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https://www.audi-sport.net/xf/threads/audi-s4-b9-milltek-hjs-200-cell-high-flow-cat-downpipe.424597/

Used for just over two years. Check Engine Light free throughout. Makes a noticeable difference in overall sound and pops, without all the bad smells and limp modes of a de-cat. Makes power on its own or stage 2 power with a remap / tuning box. Bad point is some of the cells have torn, not sure...

https://www.audi-sport.net/xf/threads/audi-s4-b9-dtuk-tuning-box.424596/

This is the Bluetooth app version. Map 3+1 was good for 3.5 Second 0-60 with a Milltek downpipe (also for sale in another post). One of the locking tabs is missing on a connector (Hasn't come loose for me, due to reusable zip ties provided), so priced to reflect. £200 ono, selling from East...

I'm taking a Milltek 200 Cell downpipe off my S4 in two weeks if you want to buy it from me...

Another BMW defector here, S4 saloon is being replaced with an M550i in March. Audi have nothing I want below RS6 money.

M340i is on the short list, hope to be able to drive one at the dealers when things return to some sort of normal.

I think my wifes Skoda vrs 245 is better made than my S4. Nothing rattles in that car.

Why did you sell the Leon? I expect you could have replaced it with plenty of other cars where 1st, 2nd and 3rd aren't much use?

? Get yourself a dragy it records everything in 10mph timing increments. You can slice the times up anyway you wish.

Meh, simple tuning box and one hardware mod on the petrol S4:

This thread is pretty cringey...

RE That 60 quid ECS item: I'm really not convinced the first 8 inches of pipe is a turbo inlet restriction, the remaining 12" worth that connects to the turbo itself looks to narrow yet further. Get some dragy times up. Adverting a power number tells us nothing about the real world performance...

I just unplugged the drivers side one. S mode opens the other side as before. Was too droney at 70+ otherwise. I don't have any codes according to Carista.

Which ZF gear box does the TDI S4 use now, it cant be the same as the petrol due to higher torque input and longer ratios required? From the ratios I can work out the actual wheel torque vs the petrol

This thread is about performance comparisons isn't it?

In addition to the extra weight of a cast iron block. Something I find that many diesel owners don't understand is gearing. When your redline is 4500 rpm rather than 6500 - 7000 rpm you need longer gear ratios or you will find yourself approaching redline in 8th at 80mph. This means the torque...

This is what a 13 year old RS4 V8 typically looks like unless its regularly de-coked. They are luckily if they make stock power from new.

I don't know why but official Audi S/RS 0-60, is just Like BMW m/M cars power figures. Sandbagged.

https://dragymotorsports.com/