OMG you're running the T1-R's with the 400?!?! I had those on my car and i liked them for stock power, but found them pretty sketchy with the Rev300 (REV400 being the intercooled version of the REV300 TVS) ... at least with a factory limited slip diff it was WAY too easy to get the car sideways. I'll continue to use them on the front but not on rear.
TO boxerman, For the kits he doesn't just change the tune, he also adjusts pulley size depending on motor set-up. I think willingness to keep or eliminate the cat's and stock exhaust make for a pretty substantial change to power levels. If you're in california (or a state that only has 91 octane max) you also get a little less power due to loss of octane. I'm in CA and My engine is completely stock with all the way through the crummy stock exhaust with cat... essentially i've got the weakest optioned Rev300 you can get... i dunno what my power is, but it's DAMNED fun. It's more to handle in some ways, but at the same time less stressful because you no longer have to squeeze it to the bitter end of RPM limit to get power out of it.
2006 Aspen White Elise. LSS, LSD, Traction control, LS Toe Link Brace, LS Ohlins DA, Rota 15/16's, BOE surge tanks and Sector 111 Gpan2, Red leather, JL speakers all around with Acapulco MP54, CF dash top, gas shock opening rear deck, multi-vex mirros and replaced rear-view mirror with kit off this forum.