Hey does anyone know specifically, what honda did to get the HP from the 109 in gen 1, to now 117,
its the same motor and everything, i imagine they did some computer tweaks..


edit: oh nevermind, i see they added the i-vtec phasing, which also gave it the ability to get the ULEV-2 rating, over the 1st generation's LEV...

...im not jelous,... shut up

 

Variable valve timing and lift electronic control. It uses two camshaft profiles and selects between the profiles. Lift is only adjusted on the intake valves of the fit because of the single over head cam

i-VTEC is nice because it provides a more usable power band, but the power increase is from the VTEC (high profile) the "i" provides ignition advance for less of an "on/off" VTEC. In my prelude SH it sucks till 5400rpm then takes off to 200hp at 7200rpm. In my Fit it is smooth and feels more natural.

More to the point the 07-08 doesn't really have VTEC. it just used the moniker

"On the road, the Fit's 1.5L SOHC 16-valve 4-cylinder (117hp@6600 rpm, 106lb-ft@4800 rpm, codename L15A7) has been fortified with "real" VTEC, meaning it actually has dual discrete lift profiles that the intake valves follow, and the difference over last year's "mild" VTEC motor (which switched between 3- and 4-valve operation) is immediately noticeable. On paper the differences don't sound like a lot (+8 hp, +1 lb-ft) but the new version of the engine makes noticeably more torque everywhere below 4000 rpms and above about 5500 rpms, and the difference can easily be felt."

- Temple of VTEC