FI Exhaust vs Weistec
Thread Starter
Newbie
Joined: Feb 2020
Posts: 3
Likes: 0
E63
FI Exhaust vs Weistec
Got the following two exhaust solutions I'm debating on which one would be better for my 2014 E63.
FI Exhaust: $6,300
Complete Catback FI Exhaust system including Mid X-Pipe, Valvetronic Mufflers, Quad Silver Tips and Remote Control System Module
FI Exhaust Ultra High Flow Downpipes
Weistec: $4,000
https://www.weistec.com/m157-downpip...t-e63-awd.html
Anyone have practical experience with either brand?
Much appreciated!
FI Exhaust: $6,300
Complete Catback FI Exhaust system including Mid X-Pipe, Valvetronic Mufflers, Quad Silver Tips and Remote Control System Module
FI Exhaust Ultra High Flow Downpipes
Weistec: $4,000
https://www.weistec.com/m157-downpip...t-e63-awd.html
Anyone have practical experience with either brand?
Much appreciated!
Super Member
Joined: Nov 2010
Posts: 693
Likes: 152
From: USA
m157 SL63
The Weistec power numbers must be comparing stock to tune + downpipes, and not just comparing to untuned + downpipes.
What is most important to you in an exhaust upgrade? Are you looking for the sound, and extra power is just a minor bonus? Or are you thinking this is the first step in upgrades for power?
What is most important to you in an exhaust upgrade? Are you looking for the sound, and extra power is just a minor bonus? Or are you thinking this is the first step in upgrades for power?
Senior Member
Joined: Jul 2018
Posts: 456
Likes: 151
E63s
Save your money and get downpipes and resonator replaced with H pipe. You won’t regret it.
Junior Member
Joined: Feb 2020
Posts: 57
Likes: 22
From: Raleigh,NC
E63S
I did the Weistec modular pipes and am on a Renntech tune and sound is perfect- meaning, everyday cruising is bold and people know there's something there with the spool sounds and low grumble and most importantly you're not pissing off the neighborhood at low RPM. But on WOT, it is turning all heads on the highway- great V8 roar and some snarl and pops when letting off.
If you are still dissatisfied and want even louder, you can attack the resonator. And if that is still too tame (having all the people around you pissy with the noise), then you attack the mufflers.
Joined: Jul 2006
Posts: 6,760
Likes: 594
From: Seattle
'19 E63S, ‘16 CLS63 RIP, '09 E63 Gone, '06 M5 Gone, '97 Supra TT Gone
I would advise against FI anything. They are manufactured in Taiwan and are more marketing than substance. The materials are inferior and will not last over time. Source: my childhood best friend runs a car club based out of Taipei and knows the owner of FI.
