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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Super charger levels without super charger?



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      11-06-2015, 10:07 AM   #1
gunnerxq
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Super charger levels without super charger?

So someone awhile back mentioned they are working on getting super charger levels of HP without the supercharger. Somehow by changing the internals. Spring rates....
Do you guys know of any updates?

I'd be more willing to go that route then the supercharger way.
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      11-06-2015, 10:33 AM   #2
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spring rates?

You would need a different intake manifold (shorter runners, larger plenum). You will lose low end torque, but gain top end power.

Then you will need headwork - custom cams (which haven't worked out well), possibly larger intake valves, port work.

then you would need a higher redline - 7500+rpm. and of course custom tuning to make it work. Plus usual stuff like headers & exhaust. And maybe bottom end work depending on how that holds together (I think 7500-7700 should be OK).

It's not impossible, it's just not cheap, and it won't happen with your typical bolt ons. In fact, a supercharger may be a bit cheaper than a custom N/A build for the same amount of power. plus you get to keep your stock low end torque from the 3 stage manifold.
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      11-06-2015, 10:47 AM   #3
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Quote:
Originally Posted by hassmaschine View Post
spring rates?

You would need a different intake manifold (shorter runners, larger plenum). You will lose low end torque, but gain top end power.

Then you will need headwork - custom cams (which haven't worked out well), possibly larger intake valves, port work.

then you would need a higher redline - 7500+rpm. and of course custom tuning to make it work. Plus usual stuff like headers & exhaust. And maybe bottom end work depending on how that holds together (I think 7500-7700 should be OK).

It's not impossible, it's just not cheap, and it won't happen with your typical bolt ons. In fact, a supercharger may be a bit cheaper than a custom N/A build for the same amount of power. plus you get to keep your stock low end torque from the 3 stage manifold.
To summarize:
If you want the extra power the simplest way to go about it is to either get an E90/E92 M3 if you want to stay NA or 335 if you don't mind turbos.
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      11-06-2015, 11:12 AM   #4
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335i would be cheapest most likely, which is why so many have them.

M3 would be nice, but they are still worth 2-3x as much as an N52 powered 3 series. an SC would be cheaper in that case, but not as fast.
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      11-06-2015, 12:01 PM   #5
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http://www.1addicts.com/forums/showthread.php?t=1165749

See that link

He has 385 without any fi
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      11-06-2015, 12:15 PM   #6
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race engine. probably $10,000 in engine management/tuning alone.
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      11-06-2015, 01:09 PM   #7
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He's selling the engine and if I did the currency conversion correctly, it's about $18,800 US.

It also appers as though they hook the engine right to the Dyno. An S54 engine would be the way to go, if. . .
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      11-06-2015, 02:18 PM   #8
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Get one from a Z4M. The electronics should play nicely with the E90. Use an MSV70 CAS2 module from a 330i and blank out the ISN chip, re-synch it and it should basically plug in with a few wiring mods.
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      11-06-2015, 02:46 PM   #9
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Quote:
Originally Posted by hassmaschine View Post
Get one from a Z4M. The electronics should play nicely with the E90. Use an MSV70 CAS2 module from a 330i and blank out the ISN chip, re-synch it and it should basically plug in with a few wiring mods.
What he said!
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