ltc

No difference

The use of twisted pair (differential) vs single ended wiring to each O2 sensor would likely have the greatest influence on susceptibility (or immunity).

Wire gauge would impact the routing and ease of use in routing, followed by vibration/damage resistance (if you use very small gauge wire).

The (terminal blocks on the) PCB can accommodate a wide range of wire gauges and single ended or differential wiring to each O2 sensor.

earossi

I may be jumping the gun a bit, but have any of the guys installed their kits on a 97 or 98 car as of yet? Earlier, someone had speculated that the later cars might have different ECU programming logic that would look for different voltage levels in order to determine that the SAI circuit was operating correctly.

Since I won't be installing my circuit until this next week on my 98 C2S, I thought that I'd ask so that if there is an issue, it could be discussed and a solution offered before I install my box.

Any input would be greatly appreciated.

911Dave

Good. It sounds like cat 5e with (4) 24 ga twisted pairs ought to be the ticket.

Deadeye

Dave, where would one source this wire?

earossi

What type/spec of wire did you source and from where? I stopped by Radio Shack today and they did not have any single twisted pair shielded wire of any gauge!

ltc

I would suggest www.digikey.com
They should be able to supply any cable or wire.
If your order is in before 8PM, they ship the same night.

ltc

Find any Ethernet cable (Walmart, Target, etc) cut the RJ45 connectors off, that's it.

911Dave

^ yup.

You can also buy it at Lowes, Home Depot, Meijer, whatever ya got.

earossi

Bought some Cat 5E cable at Home Depot. I cut the connectors off and then pulled back the sheath on the cable and there was no shielding. Just 4 twisted pairs. Can I use this cable successfully, or should I find some that is shielded?

aerocrosby

Please put me down for 2 assembled and enclosed units if/when the second batch become available. And thanks very, very much!

cabrio993

Lewis,

Received mine yesterday and admired its beauty while eating left over turkey. Thanks so much for doing this. Sending payment today.

mcipseric

Hi Lewis,
I would like this insurance policy!
Could you put me down for one complete assembled unit?
Thank you,

Eric

Richard C2S

Lewis,

Please add me to your list for a complete, assembled unit.
Thank you very much.

Ash

Added: latest additions to 2nd Round List: mcipseric, Richard C2S, eyelasher1, rbettenhauser
Added (by Lewis): latest additions to 2nd Round List (via PM request): jgingera, maestromaestro, ptsheridan

This list for the first round of boards is now closed. I've started a Waiting/Back-up list below for those that missed this first run.

Quick reminders:
1) unless otherwise noted, it's assumed you are asking for an assembled unit.
2) enclosures are optional - feel free to update/ Post a reply/ PM and I'll update the list if you are looking for an enclosure.

Payment Info posted by Lewis (from post #147):
Once assembled, I will start sending PM's so folks can provide me their shipping addresses. Inside the package will be the unit, a hardcopy of the schematic, a hardcopy of the PCB layout and a return address envelope. When you get the unit and everything is OK, just use the envelope to send payment. I am a trusting person when it comes to RL members, so I have no problem sending out the units prior to receiving payment.

1. vincer77 - 1
2. Rick Lee - 1
3. Aircooled Dave - 1
4. michaelh993 - 2
5. tonypai - 1 + enclosure
6. fullbooker - 1 + enclosure
7. NP993 - 1 + enclosure
8. flying low - 4
9. ilko - 1 + enclosure
10. 600RR - 2 + 1 enclosure only
11. Shahrams - 2 + enclosures
12. bw993 - 1
13. tbil - 1 + enclosure
14. Teddy2 - 1 + enclosure
15. Ash - 1 + enclosure
16. 993BillW - 1 + enclosure
17. Dan V - 1 kit
18. efong - 1 + enclosure
19. AW21 - 2 + enclosures
20. NC TRACKRAT - 1 assembled + 1 kit + 2 enclosures
21. cabrio993 - 1
22. Paul M - 1 + enclosure
23. tropheus - 2 + enclosures
24. C4SJOHN - 2 + enclosures
25. MDamen - 1
26. TheBen - 1
27. JPS - 1
28. air993 - 1 + enclosure
29. alpinadvl - 1 + enclosure
30. rsa964 - 1
31. cdmdriver - 1
32. Jeff96-993 - 1 + enclosure
33. Kaefer - 2 + enclosures
34. SimonM_98 - 1
35. CarreraX - 2 + enclosures
36. skypig - 1 + enclosure
37. Don't lift - 1 + enclosure
38. 2ndof2 - 1
39. Richard W - 1 assembled + 1 kit + 1 enclosure
40. Amfab - 1 + enclosure
41. M Fig - 2
42. e3photo - 1
43. 911Dave - 1
44. kraftsman - 1 + enclosure
45. PNogC2S - 1
46. CAHRERA - 1
47. slapshot - 1 + enclosure
48. bpras@msn.com - 2
49. Blue TTop - 2 + enclosures
50. rdevany - 1 kit + 1 enclosure
51. earossi - 1 + enclosure
52. sdrake - 1
53. cmat - 1 kit + enclosure
54. Teddy2 - 1 + enclosure
55. jaguarandi - 1 + enclosure
56. Biggdawg - 2 + enclosures
57. mike cap - 1 + enclosure
58. deekay911 - 1 + enclosure
59. helmet993 - 1 + enclosure
60. ppressle - 1 kit
61. southsong - 1 + enclosure
62. V33 - 2 + enclosures
63. nels415 - 1 + enclosure
64. vr416v - 1 + enclosure
65. Don Plumley - 1
66. Matt Lane -1 + enclosure
67. Jim W - 1 + enclosure
68. TxnBluDvl - 2 + enclosures
69. mpgandco - 2 + enclosures
70. GRINBOB - 1 kit + 1 enclosure
71. beagling - 1 + enclosure
72. Jscanavan - 2 kits + 2 enclosures
73. Richard Lee - 1 + enclosure
74. dbog - 1 + enclosure
75. bootman30 - 1
76. 77'3.6vram - 3 + enclosures

Backup/Waiting/2nd Round List

1. DryFly - 1 + enclosure
2. ESL - 1 + enclosure
3. timothymoffat - 2 + enclosures
4. suffi - 1 kit
5. tom97c4s - 2 + enclosures
6. lizSter - 1 + enclosure
7. SCMomentum - 2 + enclosures
8. elfefan - 1 + enclosure
9. deadeye - 2 + enclosures
10. FisterD - 4 + enclosures
11. rc16 - 2 + enclosures
12. tbrom - 1 + enclosure - Please Confirm
13. jimbo3 - 2 + enclosures
14. skl2 - 2 + enclosures
15. mikej - 2 + enclosures
16. GC96 - 1 + enclosure
17. Cincy_Ron - 1 kit + enclosure
18. coreseller - 1 + enclosure
19. boostid - 1 + enclosure
20. GD993C4 - 1 + enclosure
21. Howdy993 - 1 + enclosure
22. Mike J - 1 + enclosure
23. 996Carrera - 1 + enclosure
24. markc123 - 2 + enclosures
25. LAT - 2 + enclosures
26. Mercedesben - 1 + enclosure
27. scphelps1 - 1+ enclosure
28. aerocrosby - 2 + enclosures
29. rbeggs - 1 + enclosure
30. mcipseric - 1 + enclosure
31. Richard C2S - 1 + enclosure
32. eyelasher1- 1 + enclosure
33. jgingera - 1 + enclosure
34. maestromaestro - 1 + enclosure
35. ptsheridan - 1 + enclosure
36. rbettenhauser - 1 + enclosure

Debra 785

If you have issues with Secondary Air Injection ports being blocked or you want to remove the entire SAI system from your '96 - '98. '95s have the system but the ECU does not check if the system is working correctly.

The blocked ports issue shows up as OBD errors:

P0410 - Secondary Air Injection System: Malfunction
P1411 - Manufacturer specific code