idle timing?
I would find the best spark position, then take out 5 degrees and give it to
the underspeed table like macca says. That table is messed up in some years,
check it and make sure it's not set to "give up" at high underspeed.
the underspeed table like macca says. That table is messed up in some years,
check it and make sure it's not set to "give up" at high underspeed.
my spark cells and around it are at 29 and the over/under and correction tables are stock. make sure your ve is spot on, your timing table is smooth and if you are trying to run closed loop expect it to over-fuel at idle. i run open loop only.
No. You set advance a ~5 degrees less than maximum vacuum (or lowest kPA) to give the idle spark over/under speed correction tables enough range to do their job.
When the idle spark is set at maximum vacuum (or lowest kPa) it is hyper-sensitive to any change in fuel/air/spark which makes it difficult to achieve a smooth idle.
When the idle spark is set at maximum vacuum (or lowest kPa) it is hyper-sensitive to any change in fuel/air/spark which makes it difficult to achieve a smooth idle.
Trending Topics
Banned
Joined: Apr 2011
Posts: 49
Likes: 0
No. You set advance a ~5 degrees less than maximum vacuum (or lowest kPA) to give the idle spark over/under speed correction tables enough range to do their job.
When the idle spark is set at maximum vacuum (or lowest kPa) it is hyper-sensitive to any change in fuel/air/spark which makes it difficult to achieve a smooth idle.
When the idle spark is set at maximum vacuum (or lowest kPa) it is hyper-sensitive to any change in fuel/air/spark which makes it difficult to achieve a smooth idle.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
