2001 AUII XR8 exhaust discussion

[mcfly94]

Originally Posted by Peuty

Erm, I assume you are talking to me. Everyone that has heard my car comments on how great it sounds. With no balance pipe. So thanks for saying my car only makes noise pollution, that's big of you.

I'll try to rustle up a sound byte.

i have the same, twin 2.5 and no balance, no x, no resonator, just two straight through mufflers not glass packs, theres a certain rev range atm where it barks something cronik, not the nicest sounding, but i think thats because its a huge exhaust on stock headers cats and motor.

[Sox]

Originally Posted by STINKY NINJA

A single 3 inch would probably flow better than the stock exhaust with its super restrictive mufflers anyhow,not that im saying to get it because ground clearance may be an issue.
Ideally get a custom 2.25 twin with an x pipe 2 mufflers(centre) and 2 hotdogs(rear) i used to have a custom twin 2.5 with an x pipe and only 1 magnaflow muffler per side and it was a bit sluggy down low and sounded pooey and droned,was on a stock 220kw,was just too big for a stock windsor imo.
Ill say this though,it was the nicest symmetrical looking,shiny exhaust ive ever had on any of my cars,glad i never paid for it lol.

Originally Posted by STINKY NINJA

Soundwise it evens up the note between the 2 separate pipes and sounds alot better than a twin sytem with no balance pipe or x pipe,performance wise im not sure,i also had another 220kw xr8 with a twin system with no balance or x pipe and it was the worst sounding exhaust ive ever heard,almost like an old 253 thong slapper,very bad sound...

This dude is on the money.
2.25" is the ducks guts for the 5L, and they absolutely need a balance pipe.
2.5" would work well from the headers and in the mid section, but the tailpiece must be 2.25".
Making the pipe smaller as the gas travels encourages flow.

[mcfly94]

Originally Posted by Sox

This dude is on the money.
2.25" is the ducks guts for the 5L, and they absolutely need a balance pipe.
2.5" would work well from the headers and in the mid section, but the tailpiece must be 2.25".
Making the pipe smaller as the gas travels encourages flow.

keep in mind you guys are talking about stock 5l's being the 185 to the 220kw yes? even a 220kw with a mild cam would be best with the 2.25
but alloy head and aftermarket intake, cam, surely begins 2.5 territory

[BLU-220]

listen very well in what Sox says or he will give you a lecture on about exhaust systems on how they work and what's the best system for different applications

i was waiting for you sox to reply in this thread

[Sox]

Originally Posted by mcfly94

keep in mind you guys are talking about stock 5l's being the 185 to the 220kw yes? even a 220kw with a mild cam would be best with the 2.25
but alloy head and aftermarket intake, cam, surely begins 2.5 territory

Yeh, fair enough on a 185.

Originally Posted by AU2GHIA

listen very well in what Sox says or he will give you a lecture on about exhaust systems on how they work and what's the best system for different applications

i was waiting for you sox to reply in this thread

It's painful watching so many people fit an exhaust which is too big, using the mentality that because a race car has it, so should my road car...

[STINKY NINJA]

Originally Posted by Peuty

Erm, I assume you are talking to me. Everyone that has heard my car comments on how great it sounds. With no balance pipe. So thanks for saying my car only makes noise pollution, that's big of you.

I'll try to rustle up a sound byte.

Well you assumed wrong matey,if i quote you then im aiming it at you,if not then its a general statement.

[T MAN]

while we are on the subject, what exhaust did the 220kw come with std??

[Sox]

Originally Posted by T MAN

while we are on the subject, what exhaust did the 220kw come with std??

Dual 2.25" to the center mufflers, then dual 2" tail piece.

[STINKY NINJA]

If ford would have used decent straight through mufflers it would have flowed quite good.

[Sox]

Originally Posted by STINKY NINJA

If ford would have used decent straight through mufflers it would have flowed quite good.

I did this to mine just recently as a cheap interim until I make a complete new system.
It made quite a decent improvement overall.

[T MAN]

thanks sox..

im currently running hurricane headers, 2.5" 100 cel cats, 2.5" merge into a single 3" with xforce muffler and a generic hot dog at the rear, its a 220kw with std bottom end and trickflow 170 heads..
I have been considering going to a duel system, its just the matter of 2.25 or 2.5 and wether or not to run a H pipe or x pipe cross over...

[Sox]

Originally Posted by T MAN

thanks sox..

im currently running hurricane headers, 2.5" 100 cel cats, 2.5" merge into a single 3" with xforce muffler and a generic hot dog at the rear, its a 220kw with std bottom end and trickflow 170 heads..
I have been considering going to a duel system, its just the matter of 2.25 or 2.5 and wether or not to run a H pipe or x pipe cross over...

As already mentioned a dual 2.25" is ideal for a road going 5L.
My 5.6L Windsor has dual 2.5" to the middle and dual 2.25" tail piece.
The method of balance pipe isn't really important, so long as it has one.

[NCII40]

Originally Posted by Sox

This dude is on the money.
2.25" is the ducks guts for the 5L, and they absolutely need a balance pipe.
2.5" would work well from the headers and in the mid section, but the tailpiece must be 2.25".
Making the pipe smaller as the gas travels encourages flow.

http://www.fordforums.com.au/attachm...7&d=1423959668


What about 2.5 crush bend rear section
as you can see its reduced the diameter of the pipe /??

would this be ok?? with an added xpipe

[Sox]

Originally Posted by NCII40

What about 2.5 crush bend rear section
as you can see its reduced the diameter of the pipe /??

would this be ok?? with an added xpipe

The bigger pipe will still have lower velocity, so not really.
It's all about keeping exhaust velocity high in the most used RPM range.

[b2tf]

Not an AU but a 5l nonetheless, my EL runs a twin 2.25" with no merge pipe, metal cats, a straight through muffler then 2 resonators at the back. Happy with it.

[Polyal]

Problem with 2.25 is that it then becomes custom? What off the shelf system is there in that size?

[STINKY NINJA]

Thats the only issue with it,can become pricy to get a custom mandrel bent twin system done,i think thats the only reason most go with twin 2.5 off the shelf.
I only just got a new exhaust for my eb,only off the shelf options were 2.5 or 3 inch single or twin 2.5 with no x pipe,i would have loved a twin 2.25,i know its not a 220 xr8 but my motor pretty much has 220 heads,cam,manifold(not t/b)sounds almost identical.

[NCII40]

you would be looking at over a 1000$$ to have a custom 2.25 twin with 2 x mufflers and xpipe

2.5 twin with 2 x mufflers easily accessible at a wrecker 2nd hand for 200$$ and probably about 120$$ to 200$$ to install

[Polyal]

But without going to pick a part what is the cost of a 2.25 cat back?

I saw Manta had a 2.5 dual for about $950. Ill have to measure mine.

[pete05]

Polyal I was just quoted $1200 for a 2.25 mandrel exhaust by one of the best in western sydney.

[ebv8]

i had a couple of AU XR8's,
3in single 2 mufflers, sounded crap
duel 2.25 with chambered mufflers no balance pipe, great note but quiet
put on 2 hotdogs, loud and flappy
put on a balance pipe, loud and less flappy but too loud really
put on 2 redback straight throught mufflers, nice note but think these without a balance pipe would be great
and last one was a 220kw with 3in single and sounded flat and boring

so all in all if i did it again i'd use a duel 2.5, 1in balance pipe, and a single oval resinator each side placed at the back if they fit

[FTW-302]

Just buy the Manta twin 2.5' system, you won't be dissapointed.

[Polyal]

Does anyone have any clips of the Manta setup?

Mines pretty loud and droney at the moment, no idea what brand it is though. I was after something a bit more refined.

[BOTTLEDUP]

Originally Posted by Polyal

Does anyone have any clips of the Manta setup?

Mines pretty loud and droney at the moment, no idea what brand it is though. I was after something a bit more refined.

My understanding is it isn't very quiet, but the only guy I know running it is FTW-302. I think he might have some clips, perhaps drop him a PM?

[Bossxr8]

Originally Posted by NCII40

you would be looking at over a 1000$$ to have a custom 2.25 twin with 2 x mufflers and xpipe

2.5 twin with 2 x mufflers easily accessible at a wrecker 2nd hand for 200$$ and probably about 120$$ to 200$$ to install

Mine was $600 for a dual 2.25, 2 resi's and 2 chrome tips, but I supplied the 2 Hooker aerochambers (which are too quiet). All up it would have cost pretty much bang on $1000 I think.

Picked up 9rwkw with it though so it made excellent gains for nothing but a catback over the previous single 2.5.

[Sox]

Originally Posted by NCII40

you would be looking at over a 1000$$ to have a custom 2.25 twin with 2 x mufflers and xpipe

2.5 twin with 2 x mufflers easily accessible at a wrecker 2nd hand for 200$$ and probably about 120$$ to 200$$ to install

Comparing a brand new system to a second hand system is really an apples/oranges thing.

You might find a new system to be a bit less than that too, perhaps as low as $800.

And, I wouldn't have thought a good 2.5" dual exhaust system is common from a wrecker.

[LyleXR8]

manta use combinations of mufflers, resonators, hotdogs and straight pipes in the middle section and tail pipes, so many different combinations can be made

[b2tf]

Originally Posted by Polyal

Problem with 2.25 is that it then becomes custom? What off the shelf system is there in that size?

Nothing as far as I know. I guess its one of those things, you can either have one made exactly how you want it for a price, or grab an off the shelf job and take the pros and cons as they come.

FWIW I had a Difillippo system on my last XR8 and it was good, but it was a single 3" also.

[NCII40]

Ok i stuffed up

I bought the falcon Dual Exhaust and it don't fit my fairlane
we cut the pipes ready to extend the front section and weld in an XPIPE but the rear section didn't fit and it was sitting heaps low
It was build for a sedan and this would of cost around the $1000 mark

anyone else want it?? it practically brand new
i left it at the exhaust shop

owes me $220

Purchase me

[T MAN]

I would if you were in nsw...