It's not so much superchargers, per se. The problem is putting one on a highly managed engine, as in BMW, that is not designed for a supercharger. I am not saying it can't be done. But, I'd need to see a number of them work properly before I started to become convinced. And, I would think that the cost would be prohibitive to do the job right--as Alpina does. Finally, the warranty issues could be nightmares--even if the company providing the supercharger is Dinan.

 

nice clip that sounds really nice

 

Anyone have a sound/video clip of the superspring exhaust on a 545. I know that RodyBMW has posted video clips for the Eisenmann and B&B exhaust, but I wanted to hear a supersprint exhaust before i purchase mine.

 

kC_GiRL,
If you want to hear what the B&B sounds like in person you should attend the Socal Meet & Greet in Huntington Beach 1/6/07. Brian1225 will be there with his 550i and B&B. Iceman316 will also be there with his 550i and M5 exhaust. The audio clips you hear online really doesn't do any of the exhausts justice.

 

Mine do if you listen through a good sound system. I should have played them for you on my new Gateway when you were here.

 

ZNOD,
Since you are the mathematician and scientist here how about this idea for the V8s assuming you have some kinf of diffusser to hold the dual exhaust.... get a local shop to cut the exhaust and fabricate simple tubing all they way to the back for each 4 cylinders and attached a thin muffler similar to the RD sports to fit in the space.. i think a regular exhaust (non stainless steel) will last a good 5 years which is longer that I have anticipated having my car anyways, and will provide the sound, performance and looks for a fraction of the cost? someone in belgium did it and have been itching me here My only 2 concerns is performance dregradation or agregation AND sound... what is your opinion? yeior nai?
here is a pic of what im trying to accomplish

and its similar to this

 

I hope I don't disappoint, but I think the car would be slower and way to loud for me. And, I can't imagine that such a set up would not produce a huge amount of resonance. Finally, I have no idea how the emission warning system, etc., would react to such a set up, but I'd bet the reaction would not be good. Note that I can't exactly tell what would be in place emission wise.

 

ask daytrader0, seems like that's what he did -
http://forums.e60.net/index.php?s=&sho...st&p=362963

 

I think the main problem is due to the increased wheel size on most modded cars. I was reading in European Car that it could take about 20 additional hp to offset the increased rolling resistance of a bigger tire and wheel combo to get it back closer to normal performance levels. I think this issue is well known but not very obvious when we talk about performance. I did a few runs with Vegastrashed and except for one attempt, he jumped on me on all the runs and I was only able to stay next to him at about a half car to full car length back. My car didn't gain as I had thought it would considering my Dinan mods. I'm not using this as an excuse but it's really making me think about going back to 19s and seeing that post for the 19 inch R10s in the Classifieds isn't helping either... :'(

Anyway, I definitely agree that for a "noticeable" gain in performance, only increased displacement or force induction will work. Otherwise, any minimal increase in hp from simple bolt-on mods like what I've done can easily be offset but drivers' skills or the alignment of the planets...

BTW, I do plan on getting the Dinan software. I think it'll tie my other upgrades together and improve driveability as well as performance (even if it's minimal or to only get me back to square one - stock performance). After that, I have to seriously consider force induction or......................get that damn M5! hahaha

 

Won't her car sound different cause it's an inline 6 instead of a V8?