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Old 02-12-2005, 15:12   #1 (permalink)
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Read Pursuit standard exhaust

I have a pursuit Mk2 ute and I'm wanting to know how restrictive is the standard exhaust.

Has anyone here only changed their exhaust from cats back and picked up much power (not taking into account exhaust noise)?

Why I'm asking is, I'm thinking about putting Di Fillipo extractors and hi flow cats on, but thinking about leaving the standard exhaust to keep it quite (just to keep everyone thinking it's stock), But I dont want to keep it if it is going to be restrictive. I understand it may not flow as good as a 3" single sports system, but if it's only , say 1-2 kw's in it I may keep it.

DiFillopo advertise an 18 rwkw gain using their extractors, hi flows and 3" single, but it comes out at 94 db, and thats their base system, then they have a big one that gains 23-25 rwkw but is rather noisey.


I possibly will also be using ss induction cold air intake, BMC filter, Helix spacer and possibly undedrives and later on boss edit.

I will also post this in the exhaust section and ute section trying to get answers.

Mick
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*UPDATE * Pursuit has just run 11.763 and 116.18 mph making it Australias Quickest and fastest unopened boss as well as Australias Quickest and fastest naturally aspirated Boss
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Old 02-13-2005, 19:13   #2 (permalink)
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Re: Pursuit standard exhaust

[QUOTE=ratter]I have a pursuit Mk2 ute and I'm wanting to know how restrictive is the standard exhaust.

Has anyone here only changed their exhaust from cats back and picked up much power (not taking into account exhaust noise)?

Why I'm asking is, I'm thinking about putting Di Fillipo extractors and hi flow cats on, but thinking about leaving the standard exhaust to keep it quite (just to keep everyone thinking it's stock), But I dont want to keep it if it is going to be restrictive. I understand it may not flow as good as a 3" single sports system, but if it's only , say 1-2 kw's in it I may keep it.

DiFillopo advertise an 18 rwkw gain using their extractors, hi flows and 3" single, but it comes out at 94 db, and thats their base system, then they have a big one that gains 23-25 rwkw but is rather noisey.


I possibly will also be using ss induction cold air intake, BMC filter, Helix spacer and possibly undedrives and later on boss edit.

I will also post this in the exhaust section and ute section trying to get answers.[mick/quote]

Hi Ratter,

I've noticed you gain the most from the extractors (15-18rwkw) and proberly
only 5-8rwkw from the rest of the system. yes you are right the 3" system
sounds the best but you struggle to keep under the 90db limit, also you dont get any gains possibly small losses mainly down low(due to back presure) and these Boss motors need everything they can get down low.
Always been told duals all the way for manuals and dual into single 3" and back to dual out back for autos.
I own a Boss 260 and run pacemaker extractors into dual X pipe system all the way(redback) with std cats. At idle you wouldn't hardly notice it had the exaust done but as soon as you rev it it's a different story, sounds ausome.
From the power figures I'm get at the moment its saying that the exaust is not restrictive at all( and under the 90db limit).
Also those other mods you were talking about i have them all and still when crusing sounds very std except you can here her purr more but put your foot down and it turns into a roar.
What I'm trying to say is if the cops/epa went past you they wouldn't even blink an eyelid.
Do all that to a Boss 290 and you have one exciting motor car.
Well that my 2 bob, hope it helps.

Happy driving!
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Old 02-13-2005, 20:07   #3 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by ratter
I have a pursuit Mk2 ute and I'm wanting to know how restrictive is the standard exhaust.

Has anyone here only changed their exhaust from cats back and picked up much power (not taking into account exhaust noise)?

Why I'm asking is, I'm thinking about putting Di Fillipo extractors and hi flow cats on, but thinking about leaving the standard exhaust to keep it quite (just to keep everyone thinking it's stock), But I dont want to keep it if it is going to be restrictive. I understand it may not flow as good as a 3" single sports system, but if it's only , say 1-2 kw's in it I may keep it.

DiFillopo advertise an 18 rwkw gain using their extractors, hi flows and 3" single, but it comes out at 94 db, and thats their base system, then they have a big one that gains 23-25 rwkw but is rather noisey.


I possibly will also be using ss induction cold air intake, BMC filter, Helix spacer and possibly undedrives and later on boss edit.

I will also post this in the exhaust section and ute section trying to get answers.

Mick
Mick

I have DiFillpo Headers and Cats with Dual 3" on my XR8...there is no drone but it is loud especially when you lay the boot into it.

PM me if you want to know more or PM your phone no and we can talk about it if you want. I also have sound files of the exhaist note which I can email if you want.

Cheers

Brad
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Old 02-14-2005, 02:20   #4 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by XR8888
Mick

I have DiFillpo Headers and Cats with Dual 3" on my XR8...there is no drone but it is loud especially when you lay the boot into it.

PM me if you want to know more or PM your phone no and we can talk about it if you want. I also have sound files of the exhaist note which I can email if you want.

Cheers

Brad

Geez Brad your Boss must sound so mean when you give it a boot full with that dual 3" system as mine sounds pretty dam good with only 2.5" dual.
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Old 02-14-2005, 02:35   #5 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by Wade rocks
Geez Brad your Boss must sound so mean when you give it a boot full with that dual 3" system as mine sounds pretty dam good with only 2.5" dual.
...and lov'n it....
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Old 02-14-2005, 21:41   #6 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by XR8888
...and lov'n it....

Go the BOSS!!!!!!
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Old 02-24-2005, 14:05   #7 (permalink)
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Re: Pursuit standard exhaust

I am currently running after market headers and cats with the standard cats back on my XR8 ute. Getting the rest of the system in a week. Changed to a SS cold air and BMC filter at the same time. Certainly sounds better, induction and exhaust note but is still quiet. Certainly goes better too. Ute has a nice stealthy (probably shouldn't use that word) way about it. Quiet down low, roars away up top. Worth trying. Wouldn't hurt as if it's too quiet you can just slip a cats back on and try that, all the major work is done.
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Old 02-25-2005, 02:53   #8 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by Sunday
I am currently running after market headers and cats with the standard cats back on my XR8 ute. Getting the rest of the system in a week. Changed to a SS cold air and BMC filter at the same time. Certainly sounds better, induction and exhaust note but is still quiet. Certainly goes better too. Ute has a nice stealthy (probably shouldn't use that word) way about it. Quiet down low, roars away up top. Worth trying. Wouldn't hurt as if it's too quiet you can just slip a cats back on and try that, all the major work is done.

Would appreciate it, if you could post back here after the exhaust goes on and let me know your impressions, before and after dyno figures would be great, but understand not every one has access or money for a dyno run.


is the XR8 ute and pursuit exhaust different?
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*UPDATE * Pursuit has just run 11.763 and 116.18 mph making it Australias Quickest and fastest unopened boss as well as Australias Quickest and fastest naturally aspirated Boss
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Old 02-25-2005, 16:44   #9 (permalink)
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Re: Pursuit standard exhaust

XR8 ute and Pursuit exhausts are the same.
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Old 02-25-2005, 23:37   #10 (permalink)
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Re: Pursuit standard exhaust

Quote:
Originally Posted by bossxr8
XR8 ute and Pursuit exhausts are the same.

Thanks ,
I would have though FPV would have changed the exhaust :idunno:
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*UPDATE * Pursuit has just run 11.763 and 116.18 mph making it Australias Quickest and fastest unopened boss as well as Australias Quickest and fastest naturally aspirated Boss
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