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  Topic: What happens if the Decel valve is going bad?
MikeDanger

Replies: 0
Views: 763

PostForum: 931 Tech.   Posted: Thu Dec 01, 2022 6:57 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: 764

PostForum: 931 Tech.   Posted: Wed Nov 30, 2022 1:27 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: 118
Views: 9328

PostForum: 931 Tech.   Posted: Fri Nov 25, 2022 8:31 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: 118
Views: 9328

PostForum: 931 Tech.   Posted: Fri Nov 25, 2022 8:16 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: 923

PostForum: 931 Tech.   Posted: Wed Nov 23, 2022 4:27 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: 118
Views: 9328

PostForum: 931 Tech.   Posted: Tue Nov 22, 2022 8:49 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 ...
  Topic: WTF....runs ok, then doesn't
MikeDanger

Replies: 2
Views: 923

PostForum: 931 Tech.   Posted: Mon Nov 21, 2022 4:07 pm   Subject: WTF....runs ok, then doesn't
I figured out (to an extent) what my problem was before. I had the Mixture too lean, and I guess the Abacus was trying to fight it, which is why the idle would bounce up and down. So i ended up disco ...
  Topic: 931 stock boost levels /safe boost levels on stock internals
MikeDanger

Replies: 118
Views: 9328

PostForum: 931 Tech.   Posted: Mon Nov 21, 2022 3:37 pm   Subject: 931 stock boost levels /safe boost levels on stock internals
you really need to add an IC. honestly can't believe it didnt come with one.
and Front mount, not the idiotic top mount.

Im running 13psi. so far so good (with US 8.0:1) pulls quite good, except ...
  Topic: Interesting boost "sensing" set up
MikeDanger

Replies: 0
Views: 2196

PostForum: 931 Tech.   Posted: Sun Sep 04, 2022 3:03 pm   Subject: Interesting boost "sensing" set up
Not the crappy kind we already have that goes way to rich (I already run mine with the port unplugged!)

https://www.lotustalk.com/threads/warm-up-regulators-cpr-boost-vac-sensing-multi-port-fuel-en ...
  Topic: Running lean at Cruise/ after getting hot.
MikeDanger

Replies: 2
Views: 715

PostForum: 931 Discussion   Posted: Sun Sep 04, 2022 2:21 pm   Subject: Running lean at Cruise/ after getting hot.
I just pressure tested the intake from the top of the Fuel meter back, all good.
  Topic: Running lean at Cruise/ after getting hot.
MikeDanger

Replies: 2
Views: 715

PostForum: 931 Discussion   Posted: Mon Aug 29, 2022 9:06 am   Subject: Running lean at Cruise/ after getting hot.
just when I think I have it under control...nope.

I have played with the WUR every which way: First here is what was happening, I don't know if they are related.

Things seemed to be ok, I took i ...
  Topic: going to rich off the line, can't figure it out.
MikeDanger

Replies: 19
Views: 9254

PostForum: 931 Tech.   Posted: Wed Jun 22, 2022 6:14 pm   Subject: going to rich off the line, can't figure it out.
also BTW I eliminated the vac line to the WUR, now it doesn't go overly rich
  Topic: going to rich off the line, can't figure it out.
MikeDanger

Replies: 19
Views: 9254

PostForum: 931 Tech.   Posted: Wed Jun 22, 2022 3:28 pm   Subject: going to rich off the line, can't figure it out.
well for anyone following along:

Ok, well, I finally got a chance to give it a drive. this time completely with the O2 disconnected. (but I still had the narrow band gauge connected to the O2)

o ...
  Topic: going to rich off the line, can't figure it out.
MikeDanger

Replies: 19
Views: 9254

PostForum: 931 Tech.   Posted: Wed Jun 15, 2022 6:20 am   Subject: going to rich off the line, can't figure it out.
Finally got a chance to play around with it more.
So I got a new o2 sensor.
But first I hooked up the Narrow band o2 gauge and put a connector in line so i could disconnect the O2 easier.

First I ...
  Topic: going to rich off the line, can't figure it out.
MikeDanger

Replies: 19
Views: 9254

PostForum: 931 Tech.   Posted: Sun May 29, 2022 5:40 am   Subject: going to rich off the line, can't figure it out.
Hrmmmmm, I just tested the o2 sensor, by putting a volt meter to it and using a torch. don't know about the accuracy, but it did show up to .9v got the tip red hot.

same with the old (previsou o2) ...
 
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