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Originally Posted by J.Seven
X5Jay, does your exhaust sounded like marbles in the pipes at higher RPM's after the X pipe mod??
Read the thread above to see what I´m talking about :
http://www.xoutpost.com/x5-e53-forum/...highlight=pipe
How about long time reliability, can this X pipe deliver a proper exhaust back pressure, at very high RPM??? All of you that made the X pipe mod didn´t thougth about this question?
I am interested on doing this mod, but I´m afraid of ended like MrLabGui. He took out the X pipe and went back to stock resonaters.
Is the X pipe just a crossover pipe, if so, i think a good shop can make this X pipe fo less than 80 usd.
J.Seven |
No marble sound at all with mine. I do get a slight bit of gurgling and popping on a cold day after I've shut the X down for a while and then re-start and drive off again - but it's a good sound, not a marble sound at all, and it doesn't happen in the warm weather at all.
As for the back pressure question - I believe that's what the X-Pipe's designed to do - add a bit of back pressure where going with plain straight pipes wouldn't do that. As mentioned in my little write up, the sound change is very subtle compared to stock, but it's certainly there - a little deeper and sportier IMO. No change in power - not more and not less.
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'08 335i Coupe - Barbera Red / Saddle Leather / Light Poplar Wood / 6spd Manual
Options: Sport, Premium, Cold Weather, Comfort Access, Active Steering (awesome!), Power Rear Shade, IPod Adapter, Navigation w/IDrive
Mods: M6 Wheels, Split Armrest, M-Steering Wheel, Euro Light Switch w/Rear Fog Lights, Short Shift Knob w/Matching E-Brake Handle, Clear Reflectors, CDV, Clear Bra
Retired:'04 X5 4.4i
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