Posted 27 February 2017 - 10:12 AM
If you're already at 465 rwhp, I wouldn't be looking for much more on the stock internals. That is pushing it pretty hard. I'm at 510 rwhp right now but can do much more with the forged aluminator I'm running.
Jeff speaks from experience here (His aluminator replaced a blown engine.).
The conventional wisdom was that the 3V 4.6L was good to about 600+/- crank HP. Also note that the HP changes with altitude, so if you set it for 600 at 6000' changes are good it's good for about 700 at sea level and there can be a consequence of that Bottom line is that high altitude home base tunes will tend to be a little conservative.
But what I hear the OP asking for is more HP at the low end, and the truth is that the Paxton/Nuvi centrifugal design is essentially a higher RPM blower. If you want more HP at the bottom then the safest way is to replace it with a Whipple/Kenne Bell.
Motto: You can have fun going fast. ... but ... You don't have to go fast to have fun.
2006 Ford GT Heritage Edition, 650 RWHP, 600 FtLb torque.
CSX4005LA - Shelby Continuation Series Cobra. The most fun you can legally have, sitting in a chair, in public.
CSM08SGT2228 - Barrett Jackson Special Edition Convertible, 5-speed, Kenne Bell S/C. Carroll Shelby Children's Foundation Gift at Barrett-Jackson 2009 Scottsdale
CSM08SGT2247 - Barrett Jackson Special Edition Convertible, Automatic. Kenne Bell S/C installed. WHOOT!
Simple Mods: Electrochromic mirror with compass/temp/HomeLink, Ford HD Radio with iPod, lower billet grill insert, sequential tail lights.