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PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Tuning Idle Spark

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Old May 16, 2008 | 09:14 AM
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Try this one. I threw a VE table in there that should be close.
Flattened out the timing around idle. You had a bad dip (down to 15 deg?) about 1200 rpm.
mynormaltuneforZ-trans mods.EH.hpt
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Old May 16, 2008 | 09:19 AM
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Okay, got it saved and will try. Thanks for all the help. How did you get to these numbers on both spark and the ve?
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Old May 16, 2008 | 09:28 AM
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Originally Posted by RZRSEDGE
Okay, got it saved and will try. Thanks for all the help. How did you get to these numbers on both spark and the ve?
'sperience.............
The VE is from a similar cammed 01. It'll get ya closer
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Old May 16, 2008 | 09:31 AM
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Thanks again.
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Old May 16, 2008 | 05:16 PM
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Report back how it does, curious...
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Old May 17, 2008 | 08:58 AM
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Only got to try it at idle yesterday because of rain. At idle, it seemed do well. After it got warm I revved it a couple of good times and it didn't try and hunt for idle as it returned down. Will do more and report back as time and weather permits. How do you arrive at a good spark table? I see tables adjusted at idle and WOT; and some all across the board. How do you tune this table at areas other than idle and WOT?
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Old May 17, 2008 | 09:06 AM
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From what I've read the best is to use a load bearing dyno and test at different RPM's for MBT. Not feasible for most of us as it would cost a fortune in dyno time.
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Old May 17, 2008 | 09:12 AM
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Unfortunately, I don't have a dyno within miles and miles. Thanks for replying!
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Old May 17, 2008 | 11:34 AM
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Originally Posted by RZRSEDGE
Only got to try it at idle yesterday because of rain. At idle, it seemed do well. After it got warm I revved it a couple of good times and it didn't try and hunt for idle as it returned down. Will do more and report back as time and weather permits. How do you arrive at a good spark table? I see tables adjusted at idle and WOT; and some all across the board. How do you tune this table at areas other than idle and WOT?
Glad to hear its working for you. Now use your histograms to further adjust the VE table.
As for how you arrive at a certain spark table, its all just from experience, and understanding what certain changes do.
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Old May 17, 2008 | 03:24 PM
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Thanks for all the help. I would eventually like to be able gain the experience to do this. Just takes time and practice I'm sure.
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