Stock SP20 muffler musings

woofy · 15-01-2006, 07:35 PM

A friend got a muffler made up for an SP20 Astina so it bolts straight on and the stock one can be swapped if needed (SABBAI). I was wondering what the stock one is actually like flow wise and whether replacing it would cause more restiction or whether the stock one is pretty ordinary anyway. Any thoughts?

twilightprotege · 15-01-2006, 11:09 PM

stock muffs are always insanely restrictive because of noise requirements

woofy · 16-01-2006, 12:33 AM

Quote:

Originally Posted by twilightprotege

stock muffs are always insanely restrictive because of noise requirements

At this time of night, there are so many ways I could go with that statement

woofy · 18-01-2006, 12:30 AM

anyway I'm guessing that if its slightly louder it should be ok noise wise and should be less restrictive?

MitchEG · 18-01-2006, 01:03 AM

i put an axleback magnaflow (straightthru) muffler on my car and i reckon the reduced restriction is noticable, it diddnt really make the car feel faster, just better flowing higher up in the rev range, free-er revving. Magnaflow has a great tone (the best i have heard in my opinion) and its not overly loud either, everyone elses seem to be louder, except GAV with his new x-force that is almost like stock. But my lowish noise level could be due to the stock piping up to the axle keeping things quiet.

chicaboo · 18-01-2006, 01:22 AM

Yes I am very happy with the XForce twin-loop, best accidental find of all time. But it's kind of dissappointing in a way, since I don't hear anything from it, it'd be nice to have some sort of tone. The only real noise I get is induction drone from the CAI at higher revs, and maybe some ringing from the header and larger pipework up the front...

Gav.

arden · 18-01-2006, 08:57 AM

Quote:

Originally Posted by chicaboo

Yes I am very happy with the XForce twin-loop, best accidental find of all time. But it's kind of dissappointing in a way, since I don't hear anything from it, it'd be nice to have some sort of tone. The only real noise I get is induction drone from the CAI at higher revs, and maybe some ringing from the header and larger pipework up the front...

Gav.

ohoh got any pics mate???

twilightprotege · 18-01-2006, 09:41 AM

yeah check out his readers ride (hahahahaha - bloody slacko

)

arden · 18-01-2006, 10:13 AM

its empty!

chicaboo · 18-01-2006, 10:27 AM

Go away, car's not finished yet!

arden · 18-01-2006, 10:31 AM

boooooooooooooooooo

woofy · 18-01-2006, 10:46 AM

gavs too busy riding around in his kart....

15-01-2006, 07:35 PM	#1
woofy Senior Member Join Date: Feb 2005 Location: Melbourne Car: Race Blue RS Octavia hatch, Black Santa Fe Elite Posts: 826 View Photos By: woofy	Stock SP20 muffler musings A friend got a muffler made up for an SP20 Astina so it bolts straight on and the stock one can be swapped if needed (SABBAI). I was wondering what the stock one is actually like flow wise and whether replacing it would cause more restiction or whether the stock one is pretty ordinary anyway. Any thoughts?

18-01-2006, 10:13 AM	#9
arden Senior Member Join Date: Mar 2003 Location: Sydney Car: Suby Posts: 1,280 View Photos By: arden	its empty! __________________

18-01-2006, 10:31 AM	#11
arden Senior Member Join Date: Mar 2003 Location: Sydney Car: Suby Posts: 1,280 View Photos By: arden	boooooooooooooooooo __________________

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15-01-2006, 11:09 PM	#2
twilightprotege Driving a faster car now! Join Date: Oct 2003 Location: Work, always at bloody work... Car: Lotus ....... . Posts: 5,217 View Photos By: twilightprotege	stock muffs are always insanely restrictive because of noise requirements

18-01-2006, 12:30 AM	#4
woofy Senior Member Join Date: Feb 2005 Location: Melbourne Car: Race Blue RS Octavia hatch, Black Santa Fe Elite Posts: 826 View Photos By: woofy	anyway I'm guessing that if its slightly louder it should be ok noise wise and should be less restrictive?

18-01-2006, 01:03 AM	#5
MitchEG AstinaGT Regular Join Date: Mar 2005 Location: Brisbane, South Car: Cibicu Posts: 324	i put an axleback magnaflow (straightthru) muffler on my car and i reckon the reduced restriction is noticable, it diddnt really make the car feel faster, just better flowing higher up in the rev range, free-er revving. Magnaflow has a great tone (the best i have heard in my opinion) and its not overly loud either, everyone elses seem to be louder, except GAV with his new x-force that is almost like stock. But my lowish noise level could be due to the stock piping up to the axle keeping things quiet.

18-01-2006, 01:22 AM	#6
chicaboo Senior Member Join Date: Sep 2004 Location: Logan prefecture Car: Touge monster Posts: 7,585	Yes I am very happy with the XForce twin-loop, best accidental find of all time. But it's kind of dissappointing in a way, since I don't hear anything from it, it'd be nice to have some sort of tone. The only real noise I get is induction drone from the CAI at higher revs, and maybe some ringing from the header and larger pipework up the front... Gav.

18-01-2006, 09:41 AM	#8
twilightprotege Driving a faster car now! Join Date: Oct 2003 Location: Work, always at bloody work... Car: Lotus ....... . Posts: 5,217 View Photos By: twilightprotege	yeah check out his readers ride (hahahahaha - bloody slacko )

18-01-2006, 10:27 AM	#10
chicaboo Senior Member Join Date: Sep 2004 Location: Logan prefecture Car: Touge monster Posts: 7,585	Go away, car's not finished yet!

18-01-2006, 10:46 AM	#12
woofy Senior Member Join Date: Feb 2005 Location: Melbourne Car: Race Blue RS Octavia hatch, Black Santa Fe Elite Posts: 826 View Photos By: woofy	gavs too busy riding around in his kart....