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Bill Verburg's Avatar
 
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Quote:
Originally Posted by drb930 View Post
So just to be clear if I wanted to run a 95 993 OBD-1 55-pin DME on 94 964-

1) It would require a complete pinout change of the original DME harness.

2) Or use the 95 993 OBD-1 harness and DME.

Varoram requiring 2-wires change on the 95 993 OBD-1 DME???

How much better is the 55-pin 95 993 OBD-1 DME? and what is to be gained from running it?

Also what are the differences and are there any gains to be had from the 94 964 Tiptronic Computer to the 993 Tiptronic computer???

I'm not afraid of wiring, but I don't understand all the hardware differences...Thanks for your input guys!!!

The 993 uses Motronic 2.10.1 which is an updated version of the 964 unit
the big advantage is the hot wire MAF sensor over the 964 barndoor MAF sensor

yes you could rewire the pin outs and connections of the 964 harness not sure how the MAF plugs differ
Here is a pin out map showing the '94-95 non vram and '96-98 RoW vram


there are only 2 differences between non vram and vram pin1 & pin 32
on US cars pin 2 & pin 54 are connected on RoW they are left open this just affects the stock maps and the central informer messages you also nee a chip change the chip for vram activates pin1 & 32 differently

all in all it's a lot easier to use a 993 harness, there is only 1 55pin version it has all the connections for both vram and non vram you just choose the ones you are using

I mapped some of the tip pin outs but they didn't particularly concern me
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Old 02-25-2015, 02:49 PM
  Pelican Parts Technical Article Directory    Reply With Quote #201 (permalink)
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Quote:
Originally Posted by FredC View Post
Hi guys, quick question: I have a '91 964C4, can I simply swap in 993 stock 993 front shocks or do I need to make modifications to the 993 shocks? thanks! Fred C.
The 993 struts use a 14mm and a 12mm bolt to connect the wheel carrier the 964 use 2x 12mm bolts this would have to be addressed
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Old 02-25-2015, 02:51 PM
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So I just need to buy 2X14mm bolts & I'm off to the races? Sounds too easy!
Old 02-28-2015, 07:02 AM
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Quote:
Originally Posted by Bill Verburg View Post
The 993 struts use a 14mm and a 12mm bolt to connect the wheel carrier the 964 use 2x 12mm bolts this would have to be addressed
The same goes for the 94 turbo. It uses the 14mm and 12mm bolts.
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Old 02-28-2015, 03:33 PM
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Hello

I have owned a 930 for years and become a custom to adjusting AFR's and keeping her running at its best, In the past I have owned a 88 Carrera and Very simple to work on also.

I just bought a 97 993 OBDII car, there seems to have alot going on in the engine compartment, Should of i stayed with a OBDI car ? It looks like a steep learning curve , Any tips on what to look for that can go bad? Wiring , vacuum connections and so on ?
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Old 04-19-2015, 06:38 AM
  Pelican Parts Technical Article Directory    Reply With Quote #205 (permalink)
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Originally Posted by heliolps2 View Post
Hello

I have owned a 930 for years and become a custom to adjusting AFR's and keeping her running at its best, In the past I have owned a 88 Carrera and Very simple to work on also.

I just bought a 97 993 OBDII car, there seems to have alot going on in the engine compartment, Should of i stayed with a OBDI car ? It looks like a steep learning curve , Any tips on what to look for that can go bad? Wiring , vacuum connections and so on ?
There is no doubt that OBD1 is easier to deal w/ but it's a bit late for you to do much about it.

The biggest issue is SAI which tends to get clogged ports as mileage accrues, The OBD2 system then throws a CEL,which you can safely ignore until it's time for state inspection where the CEL code will cause the car to fail to pass. You can read all about SAI in another sticky.

next on the list of possible issues is chiping the car for performance gains, If you want to do that it will be more expensive and must be done by a competent shop, Steve Weiner @ Rennsport Systems can help in this area.
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Old 04-20-2015, 02:32 PM
  Pelican Parts Technical Article Directory    Reply With Quote #206 (permalink)
 
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964 front bumper

..
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"IGNITION LEFT OF STEERING"

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Old 09-22-2015, 06:59 PM
  Pelican Parts Technical Article Directory    Reply With Quote #207 (permalink)
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This is the auxiliary(second) oil cooler kit used on 993 Cup and RSR, it also fits all 964 models

This one is sandwiched w/ the AC condenser on the left side of the car






Stock lines


W/ secondary lines installed



lines run down and across the front


second cooler sanwiched betweeen AC condenser and stock fan


final connections



Alternatively a stock cooler can be installed on the left but plumbing is more difficult

These are stock coolers, the I/O ports on top make the installation more difficult toi plumb

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Old 06-25-2017, 11:27 AM
  Pelican Parts Technical Article Directory    Reply With Quote #208 (permalink)
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Air cooled aero summary
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Old 07-01-2017, 07:46 AM
  Pelican Parts Technical Article Directory    Reply With Quote #209 (permalink)
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