Originally Posted by bmwr606

the milltek exhaust i installed is 63.5mm (~2.5") from the v-band clamp all the way back to the inlet side of the 100mm (~3.9") tips, eliminating the sub 2" neckdowns completely

it eliminates both the second cat and resonator

the rear muffler looks similar to the stock muffler, but weighs less and you can see straight thru it ... it mounts exactly as the oem muffler

it is a little louder than stock at steady speed, but not enough to make conversation difficult and the tone is lower

at WOT it is quite a bit louder than stock, but still not loud enough to attract negative attention ... it sounds like a proper sports car

the pop/burrble is also louder and more pronounced

as for the performance side, the turbo spools much faster than the stock system ... at 1,800 - 2,000 rpm, flooring the gas, the car leaps forward like it did at 2,800 with the stock system

at any rpm, flooring the gas results in instant power

THERE IS NO DRONE AT ANY STEADY RPM/GEAR COMBINATION

for $1250 (i paid $1200) it is more expensive, but it is more than a cosmetic sound increase, there is a performance gain and i expect that will carry thru when i get a tune also (my tyrol FMIC is enroute as i write this ..
(thanks Hujan for the group buy on the R60 customized tyrol FMIC)

install was very easy, took less than 2 hours, including jacking the car (my first time putting the car on jack stands ... that alone took about 45 cautious minutes)

after the car was on stands, remove the cross braces that run under the exhaust, remove the v-band clamp, remove the 2 nuts on the front exhaust mounts, slide the rubber rear hangers off and remove the stock system in 1 piece

i assembled the milltek on the ground but did not tighten the clamps

hang the rear muffler using the stock rubber hangers, install the nuts back on the front mount but do not tighten yet and finally reinstall the v-band clamp but do not tighten yet

reinstall the cross-braces and tighten them

now jiggle / twist / adjust the system checking for clearance and then tighten the clamps ... i started with the v-band and worked back in stages EDIT last tighten the front mounting nuts

i used a 3/8" rachet to tighten the clamps ... it was not enough, i needed to retighten using a 1/2" ratchet

the system did move the first couple of heat cycles and needed to be retightened / readjusted ... CAUTION ... IT GET VERY HOT ... ALL THE WAY BACK TO THE TIPS!

link to picassa album of the installed milltek system

https://picasaweb.google.com/1043068...eat=directlink

any other question ... feel free to ask

scott

Originally Posted by Theta

Might want to call Will - he's on the road a lot, but he should be able to fill you in.

(305) 903-2684

They've done a dozen or so R60s after mine was the test mule. Everything's worked out very well without any issues (thus far).

I believe they sell a lot of the parts shipped now, whereas it used to be you needed to go down there. I'm sure it's still that way for some of it, but I've not looked into it in a while.

Originally Posted by Elmj

Hey Scott,
I've been going round and round on this exhaust question , I pretty much decided on the Milltek I can get it installed all in for $1350 , my question for you is on the Milltek site they are calling it a cat back exhaust and it appears to be the only one suitable for a stock(no tune) setup, is this what you have?

Originally Posted by bmwr606

yes, i believe so ... the downpipe is the cat

in this pic, on the left, you can see the post cat or downstream O2 sensor ... the v-band clamp is at the end of the downpipe, everything back from there is milltek

Originally Posted by Theta

Just as an FYI, any increase (perceived or actual) will come from the removal of the 2nd cat.

I'm a huge proponent of ditching the stock system in every way, but on the dyno with heavy tuning in several different situations, the N18 doesn't gain a thing from swapping the downpipe, let alone the factory exhaust, until after 240whp.

On the JCW with the 2.5", there's no restriction until over 300whp.

This is still a sound-centric mod in every way/shape/form. This coming from the guy who has spent thousands on downpipes, exhausts, and prototypes of everything in between. The N18 just doesn't care much until we get it breathing better at the front-end.

Originally Posted by etidd01

As a complete novice when it comes to exhaust systems, I have a few questions for those in the know (some of which are slightly off topic):

1) If I ordered my car, would the second cat still have been installed? I've heard yes and no from a few sources (unknown reliability). I don't have lifts to look under the car nor would I know what I'm looking for.

2) I'm seriously considering the JCW exhaust for my All4 (I like the idea of keeping full warranty in tact and Sewell has it at a pretty good price). Are there any HP gains from the system? I haven't been able to find any info.

3) The intent of the upgrade is both for sound as well as performance, so maybe something along the lines of the NM system is better (I haven't been able to find any good audio of a broken in system).

Thanks for the help.

Originally Posted by etidd01

Read that as well. Wonder if what he really meant was 'more noticeable ' gains since most companies claim at least some HP (which seems logical).

Originally Posted by Elmj

From everything I've read and heard, the Milltek is more what your looking for , but it seems from the post from Theta that any of these exhaust upgrades are purely for sound until you get the "front end breathing easier" , I've asked him to explain as this is beyond me, to me making it sound better is cool but a bit hokey if there's no performance added

Originally Posted by inclinelongboards

Theta,

How do I disable the ABS system without jacking everything else up? I am doing some rallycross and want the ABS and DSC disabled.

Thanks!
Shane

Originally Posted by Elmj

I know what you mean, most companies are claiming HP gains but I believe the feeling is that any of the exhaust systems that can make a legitimate claim remove the second cat, as I said I don't know much about this , and it would seem to me if that's the case a short pipe that replaces the Second Cat and Resonator would be an economical fix , except there's very little pipe to work with in front of the Second cat.

Originally Posted by bmwr606

the major restriction is the stock flex pipe it is between 1-7/8 to 2 inch id

any exhaust mods that do not replace the stock flex pipe may make a nice sound, but dio not expect any power

Originally Posted by inclinelongboards

What would you guys recommend to get a little more low end torque in second gear? I was also thinking about a front strut bar to aid in steering for rallycross.

Originally Posted by Theta

Tune or a downpipe. Possibly a hot-side smooth pipe (pipe muffler delete).

Originally Posted by inclinelongboards

What would you guys recommend to get a little more low end torque in second gear? I was also thinking about a front strut bar to aid in steering for rallycross.