My exhaust (obx) is the reverse -

highway at 70 - quiet.
highway heavy footed - the supercharger exceeds the exhaust (like yours).
35-45 - a deep note (heads turn) - a slight drone appears but not inside the cabin - noticeable when windows down and passing cars or a wall.
on the throttle - just plain loud which is okay because its during play time.

I'm gonna add resonator more out of curiosity than need.

your exhaust from the vids sounds just fine to me, I think those that think it is loud will re-phrase once you get that valve going . If the dyno numbers value (closed) are that good perhpas Randy will make a system without the valve? SOMETHING TO THINK ABOUT RANDY .

since the exhaust is still betaand you reference that all the exhaust comes out of one tip - perhaps a remus design would be in order? Food for thought.

Clearly your having fun and at the end of the day - thats the point and what matters.

bahamabart

 

Open question to all those knowledgeable about exhaust systems in general and specifically on the WMS exhaust. Do you folks believe this exhaust system will be Calif Emissions legal (ie; will it pass the SMOG2 certification in CA?)?

This would be a deciding factor for me, as the MINI is my daily drive. I'm very intrigued and playing wait and see on replacing my exhaust until more info is out from Randy et al. Also-> SpiderX do you know if Randy has talked at all about updating the maps for the UNiChip for this Exhaust system?

-Curious

Okeeton

 

used to be the cops would get on their hands and knees to check if your rod had Lake plugs...

 

I can't imagine once the production piece and numbers are finalized Randy NOT making the changes to the Unichip maps to be honest.

JLM-- I think my interest lies not with dissatisfation with other systems available, but with the passion and quality that Randy has shown to me and many others over the years with other items and parts. I really love the idea on this exaust that it can be quiet and still add performance day to day, but be a nasty beast on command. It'll certainly shake up some people in traffic that find the mini so darn CUTE.

 

Now that is funny

Ironically, I just got and email from Josh at Unichip....he is following the thread. When we were together and he did the tune on my car I told him that the exhaust and intake manifold were going on the car in a few weeks. He told me that the exhaust may not make a diffference but the intake manifold might....... Now that is specific to my car. Maybe Josh can shed some light on this.

On my car, Randy's guesstimates of performance for his suggestions have been very close to measured reality....his credibility is very high with me......when he told me about the success he has had with this design I got excited.......so far he has not exagerrated......

 

Exhausts cuttoffs to open headers have been around as long as people have made hot rods. Its not new. New for MINI, but not a new concept

 

Okeeton


Cat backs are legal in Cali as long as they are quiet enough. Law even states that if a Cali dealer/installer puts one on your car and you get "caught" for it they have to return it back to stock on THEIR dime. As long as your not changing the header your O.K.. and as long as they test it for sound with the switch closed you should be O.K.

 

What is being looked at for those of us with Unichips is having the Unichip control the valve......certain conditions would make X changes.......if then, go to. This would be very cool because it could be custom done to taste.

 

Too bad Randy's not keeping the DTM exhaust tip design. I'm inspired to splice in a "cut-out" into my modified Borla now...as if I needed a LOUDER Mini

 

It's always nice to hear from you Obiwan.

I was at R Speed tonight and both Joe and Hector were raving about the exhaust from the sound/design and construction.......

I don't know what a "DTM" exhaust tip is........could you enlighten me?

 

It's an upturned tip similar to the one he showed in his first prototype. Works in conjunction with rear under body diffusers:smile:



I had one dual 3" DTM tips "fabbed up" for my Borla

 

those crappy Millitek's that everyone was using.

Why is it necessary to talk down on one thing in trying to elevate another. I'm sure Randy will eventually offer a fine product as Milltek has for some time.

It's like everybody's MINIS...they are all great...I just might not want what someone else has, that's all.

 

Like dis...

 

Now THAT would be unique and probably very COOL. A product of modern technology vice 1950s technology! In fact, I wonder why no one has thought of that before?

Great idea Randy.

Very NICE

 

Here's a list of what I'd like to see Unichip manage:

1-Butterfly exhaust cut-out valve, rpm dependent (as mentioned above).
2-H2O/Methanol injection, boost-rpm dependent.
3-Third map designed for Nitrous, triggered by Venom controller.

Hmmmm?

 

Chow ...... Josh mentioned it to me when he was in Atlanta about a month ago and Randy mentioned it last week. It can be done.... some decisions need to be made about how aggressive it is. I think I would like 2 modes one "auto" and one "manual".....while I'm dreaming I also like Charlize.

 

I know this might of been mentioned but since I am battling a bout of pnemonia I am not going to search for it........since the 05 has taller gearing would the WM exhaust actually be quieter in the 05 vs 02-04's?

Oh by the way forget what they say "what happens in Vegas, stays in Vegas" this crap followed me home

Time to take my codine laced cough syrup and get some sleep.

 

Rossii,

Wow, get well quick.......that is not to be fooled with......

I don't think the diff in gearing has been mentioned but a good point. I have said this a lot ....I know that Randywants it very "street" worthy ie quiet in line with others....... I was not able to get the SPL meter out today

 

Hey guys,
Thanks for all of your input (and even you Andy). To clarify some things here:

The tip selection is not finalized yet, but we are leaning towards something kind of like the Remus. For those of you who don’t know what that looks like, it would be 2, 3" straight tubes, curved over in on its self at the tips(to create a curved edge), and hole filled metal linings inside each tip. Really nice looking!

As for the ideal loudness, we are aiming for Milltek quiet when closed. Our next prototype (which is going on my car, and hopefully the last one) will use a more densely packed muffler in order to achieve the sound we want.

Also, I have been working on a super secret list of who is interested, and if you want to shoot me a PM with your #, we will be sure to give you a call when they are ready.

-Brian

P.S. - If you think you want more than a cool engine mod, go on over to the suspension forum and check out our swaybar! Sorry, I had to...

 

I'm not sure why some want the UNIChip to control the valve...

That would be desirable for performance reasons, but Randy has shared that peformance is the best wide open, not partially, or closed. If the car was most powerful off-the-line with the valve somewhat closed, and had the most top-end completely open, then automated control would be very desirable. The valve then exists as a means of sound control, at the expense of performance, which is fine. The UNIChip is tuned to max performance, and that entails the the valve being open, or no valve at all. If the UNIChip were in charge, a valve wouldn't be necessary . Sound is something that I would want to control, as mentioned above/earlier (rehostat).

 

brian - tell randy to go for the slash cut tips instead..

Dude - miltek isnt crappy, still a bloody superb exhaust IMO, just not as loud as id like.

 

Like this?

 

oooh I like those.

 

i'd go for it if i didn't allready have a MILLTEK!!
i looked for dual exit pipes/tip's in that design but did not find them within reach...
**DTM is the way to go w/these bad *** rides! IMO

i like that l00k the raw cuts of the 'DTM' design

 

=0)
lake pipes/show pipes!? is this what ur referin' to?
into 'old' rod's HUH?
got pulled over tonight & the copper didnt notice the exhaust rumble/idle..asked about it but no big deal, he let me GO clean!
so a quiet exhaust would be what u want...