Home  | About SurefloExhaust  | Contact Us | Feedback


Catalytic Converters

Catalytic Converters reduce the pollution that your car produces.

The ceramic biscuit has hundreds of long pin holes that the exhaust gas must pass through. The ceramic biscuit is coated with precious metals which heats up until it is red hot. This burns off all of the pollutants which are contained in exhaust gases.

Catalytic Converters eventually clog up, crack up and rattle, or melt down. They normally last for around 100 000km before they begin to effect the performance of your car.

Twin Cat Systems on V6's or V8's mean that each cat in now looking after only 3 or 4 cylinders instead of 6 or 8. Straight away this doubles the flow of exhaust gases and increases power enormously.

A twin cat system, sport system and performance chip on a VS V6 Commodore (90,000km on speedo) resulted in a Dyno Dynamics result of 123.5 rwkw which is an increase of around 26 rwkw.

It is important to keep your car tuned and serviced regularly as it extends the life of your catalytic converter. If your car is running too rich or too lean, it can cause the catalytic converter to superheat and meltdown. This can be caused by an incorrectly adjusted carburettor, faulty spark plugs or leads, faulty oxygen sensor, etc. Regular servicing can save you hundreds of dollars in repair bills.

Although most catalytic converters look the same from the outside, when you look at the cut open pictures you can see what the 'cheap' ones look like compared to the 'Good Quality' ones.

New “Ballistic" range of 5” round Stainless Steel Substrate Catalytic Converters


  • These cats have larger holes through them for increased flow
  • The stainless substrate is less prone to melting down
  • The stainless substrate does not crack like the ceramic substrate cats, so they are less prone to impact damage from speed humps and debris
  • Ideal for Heads & Cam, supercharged and turbo engines where increased flow is important

    Test Results - As measured by Rams Head Service – Windsor @ 28” of water

  • Measurements: -

  • 5” cat with 3” ends - 706cfm
  • 5” cat with 3.5” ends - 885cfm
  • 5” cat with 4” ends - 1015cfm

    We tested the “Magic Cat” and “Metal Cat” using their own 3” fittings welded to each end and compared the flow with our Ballistic Cat with 3” pipework welded to the ends and here are the results:

  • Magic Cat 4” body with 3” ends - 546.6cfm
  • Metal Cat 4” body with 3” ends - 629.6cfm
  • Ballistic Cat 5” body with 3” ends - 706.2cfm

    There are some rubbery figures going around. Magic advertise the flow of their 4” cat as 750cfm and their new 5” cat as 890cfm. These tests are obviously done with no ends on the catalytic converter. So if you compare the 5” cat from Magic @ 890cfm against our 5” Cat with 4” ends @ 1015cfm it shows ours flows 125cfm or 14% extra. This is extra performance.

    This cat is also available as a “Bolt-On” replacement unit for Nissan R32, R33, GTR, GTST, GTiR Pulsar, 180SX and S13 Silvia.

    Sureflo Exhaust - Unit 4 Slater Rd Cnr 20 Broadhurst Rd, Ingleburn NSW 2565. Aus  Ph: (02) 9829 3158   Email: sales@surefloexhaust.com.au