e60 550i supercharged

[kernelmaker]

bump to see more info and pics on this supercharged 550

I don't have any photos yet, but here is a video from the other day:

[ame]http://www.youtube.com/watch?v=0PLFHhhx3-M[/ame]

Oh wait, nevermind. Forgot there are some photos on photobucket. Here are some random photos taken over the past few years:

http://s1229.photobucket.com/albums/ee466/twintiptao/

Cheers.

[OnUrleft]

this thread is awesome

4.8iS watching here..

[pbonsalb]

I don't have any photos yet, but here is a video from the other day:

The screen shot of the dyno was missing. What are the results?

[JeffroGymnast]

Love the pictures!

[BadBoostedBmwM3]

Nice to find the resolution!

I didn't even think about the restrictive exhaust. Even still, I didn't think it would lose that much pressure at 7psi.

[JeffroGymnast]

Question... Even with the lower boost numbers, are you making the same power as the kit is supposed to make? Or are you going to need the smaller pulley to make the same power/torque? I would think SS catless headers would give massive power gains with the supercharger

[BadBoostedBmwM3]

Question... Even with the lower boost numbers, are you making the same power as the kit is supposed to make? Or are you going to need the smaller pulley to make the same power/torque? I would think SS catless headers would give massive power gains with the supercharger

Great question!
He should making more power without the restriction.

[JeffroGymnast]

Does the tune touch valve timing at all? maybe some of the boost is going out through valve overlap... this would make sense with the high-flowing exhaust

[n0te1oner]

Maybe a stupid question, but where are you tapping for the boost reading? The ts2 unit itself?

[kernelmaker]

The screen shot of the dyno was missing. What are the results?

Question... Even with the lower boost numbers, are you making the same power as the kit is supposed to make? Or are you going to need the smaller pulley to make the same power/torque? I would think SS catless headers would give massive power gains with the supercharger

Sort of. Making an additional 96 whp. The kit does +100 whp on a factory configured N62B48. The interesting thing is that we made the +96 whp on only ~4PSI, which is not near the rated 6.5-7PSI that the kit was intended to deliver. You'd have thought that the headers would give massive power gains, right? Ends up they reduced manifold pressure. Plan on solving that with these:



Not sure what sort of boost we'll end up with by reducing the size, so ended up getting a couple pulleys so we could do some experimenting.

Great question!
He should making more power without the restriction.

Yeah, you'd have thought.

Does the tune touch valve timing at all? maybe some of the boost is going out through valve overlap... this would make sense with the high-flowing exhaust

Perhaps, but can't say for sure. ESS did the tuning on this car. They keep their secrets in-house..

Maybe a stupid question, but where are you tapping for the boost reading? The ts2 unit itself?

The magnuson supercharger has a nipple on the manifold. It is directly after the blower, before air gets pushed into the cylinder heads. We ran two different boost guages. Both had similar results.

[GG///M3]

Can't wait to see it at 7psi. Thats a nice table top torque curve. Now if they would make a kit like this for the e39 m5.

[pbonsalb]

That is great power -- a nice 1/3 bump over stock and should make the 550i a lot of fun.

[Bwaterman]

Nice Car, I bet that's fun to cruise around in.

That's an Eaton TVS not a twin screw btw (most people wouldn't notice the difference but we supercharger nerds are picky)

[JeffroGymnast]

That torque curve is SEXY. Can't wait for results with the new pullies

[RVAE34]

Nice! Can you post the dyno with RPM's instead of wheel speed?

[kernelmaker]

Nice! Can you post the dyno with RPM's instead of wheel speed?

Here ya go:

[RVAE34]

Thanks. That thing is going to be a blast when you get the boost up a bit. Just watched the video at home and it sounds wicked.

[BigM62]

Hm I would expect a TS unit to produce boost much sooner than that. because the boost wanders a bit I suspect the belt may be slipping some.

You suspect anything that is S/C related. And FTW, your rolls are freshman.

[OnUrleft]

Any updates with the smaller pulley?

[kernelmaker]

Any updates with the smaller pulley?

My girlfriend and I tossed the pulley in this past weekend. Took us about 30 minutes as it was our first time ever replacing a supercharger pulley. The pulley we took off was a 3.2" pulley. The pulley we replaced it with is a 3.0" pulley. We even installed a 3/8" shorter drive belt. The tensioner was pretty darn tight with the new/shorter belt. Car fired up just fine with the shorter belt and new pulley, and you could even hear a little whine from the supercharger that wasn't as distinguished with the 3.2" pulley.

At first I was a little careful driving the car around not knowing how much boost was being pushed into the factory bottom end. Managed to borrow a boost guage and popped it on to the manifold for a quick couple tests. The boost guage jumped up to around 7PSI at full throttle. That's about a 3PSI gain.

The car is a pleasure to drive. The car pulls so much harder now. It basically feels like the supercharger got supercharged...it's crazy. I'm still trying to wrap my senses around it.

Doing research on water/meth kits now. Does anybody have a kit they are in love with? What kits should I be looking and and what kits should I avoid? Thanks in advance guys.

[BadBoostedBmwM3]

My girlfriend and I tossed the pulley in this past weekend. Took us about 30 minutes as it was our first time ever replacing a supercharger pulley. The pulley we took off was a 3.2" pulley. The pulley we replaced it with is a 3.0" pulley. We even installed a 3/8" shorter drive belt. The tensioner was pretty darn tight with the new/shorter belt. Car fired up just fine with the shorter belt and new pulley, and you could even hear a little whine from the supercharger that wasn't as distinguished with the 3.2" pulley.

At first I was a little careful driving the car around not knowing how much boost was being pushed into the factory bottom end. Managed to borrow a boost guage and popped it on to the manifold for a quick couple tests. The boost guage jumped up to around 7PSI at full throttle. That's about a 3PSI gain.

The car is a pleasure to drive. The car pulls so much harder now. It basically feels like the supercharger got supercharged...it's crazy. I'm still trying to wrap my senses around it.

Doing research on water/meth kits now. Does anybody have a kit they are in love with? What kits should I be looking and and what kits should I avoid? Thanks in advance guys.

Please re-dyno!!

Especially since it's good idea to make sure the car is not running lean with the extra air and better (free) flowing exhaust.
BTW, do you have a wideband.
I don't really think it is good to run "blind" on any FI setup. You are basically playing with fire not having a wideband. Crap happens. You don't really need aboost gauge, but they are fun to watch. Well, a boost gauge can tell if you have a vac/boost leak, so I like them.

If you install a W/M kit, you should be able to bump up the boost. Either way, ESS kits typically see good gains with a W/M kit because the factory DME adjusts for the cooler/denser air (adds more timing).

[kernelmaker]

Please re-dyno!!

Especially since it's good idea to make sure the car is not running lean with the extra air and better (free) flowing exhaust.
BTW, do you have a wideband.
I don't really think it is good to run "blind" on any FI setup. You are basically playing with fire not having a wideband. Crap happens. You don't really need aboost gauge, but they are fun to watch. Well, a boost gauge can tell if you have a vac/boost leak, so I like them.

If you install a W/M kit, you should be able to bump up the boost. Either way, ESS kits typically see good gains with a W/M kit because the factory DME adjusts for the cooler/denser air (adds more timing).

Crap, you're right. To top it off, I red-lined the car 6 or 7 times over the period of the 100 miles that the shorter pulley has been on the car.

Just sent my shop an email. Hopefully they can get me on the dyno tomorrow. What do you think the chances are that I leaned the car out with the shorter pulley?...

ESS claims that the kit is safe with the 3.0" pulley that I just got done installing. They also advertise the kit as a 7PSI kit. The only thing they do not state is compatibility with the supersprint headers or full exhaust.

[hybridbmw]

Looks good! I bet the car feels great at 7psi!

Did you hear any detonation while it was going to redline? I highly doubt you damaged anything if the car is still driving fine. I would recommend bringing it to the dyno and hooking a wideband up to it to see where your AFR's are.

[BadBoostedBmwM3]

Crap, you're right. To top it off, I red-lined the car 6 or 7 times over the period of the 100 miles that the shorter pulley has been on the car.

Just sent my shop an email. Hopefully they can get me on the dyno tomorrow. What do you think the chances are that I leaned the car out with the shorter pulley?...

ESS claims that the kit is safe with the 3.0" pulley that I just got done installing. They also advertise the kit as a 7PSI kit. The only thing they do not state is compatibility with the supersprint headers or full exhaust.

ESS knows their stuff!!!

However, undoubtedly the car will run leaner with your exhaust setup. Hence, you were at ~400whp, the advertised power of the kit, with only ~4psi.

[kernelmaker]

Hi guys. Here is the dyno from earlier today. The ~400HP run is with the 3.2" pulley and the ~420HP run is with the 3.0" pulley.



The electronic boost gauge hooked into the dyno wasn't accurate. We put another analog boost gauge on the manifold with a T-adapter and it read 6PSI...1.5 PSI higher than where we were with the 3.2" pulley.

Anyways, I was surprised to see the HP numbers as "low" as they were since the car drives so much different with the smaller pulley. The torque line is up quite a bit though.

Overall, it's comforting to know the system isn't running lean.