johnnybravo

Talked briefly to a guy at work yesterday who has a mean (and loud) sounding mustang. I asked if he still had the cats on there. He said yes, but he had the exhaust converted to true duals from the cats back to the bumper, with no X or H pipe.

My question is, does anyone make a kit like that for f-bodies, or would it have to be fabricated at a shop?

Thanks,
John

JMBLOWNWS6

iTrader: (17)

Texas speed and performance TSP ---------------------> sponsor

night ghost

it can be done at the shop but can be easily fabricated. that is how my exhaust is currently, but you say he has true duals to his bumper, you cant do this with a f body you must do dumps if i am correct due to suspension etc.

turbowhistle86

iTrader: (7)

I have true duals to the bumper with an H pipe, and there is no problem with suspension components unless you hit a substantial bump. I have about 3.75" of ground clearance from the lowest point on the system, and everything is at least 1.75" away from fuel and brake lines.

kozak

iTrader: (2)

Many cars have over axle TD's it's just more expensive.

BAD WS6

iTrader: (14)

TD's are great but still not what I expected or want so I think it's time to change it up again.

camaroz87

iTrader: (2)

what dont you like about true duals"?

98Z28MASS

iTrader: (6)

As others have said duals dumped at the rear axle are the most cost-effective way of running a true dual exhaust. I would say if cats arent an issue then dump them or gut them and leave the shells there for visual inspection. Since you have a T/A your right you will probably want to run them over the axle and out the back so you dont have the holes in the bumper not filled in with tips. Id say check out a local shop that has a good rep for duals and have them build you some or check out the bassani true dual system that is made by vinci hi-performance that runs out the back.

RedRallyeZ

iTrader: (20)

thats not only true duals, those are straight pipes, which from what i know are raspy on ls1 cars. An X or an H might lower volume a little, but makes the tone much better. and there is a great sticky on this in the external engine section, there are a ton of people that have run then out under the axle in there. As long as the lowest point on the pipes is not that much lower than the bottom of hte pumpkin you're okay

98Z28MASS

iTrader: (6)

I believe that with an x-pipe the exhaust gases flow even better than straight pipes due to scavaging effects...

Sharpe

iTrader: (7)

A X or H pipe will sound better than duals without them, I think. And, the crossover helps scavanging, so performance wil be better as well. Our cars sound better, not worse, with cat verters. Longtubes into true duals with cats sounds bad ***.

you can route duals over the axle. Speed Inc. e-mailed me a quote of a whopping $800 more than just dumping them. Part of the cost to fab it up was the panhard relocation kit, IIRC.

turbowhistle86

iTrader: (7)

a BMR panhard relocation kit is all of $149, so I would probably do that with the true duals if you wanna run it out the back, I am about to place my order! I got lucky, my buddy's shop did my true duals for $100 parts/labor in 2.5" stainless, because I told them that I didn't think they could do it and the owner bet me $100.

'02 WS6

iTrader: (73)

under-axle w/ mecham tips is the way to go on TA's! If you route them on each side of the pumpkin you don't lose any clearance or have to get a PHB relo. kit

98MNBZ28

iTrader: (21)

what is the pumpkin?

turbowhistle86

iTrader: (7)

pumpkin=the large part of your rear end...well, your car's rear end. You can call the large part of your rear end whatever you'd like!

98Z28MASS

iTrader: (6)

I dunno about going under the rear axle. I know it works and is usually cheaper, but if you ever lower the car your screwed. Hell even at stock height it is going to be tight doing over speed bumps. Plus I dont think it looks as clean as when its tucked up and routed nicely over the rear axle. I agree though on the mecham tips, they are pimp on trans ams!

'02 WS6

iTrader: (73)

my car's ridin' on eibach prokit's w/ little to no clearance problems. and IMHO it looks just fine under axle but every one's opinion is different!

98Z28MASS

iTrader: (6)

Looks real nice! I dunno im just very cautious when it comes to riding with an exhaust that low, but that may be due to the absolutely ridiclously shitty roads in massachusetts lol. My slp blistein shock/spring combo (lowered the car about an inch) was a bitch to drive with mac headers and a magnaflow catback. Also, is yours flanged right before the rear axle? Looks like it and that was going to be my other question, how does everyone get at their rear end? The two under-axle setups I saw were not flanged and the whole exhaust would have to be removed to get at the rear end, which would be a bitch. Those tips though look sweet!