171 performance section

Performance MODS for the R171

Tuning and Performance mods

www.slkworld.com

Right where your post is.

 

There is the traditional ECU upgrade.
A device for faster acceleration.
Better flowed headers, racing cats, exhaust systems.

Not forgetting brake and suspension upgrades to control any extra power.

And a host of other goodies.

The real question is how deep your pockets are.

 

Thanks for the reply
How do I upgrade the Ecu?
Where can I find aftermarket headers?

 

you will need to find ecu tuner locally.

Headers, try Kleemann site and similar.

 

1 ECU upgrade taking it to circa 205bhp
2 performance rear exhaust system
3 Manifold is available [ Kleemann ]
4 K&N Air Filter or other Brand
5 Injectors ?

 

@Delucas Like Myk said--deep pockets required. Can you give her a (individual) ballpark cost on those before too much effort is expended?

 

Ecu upgrade be the better gain as such circa £200-£450 depending on who you go with and before & after rolling road results .

K&N Air filter circa £45- £65
Kleemann Manifold Circa £695 plus vat
rear Exhaust system £450 - £900 Depending on Brand

 

Thanks guys. I want to do the headers. Are there any Kleenman alternatives?

 

Maybe you should start by outlining your specific performance goal(s)... and your budget? Here on the SLK forum you will find answers to all of your performance needs... but it will cost plenty bcos you are among enablers, so be warned

 

Probably, but not my field.

Try a site search.
Failing that do a web search.

Not many have done this, but there are some.

 

I think I’d be happy with 220~230hp if this is what 184hp feels like now.

I’m thinking headers, a tune and k&n filter... I will be satisfied with wherever this put me.

Around $2000 should do that right?

 

That plan (headers, tune + k&n) and budget sounds pretty reasonable... to start... don't forget the axiom around here... modding is a disease... never ends... good luck with the project, and pls post progress reports here as well.

 

Go with Kleemann K2 Kit:

The boost kit consists of ECU tune, a new, larger diameter, lightweight crank pulley a high flow air filter and high flow exhaust header with steel sport catalyst.

I'm a happy camper!

 

op wont req the larger diameter / lightweight crank pulley as the facelift reduced size of supercharger pulley etc .

edit : meant crank pulley

 

Not sure what the price of SLKs is where you are but here in the UK you could just sell yours and get the same year SLK 300 for the same money, that would give you 231hp for no cost.

 

Remember cars in certain countries have to meet strict criteria engine size etc
so what used to be in the carribean as an example used to be ........
A few years back, the customs duty for imported used vehicles is listed below:
• 30% for vehicles with engine size of not more than 2000cc

so it paid to import the smallest engine size possible

hence why most cars are very small cc as the govts would not allow bigger .

hence why the op just wants to squeeze a little more power out of the SLK which is understandable .

I think in some Asia markets its the same requirements .

so buying bigger is not an option for many .

plus no harm in tweaking and squeezing a little more bhp from our beloved long ownership of our SLK. ??

 

 

Right on Delucas
You’re 100% correct