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Supercharged the E60 M5

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Apex said:
The only weight reduction comes from the exhaust (about 65 lbs lighter than stock) and headers (about another 10 lbs).

On the flip side, the supercharger, cooling system, etc probably added at least 30-40 lbs back in.

She also has a shotgun safe in the trunk, so that adds another 3-4 lbs (not including shotgun, of course).
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wow. shotgun + mid-11's 1/4 mile bmw, ur wife seems like an absolute badass. awesome.
 
Zenmervolt said:
There's also a big difference in how a kit is designed. There's no reason why a 2.4 litre engine shouldn't be able to push 260 hp reliably if the setup is done right. Of course, doing it "right" involves things like new pistons and forged internals and lowered compression ratios and whatnot. And you're going to be pushing somewhere between 14 and 16 PSI to get there. That's a LOT, especially for the stock 9.6:1 or 9.8:1 compression ratio.

If you're just slapping a turbo on and not cracking the block to do a major retrofit on the internals, then yes, you're going to have problems trying to get 260+ hp out of the stock tC engine. If you're willing to open it up and start getting into proper internals, however, you'd be fine. Hell, the 2.3 litre engine in my Volvo manages about 240 hp on 10 PSI stock, but it's also running only an 8.5:1 compression ratio (and, again, there are forged bits on the inside and the cylinder walls are reinforced).

The "official" TRD supercharger kit for the Scion tC ran 6 PSI for 200 hp total. Not much different than the 6.5 PSI that Apex is safely running here. Percentage wise you're getting about the same gain, it's just that 25% of 160 hp is only 40 hp, while 25% of 500 hp is just a bit more than 40 hp. 😉

Turbos get painted as "unreliable" because people seem to think they're magic. Just because you can get 125 hp from a low-pressure turbo on an M5 with perfect safety doesn't mean that you can gain that same amount on a 150 hp econobox. The reason that a 260+ hp tC will be thrashed in 50,000 miles is because you're trying to get more than a 60% power increase. That same level of increase for an M5 would be trying to get a 700 hp M5; of course at that level you're going to have issues.

Bottom line: If you do it right and don't get crazy, you're fine. The problem comes when people try to get too much without the proper supporting modifications.

ZV
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good point about 60%.
steel sleeves and forged pistons and such were going to cost way more than just the cost of the turbo, feh
Toyota got much higher than expected engine failure rates on that 200hp TRD supercharger and discontinued it.
 
I really debated hard between the M5 and M3. Gas mileage and no so much a need for 4 doors won.

What kind of MPG are you getting? I am still sort of curious.

I drive insane mileage (lately over 1000 miles a week), but love performance and use it. However, I am a bit of a realist and don't want to be creating carbon planet destroyer and/or taking away from money that I could donate rather than burn.

I was seeing the drivers were barely out of double digit MPG in normal use.

That said, if I was a 1%er; yes I probably wouldn't care about MPG...but I am not yet and understand what one can afford and one can pay.
 
Real world M5 MPG, even before modification, is much lower than that quoted by BMW, but if you're shopping for one this isn't on your list of problems.
 
Real world is about 14/19 or so on an M5. If you're going constant speed on the freeway, you can hit mid 20's.

For my wife, we're living in pretty much the worst case senario. We live atop a very long, steep hill, which kills the gas economy. She also takes very short trips, pretty much just up and down. Plus, she has a lead foot... like seriously lead foot.

When we're lucky, she can get maybe 12 mpg. Hammering it, it goes down to about 9. On the track, it'll dip below 6. At Streets of Willow, I think I had to fill up the tank at 70 miles or so.

The supercharger has improved the gas economy a notch or two, real world. I think at very low throttle, it runs slightly leaner.
 
Safeway said:
So what's the combination-locked shotgun rack for other than, obviously, a shotgun?

Aren't you a tad scared to open your trunk in public? Load groceries or retail bags? Risk of theft?

I conceal carry everywhere I go, but leaving a registered shotgun in your trunk 24/7 carries additional legal risks.
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Maybe OT but I too have to wonder what's up with the shotgun? Not exactly idea for personal protection.
 
Apex said:
Real world is about 14/19 or so on an M5. If you're going constant speed on the freeway, you can hit mid 20's.

For my wife, we're living in pretty much the worst case senario. We live atop a very long, steep hill, which kills the gas economy. She also takes very short trips, pretty much just up and down. Plus, she has a lead foot... like seriously lead foot.

When we're lucky, she can get maybe 12 mpg. Hammering it, it goes down to about 9. On the track, it'll dip below 6. At Streets of Willow, I think I had to fill up the tank at 70 miles or so.

The supercharger has improved the gas economy a notch or two, real world. I think at very low throttle, it runs slightly leaner.
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you and your wife must be a blast 😀😀😀
 
So the time has come, flying out to Munich in less than 24 hours.

Pictures of the F10 M5 coming soon. 🙂
 
Congrats OP, nice set up.

Personally I'm not a big fan of that car (design wise), it remind me of:

mimi_drew-carey-show.jpeg


:biggrin:

Subyman said:
How does the SMG like the extra power? I've heard that those trannys can be finnicky at stock levels and like to eat clutches during city driving. I'd hope it would be okay to handle the extra 150-200hp.

Was the bottom end touched? I know that engine has high compression stock.
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BMW doesn't really leave much room for improvements/upgrades.

Chances are, it's a matter of time before his wallet hates him.

:biggrin:
 
Vdubchaos said:
Congrats OP, nice set up.

Personally I'm not a big fan of that car (design wise), it remind me of:

mimi_drew-carey-show.jpeg


:biggrin:




BMW doesn't really leave much room for improvements/upgrades.

Chances are, it's a matter of time before his wallet hates him.

:biggrin:
Click to expand...

Serious? The car looks absolutely bad-ass IMHO. Very tastefully done and with an absolute beast under the hood.
 
I will be keen to hear about and see your F10. I think if I were looking for an all-around daily use car at this moment in history, and cost were no object, the F10 M5 would probably be my choice. Congrats and I hope you have a fun and safe trip, and enjoy the car in good health!
 
A bunch of Euro Delivery folks are taking a really nice roadtrip (Munich down through Austria, Italy, Monaco, Luxembourg, then over to the Nurburgring, and back), but sadly, I'll probably only be joining them for part of the trip.

The E60 is definitely the most polarizing, looks wise. Visally, the E39 and before had more of the classic appeal, whereas they went more aggressive on the E60 and F10. IMHO, the M versions do look substantially better than the regular, eventhough the cosmetic cues were relatively minor.

Talk with all you guys on the flip side!
 
Enjoy the Autobahn.

Please believe me when I say this: it demands every ounce of attention!!! That means, drink your coffee, read your book, take off your jacket, adjust the seat, etc. and then drive! Enjoy it. And pay attention. I highly recommend driving the Alpenstraße from Munich towards Berchtesgaden.

And one more time: PICS of wife 😀

Edit: Or drive that famous TOP GEAR road from Davos, Switzerland to Stelvio, Italy.
 
Very nice mate! How much faster does it feel compared to stock? My mate has the same gen M6 and it felt insanely fast! It just pulled so hard and fast!

Koing
 
Vdubchaos said:
Congrats OP, nice set up.

Personally I'm not a big fan of that car (design wise), it remind me of:



:biggrin:




BMW doesn't really leave much room for improvements/upgrades.

Chances are, it's a matter of time before his wallet hates him.

:biggrin:
Click to expand...


vdub what's with your BMW trolling? Seriously? You find every opportunity to poke in and spread and bunch of totally false BS... Obnoxious.
 
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