MATTREDSS

iTrader: (16)

Here is some pics of mine. TSP true duals with dynomax mufflers. I need to take it to exhaust shop and have them cut the hangers to tuck it up closer.

The stains on the ground are from when I blew the pinion seal out.







I will get sound clips soon!


Matt

Bad06SS

To the op, could you add a paragraph about running true duals with no x or h pipe? I've considered not having a connection pipe, and just having the pipes separate all the way out the back.

KW4life06

iTrader: (12)

From what I know, and anyone can correct me if I'm wrong, I believe having some form of crossover (x or h pipe) balances pressure to your banks and promotes scavenging, which will in turn increase effeciency and horsepower.

gavspurplez

iTrader: (6)

i'm thinking about getting a TD system. a fellow local member has a system for sale.

speed inc x pipe with 4x9 magnaflow mufflers with turndowns.....i'm wondering if it will fit my car. i would have to get some flanges welded in order to bolt it up to the headers. also, i have the slp bolt on sfc's, so would they be in the way ?? how can i mount a hanger for the rear of the exhaust ??

i could also purchase an x pipe and mock up my own.....flowtech has an x pipe avail, and i could go with flowmaster single chamber mufflers....

i briefly went through this thread....what do you guys think, suggestions / opinions are all welcome,

thanks !!

FastRidesOnly

for my 98 firebird v6.. i'm gonna do a custom exhaust.. 2 pipes ran to the back to 2 Flowmaster 40s..then have them come out the sides with undecided tips.

not sure if i'll cut thru the side skirts or run the tips underneith the skirts

gotta get a job first though.

RippinZ121

iTrader: (16)

I've heard that the Speed Inc. setup is pretty good. I've never seen it so I dont know how the hangers are, but it shouldnt be a problem if they dont come with any. And I think any kind of SFC will allow for TD's as long as they arent those triangular ones.

FastRidesOnly

i was thinking of buying one of those flexible tubes so i can see what shapes of pipe i need.

BrokenWs6

FastRidesOnly

^^^ i wanna try a set up like that. except i want 2 flowmaster 40s.
i want it to sound like my 97 mustang GT. i'll be happy then.

did someone make that set up or did u buy it like that?

LS1HIGHLIFE

iTrader: (8)

Very nice! Do you have any sound clips in car vs. outside?

slt200mph

iTrader: (42)

The H pipe is pretty much none functional in that configuration ... it needs to be much shorter to work properly .... you could have just left it out and saved some pipe

ja_engineer

I thought everyone may find this helpful when designing thier TD setup.

Muffler Flow Testing

All tests via an independent lab
All tests @ 15” wc

2 “ Straight Pipe 283 CFM
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

************************************************** ***************

This test was performed by 5.0 Mustang & Super Fords Magazine, December 2002 issue (page 55) on a '90 Mustang LX coupe with 370hp and 11 second potential. 66 pulls were made for this comparison:

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).

BrokenWs6

Custom setup. I use to have Flowmaster 1 chambers dumped, but I opted to go with the Magnaflows out under the bumper (I just love the way they sound ). I have the single chambers for sale actually.....The old setup...

Thank you! Unfortunately I don't have any sound clips because I blew a hole in the side of my block last weekend...Still have to pull the motor out and see what went wrong.

It sounds very close to this though...
http://www.ls1sounds.com/true_duals/...peedIncTDs.AVI
http://www.ls1sounds.com/true_duals/...ht-driveby.AVI
http://www.ls1sounds.com/true_duals/...ht-driveby.AVI


Yea, I know lol! I originally had 1 Chambers dumped, and I left pics with the guy doing the exhaust, but he still put in a 2 1/2 ft h-pipe!!! I was pissed, and the guy refused to change it or refund my money, so I am now verbally ruining his reputation and sending would be customers to the guy who did the back half of my exhaust. The second guy did a very nice job, and I will be going back to him in the spring to have the front hald re-done with an x-pipe.

BTW, the guy who did the back half used to work for Doug Thorley headers in the 70's and 80's, so that was comforting.

Oh, and the tubing is 3" all the way back, with 5" tips

mastercoryd

iTrader: (3)

x and h pipe question! I was going to get LT headers and have my muffler guy make me 2.5 true duals, He did a set on my brothers grand prix before and they were clean, he did not use an x or an h pipe. Do i really need one? like will i loose alot of horsepower? and will it sound shitty if i dont have one? thanks

9t8z28

iTrader: (19)

If they ain't mandrel bent, forget about it.

9t8z28

iTrader: (19)

I wasn't going to post these pics because I have a ton of oil all over the undercarriage due to my supercharger create an excessive amount of crankcase pressure, and there is a ton of mudd under it from the dirt roads I live on. Oh, and I also have not finished painting the undercarriage flat black.

The pics aren't the greatest since my friends don't know how to take use a camera.

Well anyway, these are my TD's. I made them from "304" polished stainless steel. Every piece has been fabricated, even the X-pipe. All tubing is 16 gauge mandrel bent. I am by no means a welder, so try to over look them.

I have more ground clearance than any cat-back on the market and no parts of the floor have been modified except for a small dimple for the passenger pipe under the pass. seat.

Coming soon will be better focused pics and some shots of the ground clearance on my lowered car. Let me know what you all think.






Driverside ball flange has been corrected since pic was taken.

This short torque arm brace allows less clearance for exhaust than the factory sheetmetal brace.








UMI TA relocation bracket was used, although not necessary.


PYPES M-80 mufflers. Hangers have since been moved for a cleaner look.




Yes, the exhaust is close to the drivershaft and rear, but never should these two components ever get this close unless you are launching the car off of a bridge. Even so, there is a fingers width clearance throughout it, which is more than adequite.


I built this about a couple of months ago and now it is time to get rid of the 2.5" and go to 3" since I am very close to 600 hp.

Hammbone

iTrader: (1)

3" manderal bent over rear axle with borla xr1's and kooks headers.

bene

iTrader: (16)

Nice set up. Why didn't you go cross overs? APE did this exhaust?

badass99ss

iTrader: (17)

I swapped out the single chambers and replaced them with some Magnaflows. I painted them black so they would blend into the car. Im not really one for tips, especially chrome.

Hammbone

iTrader: (1)

yeah Jason up at APE did it. Not sure what you mean by cross overs? are you talking about an X pipe or over each side of the axle?