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Join Date: Mar 2010
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Electromotive Settings 88 930

Hi guys

I have had my 88 930 about 6 weeks now. Car has an Electromotive hpv1 ignition.
I want to double check the settings. Car is twin plugged, running .8 bar boost.
10 degrees advance on pulley. How do my seetings look.

Int Setting - 2
3000 - 14
8000 - 0
Rev - 6500

I have replaced the fuel filter, accumulator, spark plugs, and have ordered a set of plug wires from Clewett. I also have a new crank sensor on order.

Car has a slight miss on idle, but runs strong cruising and into boost.
I plan on double checking the grounding for each of the coils and hpv1 control box.
Would like to run ground wires back to the battery.

Please review my settings, and let me know your thoughts.

Thanks in advance.

John
Old 09-07-2012, 03:44 PM
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It's hard to interpret, but I think you are saying:

10 degrees static advance at pulley due to placement of crank sensor + 2 degrees initial = 12 degrees advance at idle... What do you see with a timing light at idle?

If the above deduction is correct, then by 3000rpm you add 14 degrees to the static 10 for a total of 24 degrees BTDC. That is max advance all the way to rev limit. No provision to pull timing on boost.

Personally, I want a way to pull timing on boost, but the HPV1 doesn't have it. I do know a guy who ran a JB racing twin plug distributor set static at 22 degrees BTDC with no advance or retard on his 930. Claimed no issues...anybody remember Sandman?
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Old 09-07-2012, 04:51 PM
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Actually the hpv1 can pulll up to 7 degrees of timing total timing. I will try pulling 4 degrees.
Thanks for resposne.
Old 09-07-2012, 05:30 PM
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Quote:
Originally Posted by jpilcher View Post
Actually the hpv1 can pulll up to 7 degrees of timing total timing. I will try pulling 4 degrees.
Thanks for resposne.
Not an expert on the HPV1 system (I have the XDI2). I just looked at the HPV1 manual online, and I don't see any provision for a MAP sensor. It looks like there is a vacuum advance option (optional vacuum sensor required), but not a boost retard option. If you have the optional vacuum sensor, I suppose you can effectively retard timing until the manifold pressure is equal to atmosphere, but it doesn't look like the unit can be made to respond to manifold pressure greater than atmospheric. Without the optional vacuum sensor, you can only control timing based on RPM.

What set up have you got exactly? Make sure you verify with a timing light please and be careful...too much advance + turbo boost = potential serious damage to your engine.
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1979 930 - Minerva Blue
1983 911 race car
Old 09-07-2012, 11:03 PM
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There's provision for map sensor on hpv, use a 2bar sensor and speak with richard at clewett engineering. Make sure you have a pencil and paper in front of you.
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Old 09-07-2012, 11:32 PM
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Hi Guys

Turns out I have a map sensor installed. I discovered this today.
I ordered a new set of spark plug wires from Richard Clewett. The bottom wires were too short, so I had to move the coil packs further back in the engine bay.
I discovered the map sensor under the coil pack mounting plate.
I double checked timing advance and it was set to 0 degress. So with this new information what should I have my settings set to? I'm going to email Richard Clewett.
Thanks for the help.


Last edited by jpilcher; 09-23-2012 at 05:05 PM..
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