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post #1 of 31 (permalink) Old 12-07-04, 07:22 PM Thread Starter
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exhausts

what do you guyd think??? is a 2 1/2 or 2 1/4 inch exhaust all the way threw?? which one is better for preformance??

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post #2 of 31 (permalink) Old 12-07-04, 07:47 PM
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Re: exhausts

What car do you have?

Go hard or go home!

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post #3 of 31 (permalink) Old 12-07-04, 09:50 PM
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Re: exhausts

Quote:
Originally Posted by harry
what do you guyd think??? is a 2 1/2 or 2 1/4 inch exhaust all the way threw?? which one is better for preformance??
More info please!!!

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post #4 of 31 (permalink) Old 12-08-04, 01:54 PM Thread Starter
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Re: exhausts

well i have an xr6 and i would like to know which one will give the greater preformance. i will be running it all the way threw with extractors. some fitters have told me that 2 1/4 is better but i dont think it would be.
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post #5 of 31 (permalink) Old 12-16-04, 12:51 AM
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Re: exhausts

you will have a 2.5 in system now - even if it is standard, everyone that puts a system ao a falcon goes for a 2.5 in

Have you driven a Ford....lateley?
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post #6 of 31 (permalink) Old 12-16-04, 02:11 AM
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Re: exhausts

I'd been meaning to ask the same question. 2 1/4 vs 2 1/2? Genie suggested there'd be bugger all difference in performance between the two and that the 2 1/4 would have a better note.

While I'm at it...

I'm looking at doing the exhaust and upgrading to a 2 1/2 or 2 1/4" system as I already have Pacemaker comp series headers and a hi flow cat on the thing. Problem is I don't want it too loud as the missus drives it a fair bit as well.

Anyone know of a combo that'd give a decent note without being excessively loud?

Cheers.

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XR6 Engine, Pacemakers, Hi-flow Cat, 2 1/2" Lukey sytem, XR8 intake, K & N Pod, LSD.
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post #7 of 31 (permalink) Old 12-16-04, 04:40 AM
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Re: exhausts

2 1/2 for sure, std 4.0L falcons have 2 1/4, and as said std xr's have 2 1/2. genies are an OK shop but go with the tried and tested 2 1/2...i cant say anymore

well also if ur gonna be doin anymore mods the 2 1/4 will be restricting it.

as for noise levels talk to a good exhaust shop, usually the bigger the muffler the less noise. I, for some reason remember dynomax selling a good muffler with low noise and high flow
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post #8 of 31 (permalink) Old 12-17-04, 09:06 PM
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Re: exhausts

also press bends flow more than mandrel bends

Have you driven a Ford....lateley?
Advertising has come along way-----But still not far enough!!!!!
** EL XR 6 -- Exhaust Technology System, PH4499, Stainless CAI, BMC Twin Filter, Koni Yellow, King Super Lows,DBA 4000 Rotors, Extreme Ceramic Clutch
Bugatti Veyron 16.4 ---- W 16 Configuration, Quad Turbo 1001 HP, 1250Nm, 4 Wheel Drive
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post #9 of 31 (permalink) Old 12-17-04, 09:12 PM
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Re: exhausts

Quote:
Originally Posted by redGhia
also press bends flow more than mandrel bends

Belive it or not I had an exhaust shop tell me this! Reckon he had excess stock that he needed to get rid of :s

Lets go find that Hotdog tree I planted

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post #10 of 31 (permalink) Old 12-17-04, 10:07 PM
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Re: exhausts

well it would be correct, A 90 degree 2 inch press bend will flow approx 1 cfm of air a minute compared to a mandrel of the same type

Have you driven a Ford....lateley?
Advertising has come along way-----But still not far enough!!!!!
** EL XR 6 -- Exhaust Technology System, PH4499, Stainless CAI, BMC Twin Filter, Koni Yellow, King Super Lows,DBA 4000 Rotors, Extreme Ceramic Clutch
Bugatti Veyron 16.4 ---- W 16 Configuration, Quad Turbo 1001 HP, 1250Nm, 4 Wheel Drive
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