D14Z2 (99-2000) 90HP D14Z1, 75 37820-P3X-G11 (OBD2) D14Z2, 90 37820-PHX-G11 MT (OBD2) D14Z2, 90 37820-PHX-G92 AT True OBD2B (B!) 4 separated Injectors, PGMFI, 20MHZ Osc Main CPU OKI M66589-883 (AT) full name OKI MSM66589 / 66P589 / 66Q589 PDF name ApNote -> E2E1031-27-Y4 16-bit CPU 128 Kb ROM 64 Kb ...

i think if u wanna high RPM u need VTEC head (d16z6 D16y8) and aftermarket camshaft;
if u wanna low Rpm for High Torque u need nonvtec (vtec-e) head with d16w3 or some camshaft;

+16 hp not bad) what next step?

camshaft d14a3=d14a4=d14z1=d14z2
but <> d14a8

in 5100 need VTEC
why so diffence? why D14 0-5000 more powerfull?

of course) u Could up AFR in range 300-1500 RPM with <45-50 KPA (500mbar) to UP 15.5 15.9 see some table for example, http://www.ej9.ru/image/afr/afr-honda-graphics.jpg *red line - torque *blue line - economic *left part more rich afr (low afr 10-13) *right part lean afr (15-17) http://www.ej9.ru/im...

some comparsion with dodo old firmware (only first fuel- and inginition map)

i continue my post by P1J (37820-P1J-E11) chip OKI M66207-368 today i could read stock d14a2 firmware (90hp 1.4 Mechanical) and read it in Crome. now i have Base for my D14,P28. some spec rev:7239 rpm idle:750 novtec )) no knock sensor no atmospheric presure sensor no injector test circuit Oxygen se...

oh
i dont see post by BETEK

...but u could use stroke and crankshaft from D15. but u need some work with Cylinder of Block.
Block D14=Block D15....

1. u increase volume engine 1396cc -> 1493
2. u could find more intresting thing for d15, and forged rod too

gerzik wrote:nice. but i`ll put d16y7 camshaft into d14a8.

do you feel some change?