Supercharging the wife's car

Apex

Diamond Member
Oct 11, 1999
6,511
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www.gotapex.com
Wife's BMW E60 M5 is finally getting substantial work done to it. As of last week, it had the stage 1 supercharger from ESS put in. It still has some preproduction parts, mainly related to the intake side of the kit.

vt1_01.jpg


vt1_02.jpg


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It's back in to the shop to get the stage 2 done, which will add a water to air chargecooler, and increase the boost level. Preproduction parts should be swapped out for production.

Should be fun. The supercharger doesn't whistle much at all, and the bypass valve is plumbed back into the intake. :)
 

A5

Diamond Member
Jun 9, 2000
4,902
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What kind of power are we talking here? I don't know anything about the BMW aftermarket.
 

Apex

Diamond Member
Oct 11, 1999
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www.gotapex.com
What kind of power are we talking here? I don't know anything about the BMW aftermarket.

Not too sure, will have to dyno when it gets back.

It dyno'd about 60-70hp crank (about 55 rwhp) above stock with 91 octane before it was supercharged, thanks to headers, full exhaust, intake, pulley, oil cooler, and software. Before the supercharger, a Dinan 5.8L stroker equipped M5 will walk it, but at a relatively slow delta.

At the Streets of Willow racetrack (relatively tight, technical track), counterclockwise, it got up to about 130mph on the straight with me driving.

After all said and done, it should be over 700 at the crank. It's a pretty conservative kit at just 6 psi. It's designed for reliability and usability, with a torque curve that mirrors the stock one. OE compression ratio is 12.0:1, so going much over 6psi this isn't all that worthwhile on 91 octane.

Hah sounds a bit excessive, 500hp not enough?

What is this "enough" you speak of? :)
 

helpme

Diamond Member
Feb 6, 2000
3,090
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Not too sure, will have to dyno when it gets back.

It dyno'd about 60-70hp crank (about 55 rwhp) above stock with 91 octane before it was supercharged, thanks to headers, full exhaust, intake, pulley, oil cooler, and software. Before the supercharger, a Dinan 5.8L stroker equipped M5 will walk it, but at a relatively slow delta.

At the Streets of Willow racetrack (relatively tight, technical track), counterclockwise, it got up to about 130mph on the straight with me driving.

After all said and done, it should be over 700 at the crank. It's a pretty conservative kit at just 6 psi. It's designed for reliability and usability, with a torque curve that mirrors the stock one. OE compression ratio is 12.0:1, so going much over 6psi this isn't all that worthwhile on 91 octane.



What is this "enough" you speak of? :)

Wow, 130 mph at streets. That thing would be downright scary on the big track... 700 hp and 2 tons of German auto screaming down that 1/2 mile straight.
 

ayabe

Diamond Member
Aug 10, 2005
7,449
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Dare I ask the final tally?

I'm going to posit a first guess of......$16,000....
 

sdifox

No Lifer
Sep 30, 2005
97,393
16,422
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I know this is garage, but where is pic of wife?

Also, damn, that car is drool worthy.
 

Aharami

Lifer
Aug 31, 2001
21,205
165
106
much props to your wife for being able to handle that kind of power. If I gave my wife a car that powerful she'd probably crash and total it while trying to back it out of the driveway!