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Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

No problem.. Discuss away..
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80 Turbo - Slightly Modified

924RACR · Posted: Fri Mar 19, 2021 9:37 pm Post subject:

GregSC · Joined: 19 Jul 2008 Posts: 122 Location: Lovely, KY

So last night I was looking through an old Porsche parts catalogue (remember when we used to order from those, lol) and was able to cross reference the tps from the early 944. They actually had the part listed as 93160611900 for the 83-84 944, and then part number 94460611301 for 85 and up 944. Then I opened up a PET catalogue to double check the part number. They didn't list the 931 number, only 94460611301 for that particular range of 944. Finally I went to my nearest Porsche dealer's website and tried the 94460611301 number for the tps. They listed it as available (for the low, low price of $550.00!) and as the superseded part number for the 931 part. Seems to confirm that a 944 tps, at least from the early na, is the same as what came on the S2 931.
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1981 931

924RACR · Posted: Sun Mar 21, 2021 9:07 pm Post subject:

If that's the case - it's no sensor, just a series of switches, and of no use. Though it does indeed look like a modern TPS.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Mike9311 · Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish

Its interesting actually

If you start following the numbers you get updated versions that are supposedly backwards compatible. From the 944 versions you end up at the 968 which has a PN that starts with 944. When you search that one you get a basic Bosch PN and that one leads you to a whole host of cars including late 90's 911's and then Ferrari 355 and others, Saab, 'Volvo'

, etc.

0-280-122-004

This will give you a ton of choices followed by other superseding PN's

Edit: Just ordered a cheap one for testing.

Also: https://rennlist.com/forums/993-forum/524394-need-a-throttle-position-sensor-for-rsr.html
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

Bought 5 new injectors..
Will see if I can’t get em a little more even at very low flow with 9 injectors in my hands to mix and match..

Hopefully help out my idle and very light load conditions run well at higher AFRs..
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80 Turbo - Slightly Modified

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

T belt and tensioner, spark plugs, plug wires, cap, rotor, fuel filter, coolant cap, air box straps, oil filter, injectors, will all be waiting for me..
Should be able to do all that in an afternoon..

Delete fuel accumulator..
Drive to shop and fix/reweld an exhaust hanger..
Retune slightly as needed..

Maybe I can accomplish that..

Planning quite a road trip.. Across the mackinaw bridge..
Want to take the 931..

Would like to hit a dyno one the way out.. One kinda on the way I think..
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80 Turbo - Slightly Modified

Mike9311 · Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish

I have the TPS now for quite some time but need to test it. Everything else is either in hand or on its way. Lower chamber pressure sensor for monitoring takes about a month+ to arrive which is fine (plus I don't need it for CIS-E).

Merc DPR/EHA Connector also inbound for the harness. If I would recommend a DPR to someone else, go "grey" which is VW and has a more readily available connector. Different initial tuning parameters though

Will be moving this over to the proper thread but figured I'd post up here on more time as an update.

I don't know why I like this feature but I really like that FrankenCIS operates like a regular CIS if something goes wrong. Easy limp home mode built in without effort
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

Ooh..
I don’t know anything about the difference between the black and grey DPRs..
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80 Turbo - Slightly Modified

Mike9311 · Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

It’s just a little 2 wire thing.. Mine came with two of them for some reason..

Pretty sure I have an extra one somewhere that I would totally give you but I’m across the country as usual and have no idea where it is...
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80 Turbo - Slightly Modified

Mike9311 · Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish

No problem, thanks, I got one now. At least I'll be able to share the connector body and pin PN's.
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

Mike9311 · Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish

These are for Mercedes "Black" DPR / EHA Only!

0115457128 DPR Connector
0035452626 DPR Connector Pin ...need 2

"Grey" version is VW and has a readily available connector. Grey initial setting on back screw is different from black version
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2596 Location: MI

Fired her up for the first time in long while..
No laptop..

It’s cold.. Still snow..
Finger the plate and TB while girl turns key..
Roars to life..

Rich idle, good sign ECU is working..
Rad fans come on.. ECU must be working..
Fuel cut works.. ECU IS working..
(All at standstill)

Idles, revs, stays cool..

Drove about 4 miles.. Zero brakes (borrowed calipers to test on 941 shaking)..

Creeped slow.. 3rd cruise at most..

Had to hit boost once ya know..
2nd..
Spool, pull, AFR dumps to high 11s, spins lots, clutch, back to creep cruise..

STILL WORKS!!

In garage..
About to go up on blocks to become road worthy..

I can’t wait!
I LOVE this car!!

It’s gonna look so good with the 928 staggered 7/8 gullydeckles on it for the first time after I put the brakes back together..

Mmmmm...
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80 Turbo - Slightly Modified

morghen · Joined: 21 Jan 2005 Posts: 8889 Location: Romania

Wellcome to the 2022 season

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