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Join Date: Mar 2010
Location: Hamilton, On
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Noise Filter

Hi guys

Just wondered if anyone has installed a noise filter on their EFI installations?
Similar to the link attached:

American International S-25A Power line noise filter at Crutchfield.com

Regards

John

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1988 Porsche 930 Targa - 3.4L Twin Plug Motor, DC 13 Cams, Supertec Head Studs, ARP Rod Bolts, Port and Polished Heads, Garretson Andial Intercooler, GSX 61 BB Stage 5Turbo, Tial F46 WG .8 Bar Spring, PowerHaus Headers, Rarly8 Dual Tip Muffler, MS3 Pro EFI conversion, 57lbs. Cobra Injectors, Center Force Stage 2 Clutch , Rebuilt 4 Speed with LSD.
Old 01-01-2015, 01:50 PM
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No, why would you do this?
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Trond R.
1979 930: Garret GT35r turbo, EFI, carerra intake, Link EMS, custom GT2 cams, 98mm JE P/C, 964 crank (stroker), custom valves & ported (XtremeCylinderHeads) etc..etc..
1972 914-6 GT replica project
1986 944 Turbo
Old 01-01-2015, 02:18 PM
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To cleanup power signal going to EFI computer.
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1988 Porsche 930 Targa - 3.4L Twin Plug Motor, DC 13 Cams, Supertec Head Studs, ARP Rod Bolts, Port and Polished Heads, Garretson Andial Intercooler, GSX 61 BB Stage 5Turbo, Tial F46 WG .8 Bar Spring, PowerHaus Headers, Rarly8 Dual Tip Muffler, MS3 Pro EFI conversion, 57lbs. Cobra Injectors, Center Force Stage 2 Clutch , Rebuilt 4 Speed with LSD.
Old 01-01-2015, 02:23 PM
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Quote:
No, why would you do this?
Every signal needs filtering in EFI from what I've been told. I've been talking with a coworker for along time that is an EE about EFI.

I wonder how good it would clean up my EFI? May try one, one day.
Old 01-01-2015, 03:32 PM
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Did it help equalize readings between computer and o2 sensor?
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1988 Porsche 930 Targa - 3.4L Twin Plug Motor, DC 13 Cams, Supertec Head Studs, ARP Rod Bolts, Port and Polished Heads, Garretson Andial Intercooler, GSX 61 BB Stage 5Turbo, Tial F46 WG .8 Bar Spring, PowerHaus Headers, Rarly8 Dual Tip Muffler, MS3 Pro EFI conversion, 57lbs. Cobra Injectors, Center Force Stage 2 Clutch , Rebuilt 4 Speed with LSD.
Old 01-01-2015, 04:48 PM
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I will have to give this a try.
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1988 Porsche 930 Targa - 3.4L Twin Plug Motor, DC 13 Cams, Supertec Head Studs, ARP Rod Bolts, Port and Polished Heads, Garretson Andial Intercooler, GSX 61 BB Stage 5Turbo, Tial F46 WG .8 Bar Spring, PowerHaus Headers, Rarly8 Dual Tip Muffler, MS3 Pro EFI conversion, 57lbs. Cobra Injectors, Center Force Stage 2 Clutch , Rebuilt 4 Speed with LSD.
Old 01-01-2015, 05:14 PM
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I see a lot of (I think) microsecond fluctuations in my injector opening times. Been wondering if it's linked to fluctuations in the 12v input power.

I see tenths of a volt fluctuations in my tuning software, usually just a tenth here and there.

Old 01-01-2015, 05:18 PM
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