No, but cold air intake tubes with a K & N filter are worth while. And a cat back exhaust system, I think "Borla" makes one for your SL500. Choose a hi-flow duel outlet system. All this can be pricey. Cheaper mods would be E3 spark plugs, good spark plug "Nology" braided solid center wires, & of course good Sunoco 91-93 oct. gasoline, Mobile 1 synthetic motor oil change & filter too. Jimz
Full stainless exhaust system won't cost the earth and shop around for an ecu remap.
you have a premium luxury car and you are trying to find cheap performance? those two categories do not mix. speed costs money. it costs more on a high end car.
Hey madmopar (nice name by the way what are you 12) Sorry buddy but you're wrong. Being able to figure out what changes that can be made to improve performance and do it yourself is the answer. It sounds like you just bring your car to someone else to do it for you. I'm on this site for suggestions from people that are interested in helping. Thanks for your help.
Stainless steel exhaust? It will cost a fortune, but will last a long time. Opt for regular steel pipes ,(Flow Master etc.) unless you plan to keep it forever. Exhaust shops will even make / bend you pipes. Making your car efficient (like breathing) WILL give you performance no matter what the make & model. Cold air DIY plastic kits are easy to install with a K & N air filter. Great satisfaction from saying, "I did that". Don't let the know-it-all "ying-yangs" discourage you. Jimz, old school retired aircraft tech / hot rodder.
Thanks James. I just got the name of a reliable muffler shop that does work on cars like ours. I'll order the cold air system today. And, you're right there's nothing like doing the work yourself and the satisfaction follows every time you're in the drivers seat.
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