SLK-Class (R171) 2004-2010: SLK200K, SLK280, SLK350, SLK55, SLK55 Black Series

SLK/R171: Will SLK 350 have 306hp motor?

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Old 08-17-2007, 02:00 AM
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i535
Will SLK 350 have 306hp motor?

Just seen in other thread that new SLK will gain a lot power. It could be cool, so I put 09 SLK 350 in my shopping list..
Old 08-17-2007, 05:35 AM
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2013 650i Coupe, 2010 IS250 AWD, 1999 S500
We should know next month when it is shown at Franfurt, if they don't wait till L.A. or Detroit, but I'm thinking Franfurt since the SLK is due for a facelift.

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Old 08-17-2007, 05:01 PM
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'12 C204 C250, '05 SLK350 (sold)
That sucks for us 2005-2008 SLK350 owners.

Time for Supersprint headers + ECU. 268bhp -> 315bhp (our 268 is actually underrated since people dyno our stock engines at ~282bhp). 15-20hp gain from the headers, and another 15hp or so from the ECU. That should bring our 0-60 times down to about 5.0.
Old 08-17-2007, 08:03 PM
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That's what I've been hearing, just wait and see.
Old 08-17-2007, 11:21 PM
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SLK 350
so, what's now?
if you have a car has 270 HP, that would be considered a "slow" car?
because my cousin's sister's Nissan has more than that HP, HA!
Old 08-18-2007, 10:09 AM
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Originally Posted by lucky6600
so, what's now?
if you have a car has 270 HP, that would be considered a "slow" car?
because my cousin's sister's Nissan has more than that HP, HA!
But it's probably slower, I don't mind 306bhp, but would like to see it 200lbs lighter. That would be ideal for performance.
Old 08-23-2007, 01:41 AM
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how much are them supersprint headers?
Old 08-23-2007, 04:45 PM
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SLK 350
where can we get the ECU as well? how much?
Does anybody have it now?
Old 08-28-2007, 01:24 PM
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I thought superspring headers were like two grand.
Old 08-28-2007, 11:50 PM
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Originally Posted by lucky6600
where can we get the ECU as well? how much?
Does anybody have it now?
Speed Innovation ECU Tuning for the SLK Class (Select Model)
[SI-170171-02] $499.99


Available Options:
Which Model Is Your Mercedes?: SLK230K I4 2.3L SLK280 V6 SLK320 V6 SLK350 V6 ( + $200.00 )SLK32 V6 K ( + $500.00 )SLK32K ///AMG V6 ( + $500.00 )SLK55 ///AMG ( + $700.00 )


Speed Innovation ECU Tuning is an upgrade designed for improving the performance of your fuel injection vehicle. Speed Innovation Engine Performance Tuning allows the owner of the vehicle the opportunity to get the true performance potential out of their vehicle without performing major modifications.

$699 for the SLK360 V6, if you live in Cali, they'll give you a before and after dyno's free.

Here's the link.
http://jlevistreetwerks.com/store/Me...3e883f0afa7a7b

Supersprint heades are $2,600 I believe.
Old 08-29-2007, 12:42 PM
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'12 C204 C250, '05 SLK350 (sold)
Supersprint headers are about 1800, and probably about 200 to install. I thought Speed Innovations had the ECU tuning for 549?
Old 08-30-2007, 11:13 AM
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Originally Posted by slktyperice
Supersprint headers are about 1800, and probably about 200 to install. I thought Speed Innovations had the ECU tuning for 549?
That was intro price, I'm sure you can asked them for that price.

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