I just sold my M5 and picked up this clean 2004 M3 Dinan S3 with 9900 miles.
The supercharger were installed at 8500 at Dinan headquarters in Morgan Hills, CA.

Dinan Supercharger System Features (from Dinan website):
- Vortech Gear-Driven Supercharger (4.6 psi Boost Pressure)
- CNC Aluminum and Steel Mounting Brackets
- High Flow Cold Air Intake
- Larger Capacity Fuel Injectors
- Automatic Belt Tensioner
- Racing-Style Aluminum Radiator (35% capacity increase)
- Comprehensive Engine Management System Calibration
- Matching New Car Warranty Coverage (up to 4 years/50,000 miles)

Peak Horsepower: 423 @ 7900 rpm
Peak Torque: 313 lb/ft @ 5500 rpm

Those are crank numbers.

I know Dinan is very conservative, but I guess it's for realibility and their matching 4yr/50K miles warranty is really a peace of mind.
It only boosts 4.6 psi but the redline is still 8000rpm.

Maybe I could add couple more HPs if I get headers ;)

Current mod list:
- Dinan Supercharger
- Dinan Free Flow Exhaust
- Dinan High Flow Throttle Bodies
- Dinan Stage 3 Suspension System (Koni)
- Dinan 3.91 Limited Slip Differential
- Black Kidney Grilles
- Black Side Grilles
- CSL style CF rear diffuser
- V1 Hardwired

BTW, don't worry about the orange reflectors, orange turn signals, car looks like 4x4, etc...
Anyone who knows me, these things will be taken care soon! :)

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_06.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_05.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_01.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_02.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_03.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_04.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_07.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_08.jpg

http://www.efiunlimited.com/gallery/data/500/M3_31Oct_09.jpg

SICK, dude!

Your car has just become my new background picture. That makes me want an e46 M3. Very good choice!:buttrock

Awesome! You're pictures continue to amaze me. What camera do you use?

ur car looks stunning..and its a quick little bastard as well

You sure as hell can take a mighty nice picture ;) Beautiful ///M

I use Canon 20D with 28-135mm IS USM lens.

BTW, here's a pic of the CSL style CF rear diffuser :)

http://www.efiunlimited.com/gallery/data/500/LA_29Oct2005_20.jpg

I aspire to own that car... it will be mine, oh yes, it will be mine.

Have you changed pully sizes to compensate for atmospheric differential? The last supercharged car I built at altitude had to run a 7psi pulley to get the equivalent of 4psi of sea-level boost. Downsizing the pulley also caused a bunch of fabrication difficulties- resulting in belt slip, which resulted in a custom serpentine/belt tensioner assembly. Not to mention, that the fuel/ignition mapping was all wonky due to the difference in air density- *that* little problem necessitated a piggyback air/fuel controller and a fair bit of dyno time to tune.
Seeing as you're probably the first supercharged M3 here in Colorado, I'd be surprised if Dinan has done much in the way of research about their superchargers at altitude.
Anyway, congrats. I was considering the Evosport kit, but can't justify $25K and round-trip shipping, especially as results obviously degrade significantly at altitude.
R.

Wow, that is beyond nice. Great pictures, love the blue sky, great contrast against the car.

Is that Steel Grey? BTW nice friggin car!

Have you changed pully sizes to compensate for atmospheric differential? The last supercharged car I built at altitude had to run a 7psi pulley to get the equivalent of 4psi of sea-level boost. Downsizing the pulley also caused a bunch of fabrication difficulties- resulting in belt slip, which resulted in a custom serpentine/belt tensioner assembly. Not to mention, that the fuel/ignition mapping was all wonky due to the difference in air density- *that* little problem necessitated a piggyback air/fuel controller and a fair bit of dyno time to tune.
Seeing as you're probably the first supercharged M3 here in Colorado, I'd be surprised if Dinan has done much in the way of research about their superchargers at altitude.
Anyway, congrats. I was considering the Evosport kit, but can't justify $25K and round-trip shipping, especially as results obviously degrade significantly at altitude.
R.
Not sure about changing the pulley sizes, but I can ask Dinan about that.

BTW the car runs strong and fine.
I drove around LA last Saturday about 100 miles and then straight to Denver (from Sat night - Sun morning) for a total of around 1000 miles, just stopping twice for gas and in LV about 30 mins, I got no problem at all, no hesitation anything at all. Average about 90 - 100 mph, couple times hit 125mph, and once hit 145mph.

And that's including driving thru snows between Glenwood Springs and Eisenhower tunnel on Sunday morning with temparature around 25 - 30 F.

Not sure about changing the pulley sizes, but I can ask Dinan about that.
You'll find that the car is putting out quite a bit less power here at altitude (duh); on a supercharged car, the easiest solution is to run a smaller pulley to compress *more* of the thin air, in order to return your performance to what you'd expect at sea level. The downside to this, is that the car can't be driven as sea level unless you change the pulley. There's a formula that you can use to figure it out the size pulley you'll need, but unfortunately, I don't remember what it is. The Dinan guys should be able to help. R.

I think everyone knows that you lose about 3% of HP for every increase in 1000ft. I believe this is for N/A cars. Forced Induction cars also lose some HP off course but I'm fine with that.

My M5 lose a lot of power in here, that's why it got headers, Powerchip, x-pipe, exhaust, diff, IATS, intake to make up for the loss power.
I tried to have the M5 felt like it was at sea level.

I'll get some dyno and see what Dinan can do.
BTW Dinan is currently working on Stage 2 with intercooler and that's good for 500hp.

You'll find that the car is putting out quite a bit less power here at altitude (duh); on a supercharged car, the easiest solution is to run a smaller pulley to compress *more* of the thin air, in order to return your performance to what you'd expect at sea level. The downside to this, is that the car can't be driven as sea level unless you change the pulley. There's a formula that you can use to figure it out the size pulley you'll need, but unfortunately, I don't remember what it is. The Dinan guys should be able to help. R.

Good advice.

I would suspect, due to the air density, that the car is running closer to 3 psi up here in altitude. A simple boost gauge reading should confirm this.

In theory, you should be able to install a pulley that will equate to the same *absolute* pressure you would see at sea level on the 'stock' pulley.

Otherwise, car looks good.

This is a good link with calculator too :)

http://www.csgnetwork.com/relhumhpcalc.html

I think everyone knows that you lose about 3% of HP for every increase in 1000ft. I believe this is for N/A cars. Forced Induction cars also lose some HP off course but I'm fine with that.

According to most dyno correction factors, you lose 20-25% up here.

Turbocharged cars can compenstate for altitutde due to the wastegate, but a s/c has a fixed system, due to the fact that it is driven by a belt. Changing to a smaller pulley would be the same as a wastegate staying open longer.

Either way, throw it on a dyno without any correction and see what she does...

Well, like I said, been there, done that. I had to run a much smaller pulley (the equivalent of 7 lbs at sea level) to get the air pressure density equivalent equal to 4 lbs at sea level (smaller pulley = higher compression of the air going into the supercharger). With the stock 4 lb pulley, the supercharger was just not compressing enough here in Denver- damn thin air. Since you spent all that coin on the upgrade, you might as well research into getting the appropriate bang for your buck- although Dinan will probably have to mill you a custom pulley. Just remember to reinstall the stock pulley if you ever take the car back down to sea level. The difference is surprising.

R.

so is that HP numbers you listed from factory spec or is that actuall dyno HP that you have done or have seen? just curious.

Nate, those are crank numbers from Dinan.

Here's scanned article from Bimmer Magazine (btw I don't have the wheels and the BBK) :

http://www.daftproductions.com/m3/dinan-s3_p1.jpg
http://www.daftproductions.com/m3/dinan-s3_p2.jpg
http://www.daftproductions.com/m3/dinan-s3_p3.jpg
http://www.daftproductions.com/m3/dinan-s3_p4.jpg
http://www.daftproductions.com/m3/dinan-s3_p5.jpg
http://www.daftproductions.com/m3/dinan-s3_p6.jpg

Nate, those are crank numbers from Dinan.
Here's scanned article from Bimmer Magazine (btw I don't have the wheels and the BBK) :
http://www.daftproductions.com/m3/dinan-s3_p1.jpg
http://www.daftproductions.com/m3/dinan-s3_p2.jpg
http://www.daftproductions.com/m3/dinan-s3_p3.jpg
http://www.daftproductions.com/m3/dinan-s3_p4.jpg
http://www.daftproductions.com/m3/dinan-s3_p5.jpg
http://www.daftproductions.com/m3/dinan-s3_p6.jpg
man those red x's are serious HP numbers! :D j/k

Man you go through cars like a fat kid goes through cupcakes. Didnt you just get the M5 last summer. Anyway congrats on the car, it looks sick and has to be fun to drive. Hope to see it soon.

:buttrock: cant wait to see it ronnie!
Second Creek this weekend?:evil2

that is sweet!!! congrats!

Is that Steel Grey? BTW nice friggin car!

No, it's Silver Gray :)

Ronnie, i suggest you start browsing and posting in the Forced Induction forum here, they seem to know quite a bit.

Get some deep lipped wheels on their pronto...powdercoated gray or black would be hotness!:buttrock

oh yeah thats nice :eek: damn... just looked at it again.... Wow!

Hey do you have any odd noises around 3-4,000 RPM? We just installed the same kit and we have this crazy noise from 3-4k only when the car is under load. The noise cannot be duplicated on the rack, only when the car is on the ground. Also, the noise was definately not present before the install.

Hey do you have any odd noises around 3-4,000 RPM? We just installed the same kit and we have this crazy noise from 3-4k only when the car is under load. The noise cannot be duplicated on the rack, only when the car is on the ground. Also, the noise was definately not present before the install.
No, I don't have that kind of noise....

You went from an M5 to a S3 M3? I'm freakin' jelous. Nice buy man, I hope to see you cruisin' around....look for me, I'd like to take a closer look if I were to run into you....and we can, you know, treat a few street lights, I bet I can give you a run for your money in my stock E36....hahahaha! :D :nono

Vic