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Stoolz Stoolz is offline
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Default hpfp oscillating - 07-23-2019, 09:40 PM

Hi brains trust.

Anyone know why my hpfp is oscillating like crazy?
It's not lpfp. I have them powered up direct and enough lp for 1000whp. Its not the fuel lines either they are all new, as is the hpfp.
As you can see afr follows it.
Don't know why the ECU would be doing this if that's the case.
My car has had an issue for YEARS now, might be tracking it down now I hope.

Cheers,
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2011 135i Dct coupe Alpine white n blacked out.
VTT DBB,Pure Inlet, JB4,GFB DV+,MHD,Fuel-it Platinum PI with Cm 5 - 50:50 Meth, E85, N20 tmap, Fuel It S2 lpfp, KB Boost A Spark, BMS IC /CP / IT / OCC, SG Boost Pipe, Quaife LSD, Federal RS-RR,M4 Flywheel, SSP R spec clutches, Kw V3 & Pro rolled guards, AR CL **, Bmw PE. Custom mi**ipe kitties. 1000wrms custom audio.
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Payam @ BMS Payam @ BMS is offline
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Default 07-24-2019, 10:12 AM

Got the CSV ?


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Stoolz Stoolz is offline
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Default 07-24-2019, 12:51 PM

Pagan,

There is no JB4 on the car at the moment because we pulled it back to stock for fault finding.
Logs are done with MHD and I believe it's the S2+ map.
Unusually Oil pressure seems to fluctuate as well.
I think the hpfp and oil pump are both mechanically driven from the same chain so that may be a lead??

Thanks,
Ant.


2011 135i Dct coupe Alpine white n blacked out.
VTT DBB,Pure Inlet, JB4,GFB DV+,MHD,Fuel-it Platinum PI with Cm 5 - 50:50 Meth, E85, N20 tmap, Fuel It S2 lpfp, KB Boost A Spark, BMS IC /CP / IT / OCC, SG Boost Pipe, Quaife LSD, Federal RS-RR,M4 Flywheel, SSP R spec clutches, Kw V3 & Pro rolled guards, AR CL **, Bmw PE. Custom mi**ipe kitties. 1000wrms custom audio.
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Stoolz Stoolz is offline
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Car: 11 135i
Default 07-25-2019, 02:44 PM

Anybody on here ever see this crazy kind of thing?
Back story, my car had a huge misfire , more of a "let go" any tune even stock.
Pulled everything out and had a damage tmap ground for some reason. Grounded it locally but same issue.
Since then I have replaced
Harness's
almost every sensor.
lpfp
hpfp
fuel lines and regulator/filters
ecu
the dct box.
The engine, it's now 235 long motor
Something fishy going on.
Doesn't seem like the oscillation is mechanical.
Someone save me.


2011 135i Dct coupe Alpine white n blacked out.
VTT DBB,Pure Inlet, JB4,GFB DV+,MHD,Fuel-it Platinum PI with Cm 5 - 50:50 Meth, E85, N20 tmap, Fuel It S2 lpfp, KB Boost A Spark, BMS IC /CP / IT / OCC, SG Boost Pipe, Quaife LSD, Federal RS-RR,M4 Flywheel, SSP R spec clutches, Kw V3 & Pro rolled guards, AR CL **, Bmw PE. Custom mi**ipe kitties. 1000wrms custom audio.
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Stoolz Stoolz is offline
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Car: 11 135i
Default 07-29-2019, 02:22 AM

Bump. Help me Oprah Winfrey, Help me Tom Cruise.


2011 135i Dct coupe Alpine white n blacked out.
VTT DBB,Pure Inlet, JB4,GFB DV+,MHD,Fuel-it Platinum PI with Cm 5 - 50:50 Meth, E85, N20 tmap, Fuel It S2 lpfp, KB Boost A Spark, BMS IC /CP / IT / OCC, SG Boost Pipe, Quaife LSD, Federal RS-RR,M4 Flywheel, SSP R spec clutches, Kw V3 & Pro rolled guards, AR CL **, Bmw PE. Custom mi**ipe kitties. 1000wrms custom audio.
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