Re: Supercharger, bmw-digest V9 #335

["S. Khemmanivanh" <somckit@xxxxxxxxxxxxxxxx>]

Hi,

The gain on the ERT stage 1 supercharger is 90 hp for a total
of 280hp on my 93 325i. The stage 2 system includes a BB Throttle
Body and Free Flow exhaust for at total of 300hp.

The reason the M coupe pulls harder than my car is because the torque
curves of the 2 cars are totally different. My car develops max torque
near 6500 RPM while the M Coupe ( and other Mers) hit max torque at 3800
RPM.  This results in a very torquey, powerful feeling car.

My car pulls strong from 3500 to 6500 RPM, but it doesn't feel as strong
as the M Coupe.

I went with a SC because:

1. I could take it out later and put it in another car ( which
   will probably be pretty soon here)

2. All other mods would not get me the great torque that I desired. I
   considered a new diff. but didn't want to have my engine revving so
   high on the freeways.

Call Mike at ERT for all the details. 



Somckit Khemmanivanh


PS You may want to turbo your car for about the same price.


> 
> Date: Thu, 15 Oct 1998 11:10:26 -0700 (PDT)
> From: perra@domain.elided (Per Soderlind)
> Subject: Re: bmw-digest V9 #330
> 
> > Date: Wed, 14 Oct 1998 22:51:36 -0700 (PDT)
> > From: "S. Khemmanivanh" <somckit@domain.elided>
> > Subject: Re: Supercharging
> > 
> > Hi,
> > 
> > I've logged close to 3K miles on my ERT supercharged 325i. I encouraged
> > Thao to contact Mike at ERT, at 1-800-633-6007.  I performed the
> > installation myself, and I am not a mechanical expert, all you need is
> > time and patience.
> > 
> > Also I drove the M Coupe at the dealearship today. Great car!! I have
> > never driven an M3, but the M Coupe outclasses my supercharged 325i in
> > every performance and handling category.
> 
> What is the hp gain from installing the ERT supercharger ? I though that
> it would be at least 75 hp, which for a 325i should result in a total
> of about 265. Wouldn't that be enough to out perform a 240 hp M coupe ?
> I know that the M coupe is lighter, but...
> 
> How much does the ERT upercharger cost ? What hp gain and tourqe gain
> is expected when installed in a 325is ? Will this combination produce
> a faster car than the M3 ?
> 
> I'm thinking about this mod.
> 
> Thanks,
> Per
> 

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