I want to run a true dual setup when I get my F-body, I've having trouble deciding whether to run an X-pipe or an H-pipe and what kind of mufflers to run.

I want to get something from Lane's Performance if it's cheap, and I think I want to get the Magnapacks with the pipes routed over the axles. Anyone have any advice?

 

any over the axle setup is NOT going to be cheap....

call up lanes...they should be able to help you decide.

 

Anybody wanna offer there opinion on which crossover pipe and about the magnapacks?

 

X-pipes in general provide better scavenging over a H-pipe. This in turn will provide better torque and a small HP increase. The magnaflow bullet mufflers will be a good choice, and are what I plan on running in my dual set-up. The price of the system will not be cheap though. If you go through Lane, he will not ship you a over the axle kit. Only a dumped at the axle kit. The over axle kits take alot of time to fab up on the car, and a few items have to be moved or completly removed in order for the pipe to clear on the drivers side. Lane quoted me $569, dumped at the axle, and another $450 to go over the axle, only if my car can be brought to him. I'm just gunna go for the dumped at the axle kit with the X, and magnaflow bullets.

 

Ah man that sucks. $459 to go over the axles? F--k that I'll just get the X-pipe and magnapacks dumped at the axle and then when the system comes I'll have the tailpipes put on at my local muffler shop. I'm sure it'll be much MUCH cheaper that way. I've heard of people getting dual exhaust systems on 4th gens done for $300 over the axle. Though they are mandrel bent I doubt they are as well made as Lane's so I'll just go that way

almost $800 for a true dual setup

 

After talking to lane a few times, I can see where the cost comes in. He runs one pipe to each side. One over the passenger, one over the driver. When going to the drivers side, you have to remove the upper panhard brace and scrap it, then you have to move some wiring and brake lines. He said it takes him just as long to fab the over axle pipe as it does to build the whole front section. Not to mention he uses all mandrel, stainless pipe. As far as quality, you aren't going to get better than Lanes. I here the process is meticulous, and the end result is well worth the price.

 

Figures, damn Mustangs can have true duals but when I want that on a Camaro I have rewire this and scrap that and yadda yadda yadda..... lol.

Maybe I will dump them at the axle and have "novelty" tailpipes

I was joking about the novelty pipes...that's rice meat

 

just wondering why you are so iintent on getting true duals? on a normal bolt on car the gains are hardly worth the hassle or the possible loss of ground clearance.

for an all out drag car and high hp applications i can understand but for a daily driver it seems a bit of an overkill.

if you want the hp, just go for a 3.5" or 4" mufflex single pipe catback....both are more than sufficient to let the engine breath

 

Cause A) I love the way true duals sound. To me they just so much better than Y-pipes.

B) Even though my car will be a street car (not quite a daily driver though) I am shooting for about mid 11's in the quarter and

C) I hear that a single exhaust system only supports about 450 hp before you start to lose power on your mods.

and D) Its just all out badass

 

well i guess i can't argue with most of your reasons.

but the 4" mufflex system has more then adequatly supported a few 600+ hp cars.

 

600hp hmmm this is a possibility then. Few questions then.

1. Price?

2. Doesn't a 4inch system pretty much mean u have to run a single outlet. I've see a few 4 inch systems and all had single outlets. Even if I use a Y-pipe system dual outlets IS a MUST.

One outlet just doesn't look right to me on a muscle car (my main problem with the new GTO)

 

www.tbyrne.com

mufflex 4" aluminized, mandrel bent over the axle, spintech crossflow muffler, dual 4" tailpipes $599

expensive yeah, but it's enough to flow for nearly ANY engine and it's dual tips out the rear of the car. and it's bolt in.

some numbers to think about....

dual 3" pipes have 14.13 sq inches of cross sectional area, and 18.85 inches of circumfrence (surface area inside the pipe).

single 4" pipe has 12.55 sq in of area, only 11% less, BUT it also has 33% less surface area inside the pipe.

that surface area is what hinders flow through a tube. because of resistence between the tube wall and the air (exhaust) inside, there is a drop in actual flow characteristics.

it has been argued that the single 4" pipe actually outflows two 3" pipes...

 

Then you still have to go through a crossflow muffler, which inturn kills the more flow theory. The 4" flows better holds more stature in a single exit system, then again, you also loose the effect of the X-pipe.

 

Plus that $600 is for the cat back only. Then its another $300 for the Y pipe. You aren't going to support any 600 hp engine w/the stock Y pipe or any of the aftermarket ones w/the 2.5" pipes to the 3" Y.

That said, there are still 11 sec rides out there running 3" catbacks and Y pipes on headers.

From what I've read. There isn't much peak torque or hp gains from a true dual, but there is noticable gains over the entire RPM range. I'd much rather have that than peak gains. I've also seen a picture of a dual set up that ran the pipes the same way the stock system runs w/the mufflers in the back. Looked good and had no clearance problems.