2001 Slk 320 Mods/Performance upgrades - Mercedes Benz SLK Forum

Performance MODS for the R170 Tuning and Performance modifications for your SLK

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#1 Old 05-07-2018
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2001 Slk 320 Mods/Performance upgrades

I have a Slk 320 2001 and I was looking at the mods available. I looked at the pulleys and stuff but I figured it only makes power on the supercharged ones like the 230, slk 32. I recently changed my spark plugs, oil and doing most of the maintenance for this vehicle. I was wondering what mods do I add to add some more hp? I also looked at the air filters the k&n one but I've read it doesn't do much hp to your car.
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#2 Old 05-07-2018
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Unfortunately. you are limited on your 320
after pullies, and filters there is not much more

throw some techron in there

https://www.slkworld.com/off-topic/10...-tier-gas.html

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320 (M112)
Kleemann offers some of the best tuning solutions for the normally aspirated 320 V6 engine.The wide range of products for the supercharged

The normally aspirated 320 V6 M112 engine found in many early C, CLK, E, ML, S, SL and SLK models can have up to 270 HP and 360 Nm (267 lb-ft) of torque from our wide range of normally aspirated tuning products.

320 (M112)

320-K1: ECU tuning. Up to 240 HP and 335 Nm (248 lb-ft) of torque.

320-K2: K1 + high flow stainless steel exhaust headers. Up to 255 HP and 355 Nm (263 lb-ft) of torque. (NOTE: Not for SLK 320).

320-K3: K2 + super sport camshafts. Up to 270 HP and 360 Nm (267 lb-ft) of torque.
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#3 Old 05-07-2018
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After running the lanes of Cornwall it was obvious that the 320 has no issue keeping with R171 350s and 55s.
The 320 is the one taking the videos.


Unless you want to sprint etc I doubt it is worth the expense.

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#4 Old 05-08-2018
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Quote:
Originally Posted by Avel Du View Post
After running the lanes of Cornwall it was obvious that the 320 has no issue keeping with R171 350s and 55s.
The 320 is the one taking the videos.


Unless you want to sprint etc I doubt it is worth the expense.

@savcom
The 320 has petty good power and acceleration and keeps up with most things in day to day driving. However, if you are looking to increase the horsepower you won't get a lot more from the engine I'm afraid without spending a lot of money - for example, you'd need to look at upgrading the brakes as well as the engine as the brakes will rapidly become inadequate as you increase the power.

If you really really want the extra I'd look for a '32 as that supercharges and strengthens the engine, adds much better brakes and improves the gear change with a faster reacting TCU. And will probably cost you less overall.
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#5 Old 05-08-2018
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any driving improvement after the plug change? I am over due and wondering if its worth the effort.... I only drive no Sunday afternoon's, but was wanting to change them out and see if I get a little better performance, she seems sluggish.

Thanks - Andy
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Quote:
Originally Posted by Andrew Kingdon View Post
any driving improvement after the plug change? I am over due and wondering if its worth the effort.... I only drive no Sunday afternoon's, but was wanting to change them out and see if I get a little better performance, she seems sluggish.

Thanks - Andy

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#7 Old 05-08-2018
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Quote:
Originally Posted by Andrew Kingdon View Post
any driving improvement after the plug change? I am over due and wondering if its worth the effort.... I only drive no Sunday afternoon's, but was wanting to change them out and see if I get a little better performance, she seems sluggish.

Thanks - Andy
How many miles has yours done? It may be time to change the auto transmission fluid and filter.

I noticed more ready acceleration when I changed the plugs - at 96000 miles. I noticed even more when I changed the auto fluid and filter.
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#8 Old 05-08-2018
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Yes, but I didn't notice a difference - will do it again one more time this weekend to be sure. Thanks!
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#9 Old 05-08-2018
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Quote:
Originally Posted by savcom View Post
How many miles has yours done? It may be time to change the auto transmission fluid and filter.

I noticed more ready acceleration when I changed the plugs - at 96000 miles. I noticed even more when I changed the auto fluid and filter.


Good option - I doubt it was ever done. Picked up this little gem for 800 cash and have been slowly tinkering away at it. Fluid and filter may do the trick - plan on doing this and the reset again this weekend and see what we end up with.


Just a little apprehensive about the plugs - as I will flip the car in 6 -8 months when I get bored with it. Wife usually allows up to one car project and two motorcycle projects in our garage - and I am all out of motorcycles....


Thanks guys!
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