this is not soley due to increased displacement but to freer flowing incoming air intake charges, etc. This is what's happening with our STR's as we mod em. Example: K&N a/f to 4" free flowing air intake elbows, to ported/polished blowers with smaller pulley's spinning them faster (what about the massive amount of air churned by a future twin screw?), ECU tunes that increase ignition lead and fuel curves, hi-flow cats allowing spent exhaust gases to escape faster which in turn cause more complete scavenging of cylinders...this process requires more air to be pulled in from the intake-down= larger diameter pipe. By the way, 2 1/4" pipe makes for a louder exhaust than 2 1/2" pipe due to the freer flowing (less air friction) characteristics of 2 1/2" versus 2 1/4". The Magnaflows are quieter than the Super Turbo's at light throttle during cruise, but much louder than the Super Turbos' when dipping further into the pedal at a stop or cruise. I wrote a thread a while back: "Don't lose too much back pressure". Hope this helps guys.
Last edited by bfsgross; 03-01-2011 at 11:56 AM.
#12
A muffler that I have been looking at is the new Dynomax VT series. It is more of a straight-through design, but has a valve that closes at part throttle (highway cruising) to help eliminate some of the noise.
http://www.dynomax.com/mufflers.php?muffler=vt
http://www.dynomax.com/mufflers.php?muffler=vt
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bfsgross (03-01-2011)
#13
#14
After getting my Magnaflows installed awhile back I had Second thoughts; I took a gamble with the Magnaflows over the Dynomax VT at the time. I still love the Magnaflows but I should have went with the Dynomax VT's instead after reading a thread on the test results of people who actually tried them out and giving their opinions about it. http://forums.evolutionm.net/evo-eng...y-muffler.html
Down the line, I might change over to the Dynomax VT to cancel out the drone. It isn't too bad with the Magnaflows, but it would be better if the drone sound was a lot less than what it is now. Anyhow thanks for mentioning about the Dyno Vt' mufflers Mike! Let us know how they are after you get them installed. I have been following that thread for a very long time and people are giving mix reviews about it, it has its pros and cons just like any product.
Cheers!
Down the line, I might change over to the Dynomax VT to cancel out the drone. It isn't too bad with the Magnaflows, but it would be better if the drone sound was a lot less than what it is now. Anyhow thanks for mentioning about the Dyno Vt' mufflers Mike! Let us know how they are after you get them installed. I have been following that thread for a very long time and people are giving mix reviews about it, it has its pros and cons just like any product.
Cheers!
Last edited by jag79; 03-01-2011 at 04:56 PM.
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bfsgross (03-01-2011)
#15
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