So having done both the BORLA UEL and a T1R EL setup earlier, one of the community members came up with a HKS EQUAL LENGTH header for a tune.
His current setup :
Takeda Intake
HKS Equal Length Header
Motive Front Pipe
Perrin 2.5 Inch Overpipe and Exhaust
Jumping straight to the results, here are his 3rd & 4th gear pulls respectively, each sampled before and after the tune...
Not bad ~ a few HP shy of the magical 200WHP, but there were a two factors that had contributed to that ~ HEAT and secondly, MAF turbulence caused by the intake. In the many, many FRS / BRZ setups that have come and gone thru my facility, I have noticed that you would be hard pressed to get a better intake than the stock. Granted that it doesn't look bling enough for most, it really does well when it comes down to it,
especially if you're planning to tune it down the road.
That said, I'd like to think that we did a pretty good job here given the minor complications and yielded highly positive results.
So here's what a 100% stock setup vs this HKS setup looks like...
And for those who are undeniably going to ask...what does this look like against the BORLA setup? You decide...

Ref:
http://www.ft86club.com/forums/showthread.php?t=37225
Video to come later tonight for those interested in what an EL setup sounds like with a Perrin exhaust...
Cheers!
Bob @ Drift-Office, LLC