I'm finally getting ready to order the MyCalibrator with aggressive+ engine and trans tuning from LMS but wondered about my intake tract since it's not OEM but it's also not a RotoFab or VCM. I ended up getting an '05-'06 GTO intake elbow (no silencer baffles like on the OEM SS intake tube) that matched up perfectly to the factory airbox with K&N filter combo. Now, I know this is a very minor "mod" but I also know that it improved airflow enough over the baffled/silenced OEM intake tube that I got a pronounced seat of pants gain past say 5000 RPM all the way to 6600. To verify this I did before/after runs ona couple of OBDII iphone apps and there was a consistent gain of 1.5-2mph in 1/8 and 1/4 mile runs. So, I want to keep this poor man's CAI set up to run with my LMS tune but I would go back to the OEM crap tube if I have to for peace of mind with the tune since it's a known quantity. Additionally, I had my mid-muffler removed as well but that was purely for sound as it was not a flow restriction. Any input would be appreciated.