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Autothority vs. Porken chips
I re-chipped the '86.5 928 automatic with both Autothority chips and, frankly, find no performance improvement. The old girl is still lethargic up to 30 mph and then she condescends to pick up her skirts and hustle. But not noticeably better than before. At the same time we gave her new plugs, wires, coils, and a rotor. Timing is per the manual. The filters are KB and clean.
Any advice about investing in Porken chips? Any advice about off-the-line acceleration? Could something be being lost in the transmission? 
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11-03-2010, 01:05 AM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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I put the Porken chips in they rock. nuff said..
[Porken Power chips how to install them in an 85 /86/86.5
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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11-03-2010, 04:31 AM
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Registered User
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Thanks. Where can I get a set? I can't find a web site. And, do I need to upgrade the '86.5 fuel regulator?
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11-03-2010, 05:23 AM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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use this link for the latest instructions for installations,
and scroll down and look for the S300s chipset , it also has a list of the parts required to complete the installation. this is what I put in my car PorKen Products
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats Last edited by Mrmerlin; 11-03-2010 at 01:37 PM.. |
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11-03-2010, 05:53 AM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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AA chips were questionable back in 86, and not improved since. Porken has improved on them.
Does Roger have the chips, Home - 928's R Us Online Parts Catalog |
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11-03-2010, 09:57 AM
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928 Newbie
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Get the Stage ii Porken that requires the 87+ fpr . I plan on getting them soon as I sort the car, but response has been very positive for the S3
"Wakes the car up" [girlfriend will be in a thong not a long skirt..LOL] |
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11-03-2010, 12:43 PM
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inventor
Join Date: Jun 2007
Posts: 136
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AT chips were crudely done back in '91. Some extra fuel at about 3/4 load, and more advance in some places at part throttle. The WOT maps were unchanged. IE. at full throttle they are completely stock! (The rev limit is also stock at 6380.)
All '85-'86 eBay chips are copies of AutoThority, their 'copyright' notice is still in the code. You can read about how my chips are different here - S300s.com
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POWERED BY PORKEN 1986 928S3 AT grandprixweiß weinrot #11951988 928S4 MT polarsilberm sw/grau #1023 liftbars.com porken.com S300s.com
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11-04-2010, 08:45 AM
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Banned
Join Date: Mar 2007
Location: Ft.Lauderdale, FLORIDA
Posts: 2,813
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I put Porken's ignition chip in my 928, and I have to say that it has cost me money.
-I can't keep a set of tires on this car anymore! LOL! Ken's chip made a definite difference. Around town the car is "snappier". It is a 1985 928S2, and has big-valve heads and longer duration cams than the typical '85 928, and prior to the chip it felt weak until 3000 rpm. The chip makes the car peppier at low rpms and non-full throttle operation. Just driving around town, it makes the car feel more powerful. The only downside is that you now HAVE to put premium in the tank, because the chip advances the timing as far as can be gotten away with without burned pistons. I haven't run on a dragstrip in a decade, but I bet this chip adds a mph. The car FEELS faster- but make sure you put the best gas you can find in the tank. |
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11-04-2010, 03:55 PM
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Track 928
MoneyPit
