So, as promised for those interested I now have the last leg of my review (Track Day)
Just to give you an understanding of what I have:
Stillen CAI, F.I. CBE, EcuTek Tune, Potenza S-04 tires, Redline 75W90 Diff fluid, Motul Dot 4 brake fluid, stock sport package brakes/LSD (new stock pads and stock rotors), Fresh fluids including Nissan's Ester Oil. NO OIL COOLER.
To start off, my oil temp oil only reached 260 with ambient temps 65-70. I feel like a lot of people who SWEAR you need an oil cooler must have crazy mods that generate a lot of heat or is just a straight track monster. For reference my average time at AutoClub Speedway in Fontana, CA was 2:09 with 4, 20 minute sessions.
Review:
I wish I had a lot more to say about how the CAI, CBE and EcuTek tuned changed my track days forever. A few key things I did notice:
Slightly higher front straight track speed, about 5mph
Can get on the throttle a bit harder out of the apex with the EcuTek traction control mod
With the CBE making a much louder sound, it is a lot easier to rely on listening to your engine instead of watching the tachometer. With a stock exhaust it is very hard to hear your engine through your helmet.
I must be honest though I did not see a staggering difference on the track. Although the CAI, CBE and tune are your basic mods, the real track difference you will see hands down will be from brake and tire upgrades.
I hope this help someone who has a stock Z and trying to figure out what to buy or do first. Also, hopefully it will shed additional light on who REALLY needs an oil cooler and who doesn't.
Like always, just my 2 cents.