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EF XR6 - Remove Reso and/or Second Muffler? 


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 Post subject: EF XR6 - Remove Reso and/or Second Muffler?
Posted: Fri Mar 21, 2008 1:33 pm 
Getting Side Ways

Posts: 839

Joined: 1st Apr 2005

Gallery: 4 images

Ride: EF XR6 Wagon, AU2 XR6 VCT

Power: 148 rwkw

Location: Auckland
New Zealand

I apologise in advance if this has already been answered, but I couldn't find it.

I have an EF XR6 wagon with stock engine, EL GT snorkel, foam air filter. Exhaust is Coby headers (elimates cat) and stock 2.5" mandrel-bent Tickford exhaust: one resonator, two mufflers. I am upgrading the exhaust, looking for max performance across the rev-range, max fuel economy, not loud at idle or cruise, and no drone. Loud at WOT would be perfect. Yes, I know, I want it all. :D

I am pretty much settled on a Hooker MaxFlow muffler, as it gets good reviews and test results for max power and economy and quiet but deep note at low revs (but LOUD at WOT). But there's no point if the reso and rear muffler are bottlenecks.

Does anybody out there know what the stock XR6 reso and rear muffler do to the power and sound? Can I take one or both off and gain some power, without waking the neighbours up? Does replacing the rear muffler with a hotdog or resonator tip give better performance?

Thanks heaps.



95 EF XR6 wagon, 17" FTRs, DBA, QFM, KYB/Koni, AU block, ported EF head, SS Inductions, Territory intake, MLS gasket, milled, Franklin RH24B cam, Coby headers, no cat, Tickford 2.5", 2800rpm stall, J3 chip

Posted: Fri Mar 21, 2008 3:07 pm 
Getting Side Ways
User avatar

Age: 31

Posts: 11103

Joined: 15th Nov 2004

Ride: AU III XR8 Pursuit 250 ute

Location: Hobart
TAS, Australia

I'd remove the front resinator and replace the muffler as your looking to do. Check out the front resinator see if it's straight through. If it isn't then change to a better flowing hot dog or rear resinator if your not after big noice.



Heaps of performance EF/L parts for sale, including supercharged VCT motor!

2002 Ford AU Series III Falcon XR8 Pursuit 250 ute - 5.6L of V8 Windsor!

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