More HP out of Active Autowerke supercharger

Excidium28 · #1 (**permalink**) 01-17-2005, 12:50 AM

Can I crank out more hp out of 99 M3 AA SC ... I know RMS stage 2 you can do the aftercooler upgrade, would i be able to do somethin like that on active autowerke? What would help the most .... pully's

#2 (**permalink**) 01-17-2005, 03:59 PM

Quote:

Originally Posted by Excidium28

Can I crank out more hp out of 99 M3 AA SC ... I know RMS stage 2 you can do the aftercooler upgrade, would i be able to do somethin like that on active autowerke? What would help the most .... pully's

The AA S/c already comes with an intercooler and an oil cooler. The Rotrex is what it is, no upgrades.

Unless the bigger Rotrex shows up.

BUT you can do the ...
*OBD1 manifold upgrade worth 10-20 RWHP and a hell of a pull up top.
*You can do UDP's as suggested ~10 RWHP
*You can do exhaust, headers(but only with cat delete) or do not waste
your money, and nice rear exhaust.
*You can do some 3.38, 3.46 or 3.64 gears for some nice zip.
*You can do a lightweight flywheel for a quicker spool also.
*You could add water injection to further cool your IAT's.
*You could remove some weight from the car

That could be a good start

DakarDave · #3 (**permalink**) 01-17-2005, 04:40 PM

Quote:

Originally Posted by Excidium28

Can I crank out more hp out of 99 M3 AA SC ... I know RMS stage 2 you can do the aftercooler upgrade, would i be able to do somethin like that on active autowerke? What would help the most .... pully's

You're pretty much maxed out in terms of boost... but you can get a larger FMIC.. I know George installed a AA Stage II turbo FMIC onto a AA SC setup.. with some good seat of the pants results... might be something you want to look into...

As for marco's recommendations about gearing.. do it.. Shorter gearing with a supercharger is a good thing... the only thing you'll have to worry about is increased highway noise.. but for me it's a good compromise!

-Dave

RRevolution · #4 (**permalink**) 01-17-2005, 07:57 PM

Quote:

Originally Posted by DakarDave

You're pretty much maxed out in terms of boost... but you can get a larger FMIC.. I know George installed a AA Stage II turbo FMIC onto a AA SC setup.. with some good seat of the pants results... might be something you want to look into...

As for marco's recommendations about gearing.. do it.. Shorter gearing with a supercharger is a good thing... the only thing you'll have to worry about is increased highway noise.. but for me it's a good compromise!

-Dave

At what RPM's are you experiencing the most noise, I'm sure it is mostly higher end, but just curious as to what your output on the vehicle is.

If you're looking for an AA S/C let me know.

GOTUBCH · #5 (**permalink**) 01-17-2005, 08:06 PM

I have a AA supercharger and I am gonna go ahead and spin it up faster. I am thinking like 10-11 pounds, and installing Nitrous just have to get around to it. Currently my clutch will not hold the power so not in a real big rush but it is in the mix. Just to let you know.

#6 (**permalink**) 01-18-2005, 05:30 AM

Quote:

Originally Posted by GOTUBCH

I have a AA supercharger and I am gonna go ahead and spin it up faster. I am thinking like 10-11 pounds, and installing Nitrous just have to get around to it. Currently my clutch will not hold the power so not in a real big rush but it is in the mix. Just to let you know.

Goddamn, that is sweet!! Is that your lady?

bimmerdriver99 · #7 (**permalink**) 01-18-2005, 01:55 PM

What about schrick cams? I am looking at the aa supercharger and i have schrick cams on my 99 m3 along with the m50 intake manifold underdrive pullies and going to a LTW flywheel. Also some lighter interior and gutted truck. Also i have an exhaust. Im curious to see the numbers i will me looking at with maybe some custom tunning.

GOTUBCH · #8 (**permalink**) 01-19-2005, 12:57 PM

I am told you can not run underdrive pulleys and a LTW flywheel just something to think about before diving in to both of those mods. I am getting the clutch from Bimmerworld that weighs 12 pounds total flywheel and clutch twin disk. As opposed to the 52 pounds of the factory pieces. My current clutch will not hold so I am in no big rush to get everything else done. But it is coming soon. Not my chick that would be nice just some chick at a show I did.

bimmerdriver99 · #9 (**permalink**) 01-19-2005, 05:44 PM

Quote:

Originally Posted by GOTUBCH

I am told you can not run underdrive pulleys and a LTW flywheel just something to think about before diving in to both of those mods. I am getting the clutch from Bimmerworld that weighs 12 pounds total flywheel and clutch twin disk. As opposed to the 52 pounds of the factory pieces. My current clutch will not hold so I am in no big rush to get everything else done. But it is coming soon. Not my chick that would be nice just some chick at a show I did.

Im pretty sure you can run the ltw flywheel and the underdrive pullies, but you cant use a ltw flywheel with a crank pully. The underdrive pullies that i have are the power steering, alternator, and watter pump. somebody correct me if im wrong.

///BimmerPower · #10 (**permalink**) 01-19-2005, 08:04 PM

Quote:

Originally Posted by bimmerdriver99

Im pretty sure you can run the ltw flywheel and the underdrive pullies, but you cant use a ltw flywheel with a crank pully. The underdrive pullies that i have are the power steering, alternator, and watter pump. somebody correct me if im wrong.

You are correct. It is NOT recommended to run a LTW flywheel and underdrive crank pulley since it alters the harmonic balance of the crankshaft, and could lead to catastrophic failure. You can however, run an LTW flywheel in conjunction with accessory pulleys

///BP

CarlsbadCroak · #11 (**permalink**) 01-19-2005, 10:01 PM

Running that Rotrex at 11 PSI will probably be a bad idea. First off, it's WAY over the max impeller speed the Rotrex is rated for, which will cause it to fail, maybe not right away, but it won't last long.

And then there's an efficiency issue, at impeller speeds so much higher than what the blades were designed to run at, the adiabatic ratings will be crap, you're going to be making a LOT of hot air, so much in fact that you're getting almost no real gains with 3 more PSI. Keep in mind that the AA FMIC is just barely big enough to handle 8 PSI (some claim it's not even big enough for 8 PSI). You can water inject to help a bit with this, and you can always use a bigger FMIC, but that's a lot of effort just to get you back to what you had at 8 PSI, with a blower that's going to melt down really quickly.

GOTUBCH · #12 (**permalink**) 01-20-2005, 06:50 PM

They blower will only see those speeds for maybe 2 seconds per shift? If that long. So what are you saying keep the blower and 8 psi and and just run my nitrous to like a 75 shot? and maybe a FMIC sprayer?

Excidium28 · #13 (**permalink**) 01-23-2005, 02:37 PM

Would you need to do any more engine mods in order to handle 50 shot wet nos? on top of the AA supercharger?

GOTUBCH · #14 (**permalink**) 01-23-2005, 09:08 PM

I have no idea and neither does anybody else so I guess I am gonna have to find out and keep my fingers crossed

lowviscosity · #15 (**permalink**) 01-26-2005, 05:15 PM

the girl in your sig man....

sorry didn't mean to jack the thread but dayum! makes me want a 1999 M3..if it comes with thta bootay