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post #1 of 4 (permalink) Old 12-05-04, 02:52 AM Thread Starter
shaynet's Avatar
Join Date: Apr 2002
Location: Gosford NSW Australia
Age: 64
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EL XR6 Exhaust

I recently bought an EL XR6 that runs sweet as but fuel economy is lacking. Put new plugs in but still the same. Mechanic did the smoke test where they pump smoke into the inlet looking for cracked inlet manifold gaskets etc but no leaks found. Car has only done 88000klms so its not likely a collasped cat. Exhaust was replaced from cat back by Midas before I bought it and I'm wondering if this is choking it. The car feels doughy off the line.
I noticed that XR6 had factory low back pressure exhaust system.

Does anyone know what diameter pipe the factory system was?

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post #2 of 4 (permalink) Old 12-05-04, 03:00 AM
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Re: EL XR6 Exhaust

i think its 2 1/2 on the xr6. but if u think it maybe the cat check it coz my mate had a collasped cat and he lost a heap of bottom end and fuel economy
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post #3 of 4 (permalink) Old 12-07-04, 04:18 PM
Join Date: Nov 2004
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Re: EL XR6 Exhaust

I think i have a similar problem , i had a cat back 2.5 with Pacemaker headers and was told my stock Cat was ok.. but i think it is choking things up... do i need a high flow cat? Can anyone recommend one for me??

98 EL XR-6 , Hot Chilli Red,
Factory Sunroof,
16" Tickford Wheels,
Full Pedders Sports Rider Suspension,
Pacemaker Headers with 2.5" cat back exhaust,
DBA Slotted Rotors w/ Bendix Ultimate pads,
Camber Kit fitted.
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post #4 of 4 (permalink) Old 12-07-04, 06:18 PM
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Re: EL XR6 Exhaust

the factory cat will flow just fine with mods so that the lips on either side are flared to 2.5inch inlet and outlet. I think, providing its not fubar'd

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