Boost Car's Performance
Super Member
Joined: Nov 2004
Posts: 588
Likes: 1
'98 E320 4Matic, '85 380SL
For more HP, sell your E320 and buy an E430 or E55. The E430 was available with 4matic starting in 2001. You can buy a performance ECU chip for your 320 for less than $1k that will give you a few extra HP, but I'm personally not convinced it does anything good for the longevity of your motor. Replacing your spark plugs & air filter may improve performance if these items are worn. You can buy a performance exhaust system, but they usually give up low end torque for high RPM power.
For better handling, replace any worn suspension rubber and swap out the stock rims/tires for 17" 235/45/17 or 18" 235/40/18. It's tough to find suspension mods on the 4Matic b/c of the unique front suspension (front axle shaft runs through the coil spring).
For better handling, replace any worn suspension rubber and swap out the stock rims/tires for 17" 235/45/17 or 18" 235/40/18. It's tough to find suspension mods on the 4Matic b/c of the unique front suspension (front axle shaft runs through the coil spring).
