Hey guys, whats the exact difference in the F23 ULEV vs the F23 LEV, aside from the emmisions.....lmk, thanks

 

2hp
f*ckin honda had to steal my 2hp :madfawk:

 

since on topic whats different between the f23A# engines. My manual states codes f23A1, A2, A3, A4, A5 or something along those lines. I know there were a bunch f23A's with a number behind them.

 

ULEV models have a more restrictive exhaust manifold, this manifold stay hotter and burns more fuel simaliar to a precat.

Swapping to a standard LEV manifold will return you to a full 150hp. Or just add a header and you are back on even par.

F23A1 -- standard Vtec sohc (EX/LX)
F23A4 -- ULEV Vtec
F23A5 -- non -Vtec 135hp DX sedan engine (some VP models too)

 

Cool, good info man, thanks. Also just out of pure curiousity....I got basicly all the bolt-ons for my accord. (AEM CAI, Greedy EVO, Dc headers, AEM pulleys) How much do u think my realistic HP is now with a F23A4 ?? I know its not gonna be a phenomenal increase, but ive just been wondering.... LMK

 

they jacked my 2 hp too. plus i hate how ulev is written big on the engine

 

yea!!! i'm glad i got the A1...let's hear it for all the 99 coupes out there like mine w/ the extra 2HP!!! like it makes a difference....

 

but if i add lots of stickers and a loud muffler thats like 50hp right there. =p j\k

 

if you buy a DOHC sticker and stick it on your engine you'll get an extra 60HP ahhhaha

 

Dish out the $50 or so and strap it down to a DYNO!!!!!!!!!!