SLK/R170: 320 power chip
I'm looking for about 50 horses, and I understand this is a good place to start.
Any suggestions would be appreciated
All told you're probably going to spend quite a bit getting 50 horsepower out of minor bolt-ons. You're best bet if you want more power is the Kleemann Kompressor kit. For 8,400 for the kit and another $900 for their higher boost crank pulley you could have as much or more power as a 32...
Then again, you could probably trade your 320 for a 32 for about that as well...
Just my 2c.
It's going to take more than a chip to add 50 HP to the 3.2L V6.
NP
The last I saw, some company was selling a chip for the 320 that they claimed added around 20hp but they took it off the market because the net gain was actually zero.
I just don't see how any chip is going to increase output by more than about 10hp without switching to super high-octane fuel (i.e. something higher than 94 in the USA).



