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How Quick is an RS4 in real world driving compared to cars such as the Focus RS or an Evo 9 FQ360?

I assume the turbo'd cars would have an advantage over the normaly aspirated engine until the RS4 engine builds to serious revs?

you have to catch it right, if your at 5krpm then you'll take em, esp when you go past 100

start at 2/3krpm, they will be gone and you wont catch em

Would adding a Miltek system make any diffirence to the way the RS4 performs further down the rev range?, i see it appears to be generally considered as one of the best upgrades to go for.

cat back systems are only really a noise upgrade, although I believe they can improve throttle response.

I think you need to look at cats and a remap before you really feel the benefit

Whats the cost of exhaust and map and what gain an you expect?

Full system brand new plus map inc vat your looking £2.5k - £3k

Or jus buy my cat back for £500 notes

Job done