[Aaron@Autosource]

Originally Posted by WaqasRiyami

Hello Guys...

I own a F10 535i 2012

i wanted o buy Cat-less Down-pipe, i rounded it to two choices , I liked the VRSF and EvolutionRacewerks

but there is one difference between them the VRSF doesn't have Steel Flex Section in the DP , But ER has a Flex Section...

What is the use of the flex section ? and which one do you think i should buy ?

--VRSF
http://www.vr-speed.com/vrsf-3-5-sta...e71-x5-x6.html
--EvolutionRacewerks
http://www.evolutionracewerks.com/node/240

Flex will absorb some of the flex and vibrations from the engine under throttle. Either will work, just depends if you have the extra $ for the flex or not. ER is definitely a bit nicer but VRSF will "work" just fine.