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Dual 2.5" Redback System with mafless tune. System replaced with a 3.5" system and tune touched up to suit.
The 3.5" had better down low power, same mid range and a lot more up top - 26rwhp gain.
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3.5" cat back system with mafless tune - 60rwkw gain.
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Holden Cruze
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DriftZ – 300zx Drift car, Turbo LS1 conversion.
Note the near vertical power and torque graph, which means instant acceleration. This dyno was done in 5th gear due to uncontrollable wheel spin and fish tailing in 4th gear. We had around 500kg of weight in the boot to minimise wheel spinning. The majority of this car was made in-house at Sureflo Exhaust. |
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Mazda 3 MPS Turbo
Before and after a Custom Sureflo turbo back exhaust system with Ballistic 100cpsi Racing cat |
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Nissan S13 Drift car
SR20 engine – bigger turbo, turbo manifold, custom exhaust |
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Dyno VE Ext Comparison
VE 6.0 litre A6 auto - comparison between 1-3/4” extractors and 1-7/8” extractors |
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VE Varex
VAREX Dual 3” power comparison between open & closed on VE V8 Commodore |
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Chrysler 300C
Chrysler 300C 5.7 litre before and after a Sureflo custom dual 2.5” exhaust system |
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Sureflo Short 4>1 extractors for VY2 – VZ 5.7 and 6.0 litre 1-3/4” primaries into 3” outlets
LS2 GTO 6.0 litre short 4>1 extractors comparing the difference between 1-5/8” short 4>1 extractors to 1-3/4” short 4>1 Sureflo extractors.
In 3rd gear the power increased by 9rwkw in the top end. When it was in 4th gear and allowed to wind out, the power increased to 257rwkw.
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VY Series 2 A4 Crewman
3½" Sureflo Exhaust, Sureflo Custom Computer Tune
Exhaust: 178rwkw, increase of 26rwkw.
MAF Tune: 193rwkw increase of 41rwkw over Standard.
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VX Gen 3 M6 Race Car
Stock Standard Engine, Standard Air Induction, HSV Headers, No Cats
3½" Sureflo Custom Exhaust, Sureflo Custom Computer Tune
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GTO M6 Commodore
Before - Redback Dual 2½" Exhaust
After - Sureflo Dual 2½" Exhaust with Merge |
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VX M6 Commodore
Before - DF Dual 2½" Exhaust
After - Sureflo Dual 2½" Exhaust
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VY R8 M6 Commodore
Before - Standard HSV Exhaust - 209.5rwkw
After - Sureflo Dual 2½" Exhaust, Cat Back with Merge - 228.1rwkw
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VX SS M6 Commodore
Back to Back Dyno Runs
MAFless Tune
Other Brand CAI - 218rwkw
Sureflo Exhaust OTR Direct Flow Intake - 238.2rwkw
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VX2 M6 Commodore
Other Brand Cold Air Intake - 239rwkw
Sureflo Exhaust Cold Air Intake - 249.6rwkw
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VT Senator 5.0L (5.7L - 355 Stroker)
3" Cat Back Exhaust - 149.7rwkw
Pacemaker Extractors - 161rwkw
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VY2 M6 Crewman
Standard - 167rwkw
4>1 Extractors, Hi-Flo Cats, Dual 2½" Exhaust - 195rwkw
Increase of 28rwkw and 600Nm Tractive Effort. (Pulling Power)
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VY2 M6 Crewman
Standard - 165rwkw
3½" Cat Back Exhaust - 178.5rwkw
Increase of 13.5rwkw
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VS V6 Commodore
Standard - 104rwkw
Extractors, Dual Cats, 2½" Sports System - 119.5kw
Increase of 15.5rwkw
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VS V6 A4 Commodore
Standard - 98rwkw
Extractors, Exhaust and Chip - 115rwkw
Throttle body and Spark Plug Leads - 125.1rwkw
Increase of 27rwkw and 600Nm of Tractive Effort. (Pulling Power)
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VY2 A4 SS Ute
Standard Exhaust - 183rwkw
Extractors, Dual 2½" Custom Exhaust, Custom Edit Tune - 221rwkw
Increase of 38rwkw and 1000Nm of Tractive Effort. (Pulling Power)
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VT Gen3
Standard Exhaust - 183rwkw
Dual 2½" Custom Sureflo system - 207.6rwkw
Increase of 20rwkw and 600Nm of tractive effort. (Pulling Power)
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2004 Coupe3 GTS 300kW 6sp Manual
Stock Standard - 228rwkw
4>1 Extractors, Cat Pipes, Dual 2½"
Custom Sureflo Exhaust - 253.5rwkw
25.5rwkw increase in power and 600Nm of tractive effort. (Pulling Power)
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VY M6 Crewman
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VY SV8 M6
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VX SS A4
Extractors, Dual 2½" Merge Pipe
Custom Sureflo Exhaust - 210.8rwkw
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VY SV8 M6
HM Bolt On Cats Back System = 208rwkw
Dual 2½" Patented Merge Pipe
Custom Sureflo Exhaust - 223.5rwkw
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VX SS M6 Sedan
Extractors, Custom Exhaust, Enlarged Cat Pipes
K&N Air Filter, MAF Pipes
NGK Iridium Spark Plugs and Magnecor Race Leads.
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CV8 MonaroBefore and After Exhaust System
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CV8 Monaro
Bolt On mods and Custom Sureflo Dual 2½" S/Steel Exhaust - 217rwkW
After tuning the computer - 244.5rwkW
Note: A 300kW GTS is around 215rwkW in standard trim, so this is a very good result for the owner.
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VX2 SS M6
4>1 Ceramic Extractors, Custom Dual 2½", Stainless Steel Exhaust, Cat Pipes
SS Inductions CAI, MAF, MAF Pipe, T/Body, K&N Air Filter
NGK Iridium Spark Plugs, Magnecor Race Leads
Note: Engines vary in power. This car made 242rwkW without heads and cam or LS1 Edit. We have seen cars with more modifications than this, with LS1 Edit and have made as little as 210rwkW. This is an exceptional motor.
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VX Berlina S/Wagon A4
4>1 Ceramic Extractors, Custom Single 3½", Stainless Steel Exhaust, Cat Pipes
SS Inductions CAI, MAF, MAF Pipe, K&N Air Filter
NGK Iridium Spark Plugs, Magnecor Race Leads
Note: This has the same modifications as the VX above except billet throttle body, yet it only made 208rwkW which is still a good result.
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VX Gen III Ute, Manual
- STOCK STANDARD
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VX M6 UteExtractors, 3" System, Cat pipes, Cold air intake, K&N Filter
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VX M6 UteExtractors, Dual 2½" System, Cat pipes, Cold air intake, K&N Filter
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VX M6 Ute
Extractors, Dual 2½" System, Cat pipes, Cold air intake, K&N Filter
Ported & Recalibrated MAF & Throttle body, MAF - T/body duct
Low Temp Thermostat, NGK Iridium spark plugs, Magnecor racing leads.
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