I added a Cobb tune, AAM midpipe and Michelin PSS tires to my 2013. I'm running about 18.5psi peek tapering down to about 14.5psi at redline.
I noticed that the stock 4100rpm launch would spin the tires leaving two long black strips behind.
Unless the asphalt was newer and the tires were super hot the car would spin. This is with stock power. After the tune it wasn't any better.
I decided to lower the launch RPM to 3500 and it worked well. Consistent 2.8 seconds to 60 with my Vbox on all surfaces. No wheel spin hence less tire wear. My best 0-60 on the street with a 4100rpm launch with my tune and very little spin was 2.6 seconds. I will gladly accept two tenths slower 0-60 times for reliable launches with much less tire wear and drive-train strain.
Go ahead and try the 3500rpm launch. You'll be happy you did.
Note: This launch control advise is for 2012+ DBA GT-R's. Stock to mildly modified (tune / midpipe) 2009-2011 CBA cars launch poorly even with newer LC software. Too low RPM and they bog. Too high and you get wheel hop / spin. 4100 - 4200 rpm with LC5 on a CBA seems to be the sweet spot but it's hard to get 0-60 times under 3 seconds on the street with just a tune and midpipe.
Below is the V-box graph of my 2.6 second 0-60 run. My mods were a Cobb tune and AAM resonated midpipe. 4100 RPM launch and the car hooked very well.
Here is the V-Box Graph of my 3,500 rpms launch. Cobb AP running an 18.5psi tune and an AAM resonated midpipe. Zero wheel spin and much less drive train shock on the initial launch. The car consistently runs 2.8 second 0-60 times. This is a great street setup that is easy on the tires and car. Note: This is for DBA 2012+ cars only.
ChurchMember Since 18 Apr 2009
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