How to go about Cam Surge tuning
08-17-2011, 09:44 PM
#1
How to go about Cam Surge tuning 408 LQ4
Stock LS3 heads and intake
231/239 114+2
So the truck runs great WOT but horrible while trying to idle at low speed, around parking lots, and coming to stop lights. Surges until it dies when coming to a stop in gear.
I'm brand new at tuning. So any input and explanations will help. Thanks guys
The start up log attached is simply an idle log. It doesn't show the surging so I know it won't help. Just thought it would be better than nothing
Stock LS3 heads and intake
231/239 114+2
So the truck runs great WOT but horrible while trying to idle at low speed, around parking lots, and coming to stop lights. Surges until it dies when coming to a stop in gear.
I'm brand new at tuning. So any input and explanations will help. Thanks guys
The start up log attached is simply an idle log. It doesn't show the surging so I know it won't help. Just thought it would be better than nothing
08-18-2011, 05:13 AM
#2
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You need to add to your running airflow table, aka RAF's. There's not a real simple way to explain it in layman terms, but you need to log your desired airflow vs ECT, and plug those values into your running airflow table.
08-18-2011, 07:43 AM
#3
I had a very noticeable improvement with surging after adjusting my injector timing.
Getting the RAF, mixture adjustment, injection timing and reducing idle/low RPM timing helped mine the most. I've almost eliminated surging, but I still have a little more tweaking to do once I get the new project rolling.
Getting the RAF, mixture adjustment, injection timing and reducing idle/low RPM timing helped mine the most. I've almost eliminated surging, but I still have a little more tweaking to do once I get the new project rolling.
