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  Topic: Ignition coil upgrades?
MikeDanger

Replies: 5
Views: 3625

PostForum: 931 Tech.   Posted: Wed Nov 29, 2023 6:14 am   Subject: Ignition coil upgrades?
any new findings here? what Ohm is preferable for S2 DITC?
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Tue Nov 21, 2023 1:58 pm   Subject: What went wrong??
The '81 manual doesn't show an inline resistor and my 81 S2 doesn't have one either. The 0 221 122 023 coil, which is the correct coil for this car has an internal resistance of 0.7 Ohm.
The M31/03 e ...
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Tue Nov 21, 2023 5:28 am   Subject: What went wrong??
anyone? can't find much info on it
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Mon Nov 13, 2023 8:00 am   Subject: What went wrong??
can anyone clarify is the S2 need a resistor on the coil?
and what ohm range?
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Sun Nov 12, 2023 6:02 am   Subject: What went wrong??
A missed cylinder causes a crazy lean reading, actually - due to all the O2 NOT burned.

We're used to thinking we're reading mixture from the WBO2 sensor, but of course we're reading the EFFECT of ...
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Sat Nov 11, 2023 7:34 pm   Subject: What went wrong??
Im wondering if it was a missfire, as in ignition/electrical or a fuel/air issue.

as when this was happening and the car was bucking, I could see the A/F bouncing way lean. But wouldn't an electr ...
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Sat Nov 11, 2023 7:13 pm   Subject: What went wrong??
Ignition modules are notorious to being temperature sensitive.
yeah, I had that happen on a past vehicle, but that one was on the engine. these are on the fender, where air should be readily cooling ...
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Fri Nov 10, 2023 9:02 am   Subject: What went wrong??
The ignition amplifier on the front wing is always a suspect when it comes to misfire, cheap to change aswell.
hmmm, ok, I have a spare, Ill carry that with me.
Would that be something that would wo ...
  Topic: What went wrong??
MikeDanger

Replies: 13
Views: 1855

PostForum: 931 Tech.   Posted: Thu Nov 09, 2023 6:40 pm   Subject: What went wrong??
Well I had the car running "ok" (never perfect; as usual) and managed to get a few long, 100+/- mi. drives in, up to the mtns.

this last time, I almost got stuck 100 miles out. that was k ...
  Topic: What happens if the Decel valve is going bad?
MikeDanger

Replies: 0
Views: 5469

PostForum: 931 Tech.   Posted: Thu Dec 01, 2022 5:57 pm   Subject: What happens if the Decel valve is going bad?
in and on going effort to figure out where my consistent problem lies, one thing I havent checked (since I've checked/replaced almost everything else) is the decel valve. I notice after I set the car ...
  Topic: what would happen...
MikeDanger

Replies: 0
Views: 5482

PostForum: 931 Tech.   Posted: Wed Nov 30, 2022 12:27 pm   Subject: what would happen...
If I installed one of those O2 sensor "check engine light" adapters?

like this one
https://www.ebay.com/itm/254664629579

wondering what effect it would have on the CIS system? especi ...
  Topic: 931 stock boost levels /safe boost levels on stock internals
MikeDanger

Replies: 162
Views: 68938

PostForum: 931 Tech.   Posted: Fri Nov 25, 2022 7:31 am   Subject: 931 stock boost levels /safe boost levels on stock internals
here: https://www.924board.org/viewtopic.php?t=44906&start=0&postdays=0&postorder=asc&highlight=

here is the IC I used https://www.ebay.com/itm/133635760063?hash=item1f1d4fdfbf:g:H ...
  Topic: 931 stock boost levels /safe boost levels on stock internals
MikeDanger

Replies: 162
Views: 68938

PostForum: 931 Tech.   Posted: Fri Nov 25, 2022 7:16 am   Subject: 931 stock boost levels /safe boost levels on stock internals
Still have too much fuel at WOT at full boost (13psi)

Turn up the boost and use the available fuel

ive thought about that, but A I don't want to push my luck (at least until my 951 is ready for ...
  Topic: WTF....runs ok, then doesn't
MikeDanger

Replies: 2
Views: 5724

PostForum: 931 Tech.   Posted: Wed Nov 23, 2022 3:27 pm   Subject: WTF....runs ok, then doesn't
well what im wondering is why disconnecting the throttle switch seemed to clear it up?? (haven't driven it again yet)
  Topic: 931 stock boost levels /safe boost levels on stock internals
MikeDanger

Replies: 162
Views: 68938

PostForum: 931 Tech.   Posted: Tue Nov 22, 2022 7:49 am   Subject: 931 stock boost levels /safe boost levels on stock internals
couple things. The Allen on the bottom of the WUR, DOES NOT stop the boost enrichment. its spring loaded, if you screw that in you will screw up the A/F across the board.

I also disconnected the va ...
 
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