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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here. Sponsored by Active Autowerke |
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#41 |
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Registered User
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You're wasting your time doing this. The increased fuel pressure will cause the mixture to be richer than it should be. The ECU will see this richer mixture during part throttle (via the O2 sensors) and lean it back out over time with the lambda adaption. The end result will be the EXACT same mixture as running the PROPER 3.5bar regulator.
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Nick
2001 330ci Turbo |
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#42 |
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Registered User
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... It works, becouse the stock injectors are not able deliver enough fuel by 3.5 Bar. Running Engine after 5500 RPM, the mixture getting lean, opened the fuel injectors @ 95% PWR by custom tune, but with full time opened, not enough fuel available for Lambda 0,87 ~ 0,88.
With the 4,0 Bar Pressure Regulator, the fuel pressure is higher, and the injectors are delivering more fuel into the cylinder. With the custom tune and a 90% PWR, Lambda 0,83 is able - we only needed 0,87. Under partitial load, the mapping is running a little bit rich, but lamdba-adaptions are ~ -1,38 on 1-3 and -0,83 on 4-6. Perfect. Getting ~ 320 HP and a failure-entry in the gearbox "over 400NM" |
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#43 |
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Registered User
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#44 |
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Registered User
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Modified the Air-Induction, DME-Software, EGS-Software, More Fuel Pressure and more Pressure
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#45 |
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Registered User
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Nissan 370Z ... Done 900RR Suzuki ... Done 165 mph Speed-Test ... Done =) |
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#46 |
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Registered User
Join Date: Mar 2009
Location: Atlanta (Dunwoody), GA
Posts: 452
My Ride: 2006 E46 330Ci ZHP
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I did not see any cold range sparkplugs nor bigger injectors in the kit.
Jim |
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#47 |
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Registered User
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Spark-Plugs are colder ones and Injectors are Stock, but with higher pressure.
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#48 |
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Registered User
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At what rpm do you start making boost? And at what rpm do you reach half your total boost? Looks like all the power is way up top.
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320i M Sport 02 with laughing gas |
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#49 |
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Registered User
Join Date: Jan 2008
Location: Ridgeland, MS
Posts: 5,345
My Ride: ZHP Custom Stage 3.5
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__________________
..::|TrippinBimmer's Boost Build with Cool Parts|::.. 4**whp/3**tq SAE Corrected |
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#50 |
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Registered User
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Hmm? Please explain to me, what you mean with "...looks like all the power is way up top" ?
Boost is rising constant, from 2000 rpm 0,1 bar; 3000 rpm 0,2 bar; 4000 rpm 0,3 bar, 4500 rpm 0,4 bar 5000 rpm 0,5 bar ... |
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#51 |
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Registered User
Join Date: Jan 2008
Location: Ridgeland, MS
Posts: 5,345
My Ride: ZHP Custom Stage 3.5
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Talking about Peak/Full BOOST.
__________________
..::|TrippinBimmer's Boost Build with Cool Parts|::.. 4**whp/3**tq SAE Corrected |
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#52 |
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Banned User
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can you please confirm that your pressure regulator from the e39 is indeed a 4.0 BAR regulator. I couldn't find the 4.0 bar regulator on the bmw database. do you have the part number to either the reguator or the entire fuel filter?
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#53 |
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Registered User
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i can't confirm, becouse this information is not correct.
e39 530i fuel filter (with pressure regulator) is 3.5 Bar (like E46) - but the pressure regulator is "changable" becouse its secured by a splint. You can release the splint, remove the stock 3.5 bar pressure regulator and replace this one with a bigger one (4.0 bar or more...) but be careful: the stock fuel pump is only able to deliver enough fuel @ 4,0 bar. More pressure = less fuel, becouse the stock fuel-pump isn't able to produce so much boost on the fuel rail @ WOT! |
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