That is the reason I am doing this HP and I will re-dyno. I would be happy with anything over 15 HP. 420 rwhp or better, and Id say it was worth the effort.
I bought 'titanium ceramic' instead of the slightly cheaper 'silver ceramic'. Mine is battleship grey.
The 8 x primaries are the coolest thing under the hood. I turn the blower on full bore in 2nd gear, 2 blocks from home, get out,and everything under the hood is hot... except for the 8 x primaries. I can push down on any of em with my fingers, and just warm.
My theory is since they are ceramic coated both inside and outside, that the internal temps of the exhaust gases are hotter. The hotter the internal gases are, the faster they will flow, which I believe is a huge chunk of the effect I'm seeing.
After the LT install, we did a dyno test ( 1st and only dyno test)..and it was a tiny bit lean, so VMP tweaked the tune slightly. I had em tune before..and after the LT install, for 94 octane (no ethanol in our 94 octane). The jba lt's are longer than kooks, and the tq curve is shifted slightly lower..where I want it. After the LT's went in, the tq increase was phenomenal. Now it pulls like a mofo, whether nblower is on..or not. Of course it pulls a lot harder with blower on. It's 'free' hp + tq, and works in NA m ode, or blower mode. The mating jba catted H works good, and new hi-flow cats reside under the front seats. That eliminates a ton of heat vs oem cats at bottom of eng bay. The ceramic coated LT's also eliminate a ton of eng bay heat. It's a huge drop in under hood temps.
Before, my steeda ( black) stb ran hot, not it doesn't.
I also installed a 7 bar upper grille, which eliminated the 2 x 90 deg bends for air entering the 'snorkel' that in turn feeds air into the oem airbox. Now it's straight into the 'snorkel'. Also installed a K+N panel filter into the oem airbox. Also installed the FRPP twin 62mm TB. The whole package comes together finally.
Some other related mods were the eaton tru trac LSD, DSS-DS..and also the whiteline watts link. ...+ a ton of other suspension mods.