Exaust size

c0n13oX · Post by **c0n13oX** » Thu May 22, 2014 12:22 pm

Just curious what the size of the stock gpx exhaust is?

Post by **Vectose** » Thu May 22, 2014 12:30 pm

2.25" is the stock size and 2.5" is the optimum size.

c0n13oX · Post by **c0n13oX** » Thu May 22, 2014 2:39 pm

Goddamnit! When i got mine made up, i trusted the mechanics judgement and went 2.25... not happy.

Astron_Boy · Post by **Astron_Boy** » Sat May 24, 2014 8:59 am

You'd barely notice a difference except for a bit of sound.

Most of the time, placebo effect dictates.

Post by **bjk** » Sat May 24, 2014 10:10 am

Astron_Boy wrote:You'd barely notice a difference except for a bit of sound.

Most of the time, placebo effect dictates.

But without the extra 0.25 difference, how will we shave 0.001 seconds off our lap time around our block in the suburbs?

c0n13oX · Post by **c0n13oX** » Sat May 24, 2014 12:18 pm

Yeah its just noise

Daniel2019 · Post by **Daniel2019** » Sat May 24, 2014 2:33 pm

It does make a difference.

Post by **bjk** » Sat May 24, 2014 7:09 pm

Daniel2019 wrote:It does make a difference.

That's what she said.

Daniel2019 · Post by **Daniel2019** » Sat May 24, 2014 7:17 pm

More air in, bigger bang (she said that, too) and more air out = more power...

Intake, compression, ignition and exhaust. Improving on any of those things = moar power, because physics and science.

(and that's what Mazda school taught me)

MaxD · Post by **MaxD** » Tue May 27, 2014 11:25 pm

Don't forget the stock manifolds don't help with the air out. So I think the differences will be marginal.

FTO AUSTRALIA

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