BEST B7 RS4 UPGRADES: MILLTEK EXHAUST & CARBON CLEAN/DECOKE [PART 1]

We do love an Audi B7 RS4! Here's the first video in a 3-part series where we'll be adding some essential upgrades and maintenance... In Part 1, we perform a carbon clean/decoke on the legendary V8 powerplant and fit a ‪@MilltekSport‬ exhaust system to really set that engine note alive 💨
More info on our carbon cleaning service: www.regalautos...
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[@nitromorz7286]

Mines decated with flap delete and carbon clean, had 330bhp before and after 440bhp, sounds absolutely unreal , launch and crackle map all the way 🔥

[@RegalAutosport]

loveleh

[@andrewdavid6254]

What Don't do run flaps deleted as well guys

[@RegalAutosport]

Deleting the flaps isn't for everyone

[@Mexicanfab]

I was just coming to check comments out of curiosity. What would be advantage/disadvantage of a flap delete?

[@stenRS]

​@@Mexicanfabthe screws usually get loose and kills yout engine. That happend on my rs4, so i had to rebuild :-)

[@bobbutcher742]

@RegalAutosport. You are fitting what looks like 200cel Sports Cat as part of the full exhaust install. What is road legality (MOT etc) or is this a track car….?

[@RegalAutosport]

On this platform, this appears to be road legal providing it meets emissions.

[@bobbutcher742]

@@RegalAutosport hmmm, interesting as I have same platform and looking to fit sports cat but so much ambiguity around emissions etc, and I’m sure Milltex website says not road legal.

[@V0L0DImer]

both the old and the new exhausts crack disgustingly at high rpm, and I don’t understand how to overcome this problem, I’ve been fighting unsuccessfully for several years now =(

[@RegalAutosport]

eh?

[@3n3ly7m9]

Its best to not use straight through muffler design, it needs at least 4 resonators and then offset mufflers with plenty of baffling and fiberglass. Magnaflow and Borla have great exhausts, I would not recommend Milltec. On the B5 S4 I have, I've the Borla exhaust, no rasp, nice and throaty for a V6. But my friend has a Milltec on his S4, my my my... its god awful.

[@makalu69]

That could be my old car... loved that thing :)

[@RegalAutosport]

Awesome, well looked after car!

[@AlgorhythmKid]

The engine bay looks much cleaner than my B8.5.
I'm slowly doing bits. Doesn't help that I just had to drop 3k on a new mechatronic unit in the gearbox 😢

[@RegalAutosport]

It is a very clean example! Ooft mechatronic, sorry to hear that buddy.

[@AlgorhythmKid]

@@RegalAutosport Yeah that one hurt. Audi only quoted me 11k for a new gearbox. Bargain!