i have contacted aspracing.com and found that they offer a dampner upgrade that will add 30 HP to the sl55 wheels. you may want to check this out. part is $650.00.

Bye bye warranty or what?

T

i'm sure the warranty is not covered by asp racing. you play you pay.

Do you need the extra horses? If so, go for it. Mercedes cannot void the warranty. In the US, we have a federally mandated law - Moss-Magnusson - that specifically prohibits the warranty being impacted in any way unless the modification can be reasonably proven to have caused the failure to the stock part in question. For example, if you have software, and your transmission goes out, they cannot say that the warranty will not cover it. In reality many dealers will try to void the warranty, but once you get a manager and say "moss-magnusson" you will be covered.

Moss-Magnusson Federal Legislation Act.