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#1 | ||
Starter Motor
Join Date: Sep 2005
Posts: 17
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Hi guys im thiinking about putting a 3" exhaust system and performance extractors on my au2xr8.
has anyone heard another one and tell me if it sounds good and what peformance increases should i expect?? |
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#2 | ||
Smile
Join Date: Dec 2004
Location: Merrylands Sydney
Posts: 8,541
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Stiddy has 3 inch exhaust only in his xr6 au hp.That car flies man. He does not have extractors or cam.I would say that car is equal in speed as a full dev 3 hl..
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Stingray Car Security ph 0414445444 Single din radio fascias for fg to fgx fords Australia wide . FG 1 2 and 3 gauge holder in stock now! https://stingraycar.com.au/shop/ Site Sponsor See Sponsor Stingray Car Security 😍👌✌ AU wagon 6 14.241@96.75 1/4 mile sold.Octane fg xr6 turbo!! 12.312 112.21 mph home tune f6 injectors gone ..now in nitro fgxr6t ready to go again ![]() |
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#3 | ||
Guest
Posts: n/a
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Yeh, get a 3" cat back, then it'll be as fast as dev3 setups...
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#4 | ||
XB in parts...
Join Date: Dec 2004
Location: Sydney
Posts: 2,890
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Slightly off (the main) topic :
Is a 3" exhaust on a 6 cylinder effective or do you get probs with lack of back pressure(or whatever happens when your exhaust is too big). I'll def need a bigger exhaust for when I whack the turbo on so if a 3" is ok for a 6, I'll prob consider changing.
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Daily Driver 2019 Ford Escape...looking for XR6T's. |
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#5 | |||
Guest
Posts: n/a
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#6 | ||
Miami Pilot
![]() Join Date: Jan 2005
Location: ACT
Posts: 21,701
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I have single 3" with 4into1 headers on my AU1 XR8. I trade off a bit of low down torque for great mid to high range power/torque.
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The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb) 1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs). Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings FPV 335 build stats: <click here> Ford Performance Club ACT |
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#7 | |||
Smile
Join Date: Dec 2004
Location: Merrylands Sydney
Posts: 8,541
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Quote:
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Stingray Car Security ph 0414445444 Single din radio fascias for fg to fgx fords Australia wide . FG 1 2 and 3 gauge holder in stock now! https://stingraycar.com.au/shop/ Site Sponsor See Sponsor Stingray Car Security 😍👌✌ AU wagon 6 14.241@96.75 1/4 mile sold.Octane fg xr6 turbo!! 12.312 112.21 mph home tune f6 injectors gone ..now in nitro fgxr6t ready to go again ![]() |
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#8 | |||
Last warning
Join Date: Dec 2004
Location: Mornington Peninsula, Victoria HeadCount: 3
Posts: 11,194
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Quote:
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FALCN6 - Turbo, Air Bag Suspension - Hibernating EL GT - Supercharged NASCAR - 83 Thunderbird , Bagged DAILY - BA Fairlane Ghia, Boss 260 Turbo OFFROADER - Ford Explorer ![]() |
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#9 | |||
Last warning
Join Date: Dec 2004
Location: Mornington Peninsula, Victoria HeadCount: 3
Posts: 11,194
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Quote:
peak power may improve slightly. i'd just get the 3" exhaust a few weeks before the turbo.
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FALCN6 - Turbo, Air Bag Suspension - Hibernating EL GT - Supercharged NASCAR - 83 Thunderbird , Bagged DAILY - BA Fairlane Ghia, Boss 260 Turbo OFFROADER - Ford Explorer ![]() |
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#10 | |||
XB in parts...
Join Date: Dec 2004
Location: Sydney
Posts: 2,890
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Quote:
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Daily Driver 2019 Ford Escape...looking for XR6T's. |
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#11 | ||
Banned
Join Date: Jan 2005
Location: Beaumont Hills
Posts: 2,536
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Thanks stav, your a top bloke man..
Why are people saying 3in is too big on an N/A 6 ?? its not.. ive proven its not.. my car is actually faster, the only thing done to my car is a high flow 3in cat, mandrel bent 3in exhaust with a small rear muffler.. and a 3in mandrel intake i fabbed up myself.. and yes its loud and sounds like a drag boat or something.. Admittedly it has lost a 'little' down low but picked up a fair bit uptop, and being a 5spd, its not an issue for me.. 4000rpm launches at the strip are my friend.. i pulled a 15.009 with 2x15in subs in a massive box in my boot, spare wheel, amps and everything else, straight off the street and onto the track.. and yes i know gtech isnt everyones mate, but with my car empty eg subs out spare out etc etc its run 1x 14.8, 3x 14.9's and 1x 15.0 and since then i havnet been back to the strip.. Banger unless you've got a N/A 6 with a 3in system.. dont preach what you dont know.. EEVERYONE says 3in system is too big for a n/a 6.. its not the case and most people saying this havent ever tried it.. and as stav and many others have seen, my car goes a DAMN lot harder then alot of stockish 6's.. im seriously worried about doing any mods to it in the future apart from headers and a chip because im scared it will go slower.. rant on/rant off.. just sick of the repetitive bulldung poeple say on these forums sometimes.. anyhow a single 3 would be fine on an 8, twin 2.5 would be better i would think.. |
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#12 | ||
Audi S3
Join Date: May 2005
Location: Sydney.
Posts: 8,307
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Stids, what did your exhaust set you back?
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#13 | ||
Banned
Join Date: Jan 2005
Location: Beaumont Hills
Posts: 2,536
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$580 for a cat back mandrel bent system, i supplied the 3in cat though.. and they added it in for no extra charge..
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#14 | |||
reece1
Join Date: Jul 2005
Location: sydney
Posts: 856
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Quote:
jokes aside have you got any pics/info on your inlet/exhaust custom job. how did you go about it. email me if you want i would like to pick your brain on this as i am doing some extractors at the moment |
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#15 | ||
RIP...
Join Date: Dec 2004
Posts: 15,524
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I prefer twin systems on V8's, and on a 5L twin 2 1/4" is ideal.
Something to consider is not so much the pipe diameter, rather the muffler choice, as it's not the pipe which is the biggest restriction, it's the mufflers. Dual 2 1/4" mufflers will always outflow a single 3" muffler, and you will have the benefits of small(ish) pipes for good air speed, etc. Rick.
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. Oval Everywhere... |
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#16 | ||
Banned
Join Date: Jan 2005
Location: Beaumont Hills
Posts: 2,536
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reece1, pm sent...
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#17 | ||
Smile
Join Date: Dec 2004
Location: Merrylands Sydney
Posts: 8,541
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Sox I would not mind meeting you at my private test track some time..with the dev5..
__________________
Stingray Car Security ph 0414445444 Single din radio fascias for fg to fgx fords Australia wide . FG 1 2 and 3 gauge holder in stock now! https://stingraycar.com.au/shop/ Site Sponsor See Sponsor Stingray Car Security 😍👌✌ AU wagon 6 14.241@96.75 1/4 mile sold.Octane fg xr6 turbo!! 12.312 112.21 mph home tune f6 injectors gone ..now in nitro fgxr6t ready to go again ![]() |
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#18 | ||
Back on the road
Join Date: Dec 2004
Location: Wollongong, NSW
Posts: 3,205
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Back onto V8's for a second......
I've just fitted Pacemaker 4-1's (PH4006), 2.5" cats, and Lukey 3" single catback to my AU XR8. Only other significant mod being the Crane 2030 cam. It feels noticably doughier at part throttle compared with the stock headers/cats w/3" catback. The sound is good enough to pitch a tent in your pants every time you nail the throttle...lol IMO, it is too big for my mild n/a setup. If I wasn't fitting the blower soon, I would have gone for Hurricane tri-y's with their small 1.5" primaries and dual 2.25" from cats back.
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------------------------------------------------------------------------- AU XR8 Ute 13.90 @ 100mph - http://www.aufalcon.com/xr8ute 5L Windsor, GT40X heads, Crane 2030, Pacey 4-1s, Lukey 3", 3.91:1, auto. Tuned by me w/Quarterhorse and BinaryEditor. Coming Soon: Ported lower intake, Tickford "Premium" Brakes, and a good wash. |
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#19 | |||
RIP...
Join Date: Dec 2004
Posts: 15,524
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Quote:
Rick.
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. Oval Everywhere... |
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