2008-2013 Cadillac CTS Performance Mods Discussion, Attention any magnaflow users in Cadillac CTS Second Generation Forum - 2008-2013; Do any of you who have a magnaflow exhaust notice a rattle when the system is cold? Sounds like a ...
Automobile(s): '08 CTS Black Raven/Ebony 3.6DI FE2 6-speed manual
Re: Attention any magnaflow users
Originally Posted by ajazolino
Do any of you who have a magnaflow exhaust notice a rattle when the system is cold? Sounds like a loose baffle? This is my second system and it has the same Noise. Kinda annoyed...
Is yours a Catback or axle back? If its the Catback then I had one on my 2008 which should be the same kit as the 2009 - no cold rattle for me but the drone at highway speed @ the mid-2000's (manual + 3.6 DI) was too much so off it came after 2 weeks. (shameless plug - I have a classified ad for the full kit if anyone interested :-)
A thought, as I had run into this with the initial installation even though advertised as a straight bolt on, may be stupid question, but have you listened outside underneath at start up, if so, where's if coming from exactly?
I mention this as I had the opposite problem myself right after installation - it was fine at start up, but after warming up 20 minutes or so there was an occasional rattle - turned out the that the rubber on the rear hangers warmed up enough to be more pliable - some additional hanger bending fixed that - the final diagnosis took awhile as waiting at the muffler shop let everything cool down and firm up again enough to make reproducing it difficult. Could this be coming from the outside instead of inside the pipes?