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  • flame magnet
  • Gold Donating Members
  • Member For: 17y 22d
  • Gender: Male
  • Location: adelaide hills- 'race air' central
  • 3 weeks later...
  • Donating Members
  • Member For: 18y 6m 23d

Mate I have split 3.5 dump, twin 2.5, 15psi, 373rwkw.

Was explained to me the 3.5 single would allow more power but also more noise and drone.

Myn is a daily and I can't fault it at all. Pretty quite too after warm up so draws no attention as well.

  • flame magnet
  • Gold Donating Members
  • Member For: 17y 22d
  • Gender: Male
  • Location: adelaide hills- 'race air' central

yeah twin 2.5 will make great power and quiet too! good for the family man.... tumbleweed2.gif

  • flame magnet
  • Gold Donating Members
  • Member For: 17y 22d
  • Gender: Male
  • Location: adelaide hills- 'race air' central

twin 3" is biiig. youll never have a prob with flow.... buttrock.gif

  • Member
  • Donating Members
  • Member For: 19y 19d
  • Gender: Male
  • Location: Sydney NSW

The Xforce 3.5inch system for utes flows very well, but its the rear muffler on the SEDAN 3.5inch system that is a restriction, we've made 500kws on these ute systems, but that's pretty much the limit.

I've started selling the 3.5inch system with a better flowing rear muffler, so its the whole Xforce system with a better flowing 3.5inch rear muffler. It does work out louder but isnt drony or too loud that you'll be pulled over.

The first few we sold had rear mufflers that required some exhaust shop welding to fit, but know we've jigged up the new muffler to bolt on as the Xforce one does.

The Xforce twin 2.5 systems have always been solid performers up to around 400kws.

The above are for BA BF

Xforce FG systems are well sorted and flow very well.

The 3.5inch system is fairly quiet, with a nice snarl up top, and the 4inch system is the one for those that like to be noticed :) Its got a big note that sounds awesome... so don't expect any runs at the lights lol the other guy will know your fast straight away.

  • Like 1
  • Banned
  • Member For: 14y 6m 16d
  • Gender: Male

Hmmmm. The "3.5 inch is quiet" but "the 4 inch has a big note" - that's a big difference for half an inch......but as you sell them I can't really question it.

And the louder the car is the more likely you will be taken on at the lights, not the other way around...... :spoton:

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