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05-03-2010, 03:32 PM | #1 | ||
AU XR6
Join Date: May 2007
Location: Morwell
Posts: 80
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Hey guys, I just had some JimMock Motorsport extractors fitted to my au1 xr6. These flow through the stock cat and into a 2 1/2 inch exhaust. I have also put a xr6t air intake on it. There was a very small power gain; however i was expecting a fair bit more. Any advise on what is needed? is a tune required? reset of ECU?
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05-03-2010, 03:45 PM | #2 | ||
Just slidin'
Join Date: Sep 2005
Location: Brisvegas
Posts: 7,791
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Changing the cat would be a good start.
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05-03-2010, 03:57 PM | #3 | |||
AU XR6
Join Date: May 2007
Location: Morwell
Posts: 80
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Quote:
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05-03-2010, 04:17 PM | #4 | ||
Mr blue
Join Date: Jan 2010
Location: WA Perth Hills
Posts: 122
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Yeah but your cat might be blocked or old as the hills and there for no justice is being done to the rest of your mods. If you think about your engine as a motion of flow, beginning at you intake then going through your engine and then out your exhaust if there is a point within that flow slowing things down then everything slows down. Also if you don't have a Hi-Flow filter like K&N or such you might be losing some go go there as well. Your ECU should adjust to the mods after a bit of driving, so that shouldnt be to much of a problem but Ive always reset mine after any mods Ive done just for peace of mind.
Hope this help mate, Good luck Will
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Venom-Red AUII Forte
Engine Mods:| 4499's Pacies | 2.5" single muffler Redback Cat back | Hi-Flow Cat | Custom intake 3" | SS CAI snorkel | BM Hi-Flow Filter | Visual Mods:| Clear side indicators | Tickford Wings | XR dash cluster | Black gear surround and shifter | Painted brakes | 18" BF XR8 mags | Black chrome tail lights My Build |
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05-03-2010, 04:58 PM | #5 | ||
Just slidin'
Join Date: Sep 2005
Location: Brisvegas
Posts: 7,791
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How old is your cat?
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NP Pajero - For the adventure |
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05-03-2010, 06:11 PM | #6 | ||
Banned
Join Date: Dec 2004
Location: searching for cubes
Posts: 6,672
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If it's an AUI the cat may be original - CHUCK IT!
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05-03-2010, 07:56 PM | #7 | ||
Now Fordless
Join Date: Aug 2005
Location: Fremantle, WA
Posts: 3,611
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Seat of the pants your never going to feel much from exhaust mods. If you went from standard to a full extractors/cats/cat back system the you'd feel it a bit.
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05-03-2010, 08:27 PM | #8 | ||
FF.Com.Au Hardcore
Join Date: Dec 2008
Posts: 1,566
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Ecu reset will help a great deal. What sort of 2.5? If the mufflers are chambered and the cat is old they will both be choking the flow
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Current Blueprint 03 xr8 5 speed manual, Difilippo Quad Big Boy system, BPR CAI, BPR Custom tune, Underdrives 256rwkw BA manual Typhoon Fully optioned, 340rwkw@16psi (thanks Bluepower)! The old ride.... AU Fairmont, cammed beast, R.I.P you made my p plate years bearable! 150.8rwkw courtesy BPR |
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05-03-2010, 09:29 PM | #9 | ||
Teh Baest
Join Date: Jan 2007
Location: Hills Area, NSW
Posts: 649
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How did you judge the "power gain"? Was there a before/after dyno readout? Or is it simply how it feels? With the extractors, a great deal of the time, the gains arent really felt until the high rpm range. Depending on the dimensions of the extractors themselves. I know with my extractors, they actually feel more sluggish down low, but once they get past a certain rpm.. OMG FULLY TABOULI WATCH OUT ULEH!
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1999 Liquid Silver AU Show: XR6 Kit, Low, RDA Slotted's F&B, Fully Tabouli Sound System, Altezza Tailights (Good ones!) Go: K&N Pod w/ 3" intake, XR6T Snorkel, Pacie Comp 4480's, 2.5" Cat Back, CMS Stg2 Cam, Custom Tune, Tranny Cooler Coming..CMS Stg2A Cam, 68mm TB Later.. 4.5L w/ BOOOOOOOOOOST or XR6T or AUIII XR8 220 Currently: 151kW (165 on other dynos ) |
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05-03-2010, 10:24 PM | #10 | ||
FF.Com.Au Hardcore
Join Date: Nov 2007
Location: Riff
Posts: 12,388
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depends on what you were expecting. lets keep it real, they will make the car feel more responsive at top end (as previously mentioned)- but the outcome isnt going to be any "throw you back in the seat" scenario. Bolt on a turbo or s/c and this will produce the desired result. The ECU will relearn its self if you dont reset it.
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FGII XR6 IN LIGHTNING STRIKE R52 SIII IN GUN METALLIC |
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05-03-2010, 10:27 PM | #11 | ||
Afterburner + skids =
Join Date: Dec 2004
Location: Skidsville
Posts: 12,125
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Change the cat.
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Speed Kills. So buy an AU XR8 and live forever. Oo\===/oO |
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05-03-2010, 11:10 PM | #12 | ||
XB,XF,ZL,EA,EL,BA,SY,SZII
Join Date: Sep 2005
Location: Canberra
Posts: 3,479
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Let me get this straight. You've got an XR6 that came out of the factory with extractors, you've changed them for some after-market extractors, and you actually expected a performance gain?
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05-03-2010, 11:20 PM | #13 | |||
Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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Quote:
Did the torque increase? If so, where (ie what rpm range). Extractors don't always result in a massive power increase, but they should result in a taller, flatter torque curve.
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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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05-03-2010, 11:33 PM | #14 | ||
FF.Com.Au Hardcore
Join Date: Dec 2007
Location: Ballarat
Posts: 2,132
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Yes if you were expecting some out of this world gains you wont get them that cheap. I found that I have a bit more go down low (I have 4499's, high flow cat and 2.5 in redback), enough to spin the tyres from a rolling start up to say 20kmh and about 3500+ it really pulls a noticeable amount more.
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05-03-2010, 11:38 PM | #15 | ||
VFII SS UTE
Join Date: Apr 2007
Location: Central Coast
Posts: 6,353
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i would generaly look at fuel consumption...then you know you went forward with your choice.
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06-03-2010, 01:02 PM | #16 | ||
FF.Com.Au Hardcore
Join Date: Dec 2008
Posts: 1,566
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Bam, what a silly comment. I understand there are 2 different jmm extractors which did you get?
I felt a huge difference when I got my 4480s and even more with my hi flow cat. Low rpm was better but the top end was awesome. To contrast Poelwyks car has 4499 and the exact same catback and cat as me and his doesn't feel as quick up top but has great low rpm pickup and feels pokey for day to day driving. Where do you feel the power gain? i'd really reset the ecu then think about a new cat to let it breathe the beat you can. Also check out some of the threads on custom air intakes for some cheap/ free mods you can do at home like cutting the front lower air box
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Current Blueprint 03 xr8 5 speed manual, Difilippo Quad Big Boy system, BPR CAI, BPR Custom tune, Underdrives 256rwkw BA manual Typhoon Fully optioned, 340rwkw@16psi (thanks Bluepower)! The old ride.... AU Fairmont, cammed beast, R.I.P you made my p plate years bearable! 150.8rwkw courtesy BPR |
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06-03-2010, 01:10 PM | #17 | ||
FF.Com.Au Hardcore
Join Date: Feb 2007
Posts: 606
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did you get the race series or street fighter?
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9/98 AU1 XR6hp-about to retire from the road and be reborn on the race track. 86 ZL mint grandpa spec with premo sound and 150000km 07 TTG XForce, PLAZMAMAN, IDYNO TUNED, 349KW@all 4! 97 el futura MOCKed up with a 2500 stall, heaps of fun! |
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06-03-2010, 01:57 PM | #18 | ||
Just slidin'
Join Date: Sep 2005
Location: Brisvegas
Posts: 7,791
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I never felt much difference with any of my mods to be honest, except after my custom tune from Chiptorque. If it doesnt feel like its gained any power, go for a strap in your car, then hop in a stocko AU and see how much difference there is. Youll be quite suprised.
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06-03-2010, 11:35 PM | #19 | ||
Donating Member
Join Date: Aug 2006
Posts: 5,142
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My XR6 VCT had just a redback 2.5" strapped to it. stock manifold and cats. I noticed one hell of a difference. Whilst actual power gains may have been next to nothing. I guess what you feel is all that matters right?
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07-03-2010, 08:25 PM | #20 | ||
XB,XF,ZL,EA,EL,BA,SY,SZII
Join Date: Sep 2005
Location: Canberra
Posts: 3,479
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Duly noted Stattic. I was wrong about the standard manifold on the XR6, and JC promptly and courteously corrected me, therefore I apologise. You might do well to learn something from him about manners.
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07-03-2010, 10:02 PM | #21 | |||
Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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Quote:
Just to clear things up, the AU2 onwards T series (and XR8 220s, IIRC) are the only AU Fords/Tickfords to come with headers (rather than cast manifold) from factory, but even then they weren't very good with quite a pinch in one of the driver's side primary pipes to clear the steering column/rack assembly.
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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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07-03-2010, 11:03 PM | #22 | ||
rexnet
Join Date: Feb 2010
Location: Adelaide, South Australia
Posts: 3,562
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you should deff notice something. i put extractors on my AU with a 200,000K old cat and then changed it and the gains where amazing. its worth doing. just get a 100 cell race cat and be done with it.
i dare say you'd of gotten gains tho |
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07-03-2010, 11:11 PM | #23 | ||
Banned
Join Date: Mar 2009
Posts: 688
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There has been no mention of where the JMM sticker was fitted.
Has it been placed in the middle of the rear window for maximum visability from passers by? There is 20KW there alone! |
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08-03-2010, 01:16 AM | #24 | |||
FF.Com.Au Hardcore
Join Date: Dec 2008
Posts: 1,566
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Quote:
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Current Blueprint 03 xr8 5 speed manual, Difilippo Quad Big Boy system, BPR CAI, BPR Custom tune, Underdrives 256rwkw BA manual Typhoon Fully optioned, 340rwkw@16psi (thanks Bluepower)! The old ride.... AU Fairmont, cammed beast, R.I.P you made my p plate years bearable! 150.8rwkw courtesy BPR |
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08-03-2010, 01:22 AM | #25 | |||
Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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Quote:
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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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08-03-2010, 01:25 AM | #26 | ||
FF.Com.Au Hardcore
Join Date: Dec 2007
Location: Ballarat
Posts: 2,132
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To the OP:
Is the car hunting and surging? It took mine about 2 hours of driving to stop surging and re learn with the new extractors and that will be when you will notice a change. As said before though definately get a 100 cpsi racing cat off Sureflo (sponsor here) to finish the exhanust off. I guarantee therell be a noticeable improvement. |
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08-03-2010, 01:27 AM | #27 | ||
FF.Com.Au Hardcore
Join Date: Dec 2007
Location: Ballarat
Posts: 2,132
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It doesnt really matter in my opinion if you go 100 or 200cpsi but I really like shiny things and the 100cpsi racing cat is shiny, cylindrical and small which means its a lot easier to install and you wont have clearance issues like with a normal box shaped one only downside is the cylindrical ones arent heat shielded and I often get out of the car after a long drive and worry about how much heat its throwing out when i nearly get my legs burnt.
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08-03-2010, 02:49 AM | #28 | ||
FF.Com.Au Hardcore
Join Date: Dec 2008
Posts: 1,566
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I believe sureflow said somewhere that their 100 cell cats comply with euro 3 therefore legal on an AU but might wanna ask them to be sure. Not only are they excellent products they are very affordable
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Current Blueprint 03 xr8 5 speed manual, Difilippo Quad Big Boy system, BPR CAI, BPR Custom tune, Underdrives 256rwkw BA manual Typhoon Fully optioned, 340rwkw@16psi (thanks Bluepower)! The old ride.... AU Fairmont, cammed beast, R.I.P you made my p plate years bearable! 150.8rwkw courtesy BPR |
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08-03-2010, 09:09 AM | #29 | ||||
www.TUFFCARPARTS.com
Join Date: Feb 2006
Posts: 5,221
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Quote:
Quote:
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08-03-2010, 09:43 AM | #30 | ||
Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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I think he was talking about one of Bam's posts - if he was rude to me, I wouldn't have noticed!
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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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