I'm getting a little old for hot rods so this will probably be my last.
The thing is a monster in little car clothes.
It is one of the most responsive and powerful engines I've encountered.
451 hp seems rather detuned for the engine however.
I don't want to spend a fortune of else I would have gotten a SL65.
Is there a processor only upgrade available?
I seem to remember reading of one for about 2900.00 but that seems a
little steep, as in wife would then want a new house.
I see no reason the engine couldn't put out a detuned 550 hp with just a
Typical American provincialism... :-)
2900 what? Yuan...?...
Why should a usenet group, especially one in English, be used by people of
only one country?
This group is a pale shadow of itself, and use to have many more people from
many more countries participating, but even so we are not all from one
Call Mecedes-Benz USA.
Sheesh. (To quote an Americanism...)
To reply directly replace 'nospam' with 'schmetterling'
"LilAbner" <-@Daisey.Mae> wrote in message
Doesn't have anything to do with anything.
Nt looked at the group before, I think< and generally most groups are
pretty much all North America or seem to be seen here.
I'm not on the computer that much, so I don't see where all the posts
Don't see that much from other Countries, except occasionally from
Canada, Australia, Netherlands and England , on other groups.
I don't spend too much time on the net though to see where everyone is from.
Don't take offense.
AMG says 457 hp. Anyway this does not sound detuned for at naturally
aspirated 6,2L engine - this would also be against AMG ideas.
You may gain a little hp by chip tuning - but always at some other
cost (chip tuning companies just don't tell which). I would trust the
... and I would be happy with what you've got.
By the way.... a reply from Denmark (which is not in US to my
I suppose you mean Renntech?
- chiptuning + 66 hp
- carbon fiber airbox + 12 hp
- stainless steel headers + 16 hp
- performance sound pipe + 10 hp
A totally 555 hp compared to standard 451 hp - which is +15% by chip
tuning ("without sacrifice") and +7% by air flow optimization in inlet/
So yes, you can do something by chip tuning. But is it really without
Sacrifices will for sure be fuel economy and pollution. So when you
say "undertuned", it is also depending what you want.
And you can be certain, AMG know what they are doing.
I fact the 6,3L engine (which is in fact only 6,208L) is made in a
number of different versions, where the 525 hp version is used for
most applications and the most powerfull being 571 hp for the SLS
"Gullwing", demonstrating the potential of the engine.
They also go for higher power outputs, but then they use the 5,5L
engine with compressor or turbos.
Optimum combustion ("stoichiometric") occurs at a certain fuel/air
ratio. Your engine has a compression ratio of 11.3, which is rather
high. In order to avoid destructive knocking, the ECU will retard the
ignition timing at full throttle, causing less than optimum engine
performance. Knocking can also be reduced by enrichening the mixture,
so ignition doesn't need to be retarded so much, causing better
performance in terms of power but less performance in terms of
This is what chip tuning is about. And this is where sacrifices come
in too, including risking the reliability.
If you solely want more hp, you can use the Renntech ECU or similar.
Or you can be happy with your perfectly engineered monster machine as
it is :o)
I haven't examined all the tuning differences but wondered if part of
the detuned state is marketing. They wouldn't want to undercut the E, S,
or SL series by offering the same output as the more expensive cars.
I would have bought an e but none could be found. The 5.5 with twin
turbos might be a little over stressed. Will have to wait and see.
I won't be trying to explore the limits of the 6.3 but would like to
have the best tune etc.
A computer upgrade is about all I would want to do. The exhaust and
intakes etc are nicely engineered for the package. 10 or 20 hp isn't
that much. A hundred, well that's different.
I would like to see the 550 to 570 range and no limiter. Of course that
would mean new Y tires. They should have put them on originally.
I wish I had stumbled across the 2 year old SL65 with 8,000 miles before
I found this one. Almost the same price.
I;m pleased with this car though.
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