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Do you guys think my ignition system is weak?

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Old Oct 11, 2010 | 02:48 PM
  #21  
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Originally Posted by Quamen
str8dum1 just said he ran the same psi supercharged on a stock block with stock gap and a colder plug. Apples to apples comparison.

It sounds to me like poor grounding though. Check that you have a good ground on your engine still. Check the plug holes and the bottom of the plugs for corrosion that might make for a poor ground. Check the connectors in the coils for corrosion and buildup. Replace the spark plugs just to verify.

All these options are much cheaper and easier to do than an ignition booster.

You should be able to run at least in the mid .03X's for gap at your level with the stock ignition. Assuming you have good engine grounding, the stock ignition is more than capable of good spark for only 17psi with normal compression.
Sorry, didn't read the stock block part.

Anyways...it seems like my wideband is reading leaner than it should...at the dyno I would be at 10.0 ( the lowest it reads ) and my car saying 11.8 or so. Today I'm going to calibrate it again to see what's up. Being too rich could explain the misfires.
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Old Oct 12, 2010 | 07:50 AM
  #22  
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Aren't you also running some type of water injection? This is very taxing on an ignition system and a device that ramps up the primary ignition voltage may be in order (like the HKS DLI).
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Old Oct 12, 2010 | 10:25 AM
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Originally Posted by GT-ER
Sorry, didn't read the stock block part.

Anyways...it seems like my wideband is reading leaner than it should...at the dyno I would be at 10.0 ( the lowest it reads ) and my car saying 11.8 or so. Today I'm going to calibrate it again to see what's up. Being too rich could explain the misfires.
What do the widebands say in Cipher? I've found mine to be pretty accurate.

I had the same issue with the Dyno showing 10.0 and my crappy AEM UEGO at 11.5 or so.
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Old Oct 12, 2010 | 06:53 PM
  #24  
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I just added a voltage booster and seems to have helped, roads are wet right now so cant test it completely, but the little dry area I was in I gave it some gas and didnt feel any obvious misfires. In my case it looks like it was the lack of ignition juice. Grounding does also make sense however. Still running .026gap
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Old Oct 12, 2010 | 07:13 PM
  #25  
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Originally Posted by djamps
What do the widebands say in Cipher? I've found mine to be pretty accurate.

I had the same issue with the Dyno showing 10.0 and my crappy AEM UEGO at 11.5 or so.
My car is an 03 G35...no oem wideband for me.

When I get everything back together I'm going to regap the plugs to .030 to see if the misfire goes away. I'm pretty sure it's my a/f ratio being far too rich.
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Old Oct 17, 2010 | 04:15 PM
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Originally Posted by Brett@AwesomeZ
Aren't you also running some type of water injection? This is very taxing on an ignition system and a device that ramps up the primary ignition voltage may be in order (like the HKS DLI).
If I may ask, why does having water injection cause such demands from the ignition system? is it because of more turbulence in the mixture making it harder to ignite?
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Old Oct 17, 2010 | 07:47 PM
  #27  
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I'm not running water injection FWIW.

I regapped to .030. I'm just waiting to get my SC repaired...hopefully tomorrow.
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