Should RS4 be faster than stage 1 8p S3?

[P_G]

I do know that I am one of a few people who have done the S3 to S4 to RS4 transition and I don't believe any of us have gone back again.

Was that the new S3?

Nope, old 8L S3 225 OEM then mapped.

[Adam]

wow, how do MRC take an 2.0lt S3 to 420hp?

[Nige_RS4]

wow, how do MRC take an 2.0lt S3 to 420hp?

See Mihnea's signature - larger turbo, injectors & exhaust + ?

Sorry, off-topic I know

[iana74]

I went from S3 to RS4, mainly due to needing more space admittedly, and the RS is appreciably quicker. You do need to drive it differently though as mentioned above.
Also it's not all about the straight line speed, IMHO the RS has a significantly better ride and feel to it too, as indeed it should considering the premium I guess!

[DavidRoss]

B7 RS4 kerb weight = 1650kgs = 254hp/tonne (420hp std)
8P S3 kerb weight = 1495kgs = 207hp/tonne (310hp modified)

So the RS4 should be noticeable quicker (but like Les said, you will need to use all the revs)

But with a bit of MRC magic ----> 8P S3 kerb weight = 1495kgs = 280hp/tonne (420hp upgrade)

My point is though it doesnt look like it is 254hp/tonne as dont most Rs4s make 370 odd hp. Absolutely love the look of Rs4 thats why I came on here to get some buying advice. Its here i became aware of the power deficit problem and got me thinking that 34k is ALOT of money to me. I want 414hp or MORE not 370hp, thats what i'm paying for right?

[P_G]

That 370 bhp figure is very subjective though, like a blind man to chose a colour to paint you your room. Just because rolling roads says 370bhp that isn't the case as you will read from the exact same threads that say RS4's are down on power.

Like said, test some other RS4's, still not convinced, don't buy.

[Les]

David don't get hung up on the power issue. Most forums have reams of threads about being down on power. When I had an STi PPP it was listed as 301bhp but people kept getting 270 - 290bhp on RR's.
The car was fast, plain and simple
RR's don't replicate real road driving conditions and most performance cars nowadays have clever electronics that will curtail power if the air supply is wrong or for numerous other reasons If you were in a RS4 up against another one on a drag strip and both were the same but one was much slower then yes, you have an issue most likely.
RR's are good for vanity but crap for sanity

I believe there are some issues on a few cars and that's not right and Audi should address it but these cars are sublime and you need to understand that these are genuine super cars made into practical saloons so some compromise must be expected

Also don't make the mistake of comparing a standard car to one that has been tinkered with, that's like comparing apples with golf balls...... they just don't match. The standard RS4 is a class product and will show a clean pair of heels to most things on the road but also remember that speed is just part of it's arsenal

[PetrolDave]

My point is though it doesnt look like it is 254hp/tonne as dont most Rs4s make 370 odd hp.

According to some rolling roads, but not according to 1/4 mile times, 0-60 times and the "arse dyno".

[A20LEE]

That 370 bhp figure is very subjective though, like a blind man to chose a colour to paint you your room. Just because rolling roads says 370bhp that isn't the case as you will read from the exact same threads that say RS4's are down on power.

Like said, test some other RS4's, still not convinced, don't buy.

a 414bhp M3 does make 416bhp on the rollers tho' so Audi is definately short changing B7 owners. Heres a test by supersprint.

http://www.europeancarweb.com/tech/epcp ... ssure.html

[aidanjaye]

I think RRs need to be taking with a pinch of salt - their are to many variables.
Also engine to engine will be different - remember 5% of 400 ish horsepower
is 20 bhp.

From a motorcycle background - power/torque very much depends on how an engine is treated from new. Thrash it like you stole it and the engine will be very healthy on the power front but will go bang much earlier than a well run in engine (the difference can be 5-10%)

[PetrolDave]

a 414bhp M3 does make 416bhp on the rollers tho' so Audi is definately short changing B7 owners. Heres a test by supersprint.

http://www.europeancarweb.com/tech/epcp ... ssure.html

That doesn't prove that the RS4 isn't generating the claimed power. RS4's that "appear" to be down on power according to RR's post identical performance figures to other cars that post 400+ bhp on RR's - so it appears that either the ESP/TC gets confused on RR's or the conversion factors used on RR's are incorrect.

Please let's stop all this focus on RR figures - if your RS4 goes as fast on the road and race track as a car with 414bhp and weighing 1700kg should, then it's making 414bhp - whatever an RR says.

[Gazzer68]

Seems to me that rs4's Electronic Differential Lock is causing the problem, can't be switched off.

[UNI555]

"Please let's stop all this focus on RR figures - if your RS4 goes as fast on the road and race track as a car with 414bhp and weighing 1700kg should, then it's making 414bhp - whatever an RR says"


Well said PetrolDave, and here's a quote from ArthurPE on another thread..

"if the car runs ~13 at 107 mph and weighs 4100 lbs loaded, it's making >400 HP...period"