getting 670 horsepower from a supercharger on a motor like this seems next to impossible, while retaining reliability measures. I would love to see a dyno graph of this with a picture of the supercharger on the motor. Thats a 68% increase in horsepower. This is almost unheard of by a supercharger on a fuel injected motor. I have also hear a couple of horro stories about whipple superchargers. This applies only if the parent company of the supercharger for the M5 makes the whipple product. I have heard that the supercharger blows up on the motor. A call to Whipple replies, a new one will be sent out and don't worry out your motor. Acouple days later the motor detonates because the pieces from the old supercharger are in the motor. This is only what i have heard and i do not know if this is true.
Beware about supercharging your $20,000 motor and their HP claims. I had a Dinan SC using the Powerdyne setup. They claimed 354HP. I measured 320 to 330 on the dyno. It did make the car faster, but I had a lot of problems with the Powerdyne unit (a real piece of ****. (The vortech is much better). I also had problems with check engine lights since the car is OBDII. Admittedly the car was a blast at the track and I gave C5 vettes hell, but my car was no longer as reliable. 6 PSI of boost with a 11.0:1 compression ratio is pushing it and would probably require an intercooler. I sure in the hell would not want to put in a special head gasket in order to use 9 PSI. If you are really serious about, you should replace the pistons with lower compression pistons and do it right. This is what Callaway does with the C5 and twin turbochargers. Turbocharging is about 30% more efficient than supercharging.
The other problem with all of these radical mods, unless they are done by someone like Alpina, is that they seriously devalue the car. If money and reliability are not concerns, then it can be a fun experience and at least worth bragging rights.
I guess the bottom line question is...... Is this SUPERCHARGER legitimate (are the HP claims accurate)....and CAN it be bolted on easily enough by OUR local BMW dealers.......I assume its not going to blow the motor or else a company with a reputation to tarnish wouldnt take a chance. HAS anyone out there USED THIS company before (even with other model BMWs)?
hehe... you think your local BMW would bolt it on for you at all? I don't know about in the US, but in Hong Kong, the dealer here will NEVER let your car go into service check with them again if you do something so radical to your engine. But I'm still curious to know if ANYONE has ever used any of their products before and can give some feedback on their quality, etc...
oh.. just got a new email from ESS:
"If you go for the VX system, it is designed as a new cast aluminum instake manifold with integrated liquid to air intercooler and fixed displacement Lysholm type twin screw supercharger. Once system is installed it will be covered under your M-Power top engine cover and is practically invisible. The system is designed with modes boost and with the engine longevity as our top priority."
I have no idea what's a Lysholm type twin screw supercharger.. Anyone care to explain?
Thanks. =)
I am skeptical about a claim of 670hp for the new M5 motor and here's why. For an average efficiency supercharger kit, each lb of boost equates to approximately 15hp. If you put liquid to air intercoolers which are very efficient, you should be able to run higher boost without detonation. However at 6lbs of boost, this would only equate to a 90hp increase. Where does the other 180hp come from? With 670hp on stock internals, this engine would grenade in about two crank strokes. A whipple or lysholm "screw" type supercharger squeezes air between two large, what look like drill bits to compress the air into the intake manifold. The upside of this setup is that boost is available immediately from down low and tapers off on the top end, vs. centrifugal superchargers like the Powerdyne, Vortech, or Paxton units which have very little boost down low and build progressively to make peak hp at the top end. The downside is increased heat, therefore efficient intercooler necessary whereas centrifugal superchargers don't always need an intercooler, because there is less heat created and the boost is more linear.
If somebody out there has cash to dump into their M5 and they want 600-700hp, go to Motorsport Designs in Texas (I think), they created a reliable street driven C36 Mercedes with 570hp (twin-turbocharged), also created a 700+hp Porsche C4S with twin turbochargers. They use the latest technology and stand behind their work from what I have heard. Expect to pay in the neighboorhood of $35,000-45,000USD.
yeah, I talked to G-Power as well, and they said that their engine modifications are for Germany only?!? They said that the modifications are not suitable for a temperate country such as Hong Kong, and refused to sell me any of their engine mods...
Quote:
Originally posted by Holger: I contacted most of the European tuners like AC Schnitzer, Hartge, Hammann, G-Power, Kelleners, etc. The only one I found which is still willing to do this is G-Power. They'll change a lot on the original engine and the price will be approx. 30.000-35.000 USD for it. This will give you 500hp with a torque of 700nm.
I contacted most of the European tuners like AC Schnitzer, Hartge, Hammann, G-Power, Kelleners, etc. The only one I found which is still willing to do this is G-Power. They'll change a lot on the original engine and the price will be approx. 30.000-35.000 USD for it. This will give you 500hp with a torque of 700nm.
Quote:
Originally posted by tfung: ESS did say that with other cars, they need to change the head gasket to a custom made one to lower the compression ratio. I'm suprised that other tuners are not developing superchargers for the M5 anymore. I thought Dinan was still working on one and G-Power is coming out with a program for a kompressor kit.
Holger, which tuners did you contact? I just want to know so that I can save some time to avoid contacting the ones that aren't making a kit anymore.
Thanks!
Terence
It seems that for $6K plus installation (bolt on kit.......can get done at your local dealer).........you can get 670hp out of the ESS SUpercharger....?
Linear Mode
