if i installed dual flowmaster exhaust on my 04 f 150 will it void my warrenty.

 

I am not sure personally but I'd call them anonomously and ask the dealer and at least 2 others to collaborate the answers....

That way you have 100% knowledge and you will know for fact which way to go...

 

Many dealers sell new, modified trucks with aftermarket exhaust systems. It doesn't void your vehicle warranty. The parts that you replace will not be warranted. Otherwise, they have to prove the part caused a problem to deny a claim.