I recently swaped a sohc vtec motor into my civic hatch before i put it in i built it (12.1:1 cr &shot peened rods)(list below) and now that its broken in i am happy about the results but feel it has alot more potential. I have never tuned a car before and i know it is a delicate process but i don't really know of ways of tuneing it myself without the use of a dyno (closest one is almost 3 hours away).


I have an air/fuel guage along with a fpr (fuel pressure regulator) and i know there not that accurate but i seem to have my car running ok as far as that goes. When im full throttle im most in the green (rich) and one or 2 LED's in stoich which i guess thats about where i need to be.

On the ignition side of things i am at stock timeing and will be playing with it a little after i have some info on what type of fuel to run.

here's my setup:

rebuilt d16z6 (sohc vtec) longblock
d16a1 pistons (12.1:1 cr)
arp connecting rod bolts
felpro gasket kit
d16a6 intake manifold
d16z6 fuel rail
d16y8 head gasket
adj fuel pressure regulator
full obd1 conversion
p28 ecu
JG throttle body
AEM cold air intake
airmass hedder
2.25 custom bent exhaust
revolution muffler
M&R short throw shifter
energy suspension shifter bushing kit
underdrive pully
centerforce dual friction clutch
si trans (soon to swap zc trans w/intermediate shaft)

iI don't have a clue on octane that i should be running i guess maybe around 110 if i advanced my timeing? How far can i go and what else can i do besides get an AFC to make it run a little better i know i can get it running better than its running now (mid to low 15's) without doing much i just need some direction i guess. ha

Any advice would be appreciated.
Thanks -Larry

 

find another O2 bung for wideband...and hit the dyno!

 

You need a better way to tune (I recommend hondata or EMS) however chipping your ecu and vafc should work ok for it. Goodluck.

 

U need to get a Hondata setup. The ignition timing tuning is what will make or break high compression motors. factory Honda ignition timing maps are optimized for stock motors and cams.

If, under load, you hear a what sounds like a heatsheild rattling, its not the heatsheild, it DETONATION. thats BAD!

 

thats an all motor "monster". hmmm not quite my idea...but u really need to dyno tune it. and drop your factory exhaust. and no theres no way in hell you need 110 octane, lol. i have no clue where you got that idea from, but youll be 300% safe on 93 oct.

 

i dont have stock exhaust i have custom bent 2.25" to a revolution muffler and you think 12.1 to 1 compression is ok with 93? i dont really think so. How much $$ am i looking at for a hondata setup?

 

wat octane gas are u running in it right now?

 

94 octain but i think i should be running higher

 

Nah, 94 should be plenty ok with 12:1. You need good tuning. Make sure you stay on the rich side and you will be okay.

 

i run 12.3:1 on 93 octane tuned with hondata on an lsvtec in a del sol..

get hondata.. it's the only way

 

how much is a obd1 hondata setup? what options do i need when i get it>?

 

when a z6 is a monster ill put mine back in my civic

jk
damn nice setup

 

thanks bump

 

bump

 

bump