2 things IMO:
1. Kdanner is correct, 3.31 or even stock 3.15 gears are a better fit. The ideal situation is to go thru the traps at the top of 3rd gear with a locked converter. Adding another shift physically takes time. Log a WOT run thru the gears and you will see how long each gear change actually takes. Reducing 1 gear change will drop ET's and increase MPH. Same reasoning behind staying in 4th in a manual vs shifting into 5th.
2. I have the spark tables scaled to 1.5 load for use on *other* applications. If the JLT CAI is throwing off the load calcs by even .1 spark can be greatly affected, causing a loss of power. Knock sensors are only allowed to add a little timing as well.
This is why logging post-tune is so important.
Of course, Nick has been 'testing' the new Auto Idle lope tune. Due to the massive amount of revisions I'd sent him I did not request any data logs (I knew the problem ans was testing different solutions). With his latest revision (1 back of the current production Sport Tune) I neglected to request logs... Hell, I forgot to send him the latest update with the newest shift schedule! My fault there. Been pretty busy lately.
Lets get some logs and make sure she's getting full timing/power, then work on gearing.
1. Kdanner is correct, 3.31 or even stock 3.15 gears are a better fit. The ideal situation is to go thru the traps at the top of 3rd gear with a locked converter. Adding another shift physically takes time. Log a WOT run thru the gears and you will see how long each gear change actually takes. Reducing 1 gear change will drop ET's and increase MPH. Same reasoning behind staying in 4th in a manual vs shifting into 5th.
2. I have the spark tables scaled to 1.5 load for use on *other* applications. If the JLT CAI is throwing off the load calcs by even .1 spark can be greatly affected, causing a loss of power. Knock sensors are only allowed to add a little timing as well.
This is why logging post-tune is so important.
Of course, Nick has been 'testing' the new Auto Idle lope tune. Due to the massive amount of revisions I'd sent him I did not request any data logs (I knew the problem ans was testing different solutions). With his latest revision (1 back of the current production Sport Tune) I neglected to request logs... Hell, I forgot to send him the latest update with the newest shift schedule! My fault there. Been pretty busy lately.
Lets get some logs and make sure she's getting full timing/power, then work on gearing.