who would win???
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Joined: Dec 2004
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*rant* Why does everyone have to rag on flowmasters!?!? I have a full dual 2.5" exhaust from the headers back, the extra backpressure of the flowmaster keeps this from hurting my low end tq. You want a certain amount of back pressure to maintain a good low end. I personally like the sound. I dont even think about the hp gained/lost by my muffler choice, 5* weather change is probably more noticeable than any combination of different mufflers you want to try. so WHY does everyone give a damn unless you have a 436 FI forged internal motor, IT SHOULDNT MATTER, unless the rest of your exhaust system is crap and the flowmaster is the last nail in the coffin, i see no reason to care. I know the 3" single exhaust sucks for the F-body and maybe that is why ppl hate flowmasters so much on this board, i suppose you need all the flow you can muster from the thing, but I (as well as most mustang owners) have a 5" (typical is 4-4.5") total exhaust diameter, so we dont worry so much with the flow restriction caused by the muffler. Really, its very trivial in a even close to stock mustang application. *rant off*
As to the mach 1 Vs. your car, good kill, i knew you would win from a roll but the dig being such a trump suprised me, props.
As to the mach 1 Vs. your car, good kill, i knew you would win from a roll but the dig being such a trump suprised me, props.
Staging Lane
Joined: Dec 2003
Posts: 77
Likes: 0
Originally Posted by Stanger88
the dig being such a trump suprised me, props.
His car likely has an extra 50 rwhp & 45 rwtq (or more) over the (mostly-stock) Mach 1 he raced.
What did you expect to happen?
It's not like the Mach had steep gears + ET streets to even the odds...
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
Originally Posted by Stanger88
*rant* Why does everyone have to rag on flowmasters!?!? I have a full dual 2.5" exhaust from the headers back, the extra backpressure of the flowmaster keeps this from hurting my low end tq. You want a certain amount of back pressure to maintain a good low end. I personally like the sound. I dont even think about the hp gained/lost by my muffler choice, 5* weather change is probably more noticeable than any combination of different mufflers you want to try. so WHY does everyone give a damn unless you have a 436 FI forged internal motor, IT SHOULDNT MATTER, unless the rest of your exhaust system is crap and the flowmaster is the last nail in the coffin, i see no reason to care. I know the 3" single exhaust sucks for the F-body and maybe that is why ppl hate flowmasters so much on this board, i suppose you need all the flow you can muster from the thing, but I (as well as most mustang owners) have a 5" (typical is 4-4.5") total exhaust diameter, so we dont worry so much with the flow restriction caused by the muffler. Really, its very trivial in a even close to stock mustang application. *rant off*
As to the mach 1 Vs. your car, good kill, i knew you would win from a roll but the dig being such a trump suprised me, props.
As to the mach 1 Vs. your car, good kill, i knew you would win from a roll but the dig being such a trump suprised me, props.
2 ¼ “ Straight Pipe 365 CFM
2 ½ “ Straight Pipe 521 CFM
2 ¼” Typical Bent tailpipe 268 CFM
2 ½” Typical Bent Tailpipe 417 CFM
2 ¼” Inlet/Outlet_ Glass Pack Tips- No Louvers- Smooth 274 CFM
2 ¼” Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM
Same as above set for reverse flow 141 CFM
2 ¼” Cherry Bomb 239 CFM
2 ½” Cherry Bomb 294 CFM
2 ½” Inlet/Outlet Dynomax Super Turbo 278 CFM
2 ½” Inlet/Outlet Ultraflow Bullet 512 CFM
2 ½” Inlet/Outlet Gibson Superflow 267 CFM
2 ½” Inlet/Outlet Flowmaster ( 2 Chamber) 249 CFM
2 ½” Inlet Outlet Flowmaster ( 3 Chamber) 229 CFM
2 ¼” Inlet/Outlet Thrush CVX 260 CFM
2 ½” Inlet/Outlet Maremount Cherry Bomb 298 CFM
2 ½” Inlet/Outlet Hooker Aero Chamber 324 CFM
2 ½” Inlet/Outlet Hooker Max Flow 521 CFM
2 ½” Inlet/Outlet Borla Turbo 373 CFM
2 1/2" Inlet/Outlet Magnaflow 284 CFM
Standard OEM 2 ¼” Inlet/Outlet 138-152 CFM
Standard OEM 2 ½” Inlet/Outlet 161-197 CFM
__________________________________________________ _
The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq
Sound Off in Quietest to Loudest (Decibels):
1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).
Backpressure is not needed to go fast.
:: rant on :: i love mustangs they sound beautiful . with stock exhast and no cats but really there not very fast stock unless u drop at least 4 'gs into it but they do have very good power down low till bout 2nd . . but the only fast mustang is the 03-04 cobra but i mean there blown. .make that much power na. . stop with the cheaters . . let people put a blower on them self . .well thats just my 2cents. .i rather have the choice if i want a cheater or all motor. . but dont get me wrong i owned 2 mustangs a 95 gt and a 97 cobra. . just like the trans am a lil bit more. .:: rant off:: nice kill had no doubt on the out come. .
Staging Lane
Joined: Dec 2003
Posts: 77
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Originally Posted by flash12t
but really there not very fast stock unless u drop at least 4 'gs into it but they do have very good power down low till bout 2nd . . but the only fast mustang is the 03-04 cobra but i mean there blown. .make that much power na. . stop with the cheaters . . let people put a blower on them self . .well thats just my 2cents.
My car seems to do just fine in the "go-fast" department....
Banned
Joined: Dec 2004
Posts: 2,636
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THANKYOU FOR PROVING MY POINT, the flowmasters made MORE HP than the no-muffler design. Dual flows at 2 1/2" flow about 450-500 CFM, my dual straight pipes flow about 1,000CFM. If I had no flowmasters my cars bottom end would SUCK, you need SOME back pressure (unless it is track only and low end doesnt matter b/c you launch at 5K all day). My point also stands that the flowmasters only made 4.8rwhp and 1 or 2 lb-ft less tq that the LEADING MUFFLER!!! Now...drop the dyno-room temp by 5* or heat-soak the engine...same if not BIGGER difference, so why not make fun of ppl who drive in 90* as opposed to 80* weather? Its a mute point, find a muffler with the sound you like, and go with it.
BTW, if you look at the dyno chart and flow list you will notice that some of the higher flowing mufflers were out dynoed by some of the lower flowing mufflers, 40CFM in the case of the one hooker mufflers 324cfm vs. magnaflow 284cfm. The disparity was not much in the hp department, but still, the point is made, there is more to it than just having massive CFM numbers. Backpressure plays a big role.
BTW, if you look at the dyno chart and flow list you will notice that some of the higher flowing mufflers were out dynoed by some of the lower flowing mufflers, 40CFM in the case of the one hooker mufflers 324cfm vs. magnaflow 284cfm. The disparity was not much in the hp department, but still, the point is made, there is more to it than just having massive CFM numbers. Backpressure plays a big role.
Last edited by Stanger88; Oct 19, 2005 at 09:46 AM.
Banned
Joined: Dec 2004
Posts: 2,636
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the 95 gt and 97 cobra are not an accurate measure of an NA mustang's capabilities. the 95 much less so than the 97, had you put some 4.10's or 4.30's in that CObra, maybe your opinion would have changed slightly, but yes, neither one, nor a stock GT are up to LS1 performance yet. but when you add mods, it is all subjective, like you say.
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by Stanger88
THANKYOU FOR PROVING MY POINT, the flowmasters made MORE HP than the no-muffler design. Dual flows at 2 1/2" flow about 450-500 CFM, my dual straight pipes flow about 1,000CFM. If I had no flowmasters my cars bottom end would SUCK, you need SOME back pressure (unless it is track only and low end doesnt matter b/c you launch at 5K all day). My point also stands that the flowmasters only made 4.8rwhp and 1 or 2 lb-ft less tq that the LEADING MUFFLER!!! Now...drop the dyno-room temp by 5* or heat-soak the engine...same if not BIGGER difference, so why not make fun of ppl who drive in 90* as opposed to 80* weather? Its a mute point, find a muffler with the sound you like, and go with it.
BTW, if you look at the dyno chart and flow list you will notice that some of the higher flowing mufflers were out dynoed by some of the lower flowing mufflers, 40CFM in the case of the one hooker mufflers 324cfm vs. magnaflow 284cfm. The disparity was not much in the hp department, but still, the point is made, there is more to it than just having massive CFM numbers. Backpressure plays a big role.
BTW, if you look at the dyno chart and flow list you will notice that some of the higher flowing mufflers were out dynoed by some of the lower flowing mufflers, 40CFM in the case of the one hooker mufflers 324cfm vs. magnaflow 284cfm. The disparity was not much in the hp department, but still, the point is made, there is more to it than just having massive CFM numbers. Backpressure plays a big role.
He explains all about flow. And slow about exhaust pressure wave. Now he sites some of these test as being slightly unfair. Not in the test so much but in the conclusion. As flow rate is but one aspect, muffler lenght and affect on the wave plus they type od muffler (glass pack/chambered) all have different affects.
Originally Posted by from the sticky
A UNCC Motorsports student checks the flow of the popular 2.5-inch Flowmaster street muffler installation for stock to mildly-modified 5.0 Mustangs. With 290 cfm each, a pair is good for zero-loss on a 265hp engine.
Thread Starter
On The Tree
Joined: Jan 2004
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I agree I was sure I would be able to handle him from a roll, but I was very nervous going from a dig. As soon as I hooked I began walking immediately, and by the end I was several car lengths ahead! He is getting his car dyno tuned soon so maybe that will help him out some. I'll try to get some races on vid for you guys!!!