Dyno Results

All dyno runs were performed on a Dyno Dynamics All-Wheel Chassis Dynamometer at Vishnu Performance Systems.

6-Speed HP Progression			Tiptronic HP Progression
Stock/Stock DP	168whp		Stock/Stock DP	164whp
Stock/Open DP	187whp		Stock/Split DP	180whp
Stock/Split DP	190whp
MTM/Stock DP	202whp		MTM/Stock DP	208whp
MTM/Open DP	223whp		MTM/Split DP	235whp
MTM/Split DP	227whp

For those of you who are skeptical, take a moment to look at the websites of other suppliers of downpipes for the Audi S4. None of them have provided dyno charts with definitive gains to show an increase with their products. Our question to you is, “If you’re going to spend this type of money on a product, don’t you want proof it works as advertised?” We at TantrumWerks & Fast Intentions thought so too!

	6-speed Modifications MTM Stg. 1, Gen. 2 ECU (551 A) Milltek 3" single cat-back exhaust Bosch 110 BPV’s Samco Silicone Hose Kit Chevron 91 Octane Gas		Tiptronic Modifications MTM Stg. 1, Gen. 2 ECU MTM 2.75" single cat-back exhaust Fast Intentions custom 2.5" Y-pipe Chevron 91 Octane Gas

Note: “Open DP” on the 6-speed dyno charts is used to describe a prototype downpipe that was created & tested on the same car the split downpipes were tested on. The Open DP was an open-mouth design with a mouth diameter of 3 inches. This pipe tapered down to a diameter of 2.5 inches through the flex joint. Both downpipe configurations used 400-cell cats by Car Sound Exhaust System, Inc. For reference, the charts show HP & Tractive Effort, not Torque.

One more benefit to note - with the cats installed, you will pass an emissions test if one is conducted on your vehicle.