idle a litle rough?

[CDeeZ]

Most of you already know that I swapped from the '747 to the 427 PCM recently. Thanks to the help of those who inhabit this forum, I was able to get up and running on the '427 PCM.

Now I made some logs and adjusted VE using dave's spreadsheet and things were starting to look decent, but I have decided to start over on tuning the VEs for the two reasons below.

First, I wanted to see if I could get away with a higher injector flowrate since I have always been pretty rich at idle after the '427 swap. And also, My VE tuning that I had done, I forgot to turn off DFCO and PE when recording BLMs, so I think my data was inevitably skewed.

I raised my injector flowrate (again) from 69 to 74 lbs/hr, and pasted the stock fuel tables back in and proceeded to collect BLM, this time with PE and DFCO OFF. After one run of logging BLMs, my highest BLM was 127 and lowest was 110.

Now after several rounds of using daves VE spreadsheet, this thing runs and pulls STRONG with the engine loaded.

My question for today pertains to idle: At idle, the BLMs are around 110-117. When idling, the engine is a little more choppy than I think it should be, especially given that the cam is just under .5" of lift. Also, on startup sometimes the idle will fluctuate pretty wildly, then settle down. During idle, my transmission seems to make what is known as "neutral rollover rattle" which is totally normal to a manual transmission, but, I wonder if my rich and therefore choppy idle is responsible for making this more noticeable? When I was running the 747 the idle was very smooth and you didn't hear the rollover rattle as much. I think the rough idle caused by the being rich is what is causing this exacerbated rollover rattle.

And BTW to determine if a noise is in fact neutral rollover rattle, you can "float" the noise out by revving up the engine a little bit, and this is my case.

How should I go about cleaning up the idle manners of this thing? Try an even higher injector flowrate? Or slew down then entire VE area responsible for idle?

I'm posting the datalog I made tonight, you can easily see the idle fluctuation I'm talking about at the beginning of the log. Would someone please take a look at this and tell me what they think??