Hondata

sorry, i didn't realize you had an obdI ecu with the obdII plug on it. obdIIa vs obdIIb is the issue you are having... one lacks C the other lacks D. check the pinout for the other and you'll see what i mean :)
hope that gets you going.

your ecu actually has A, B, and D... C is missing :) a few special application ecus came with it. you are in no way the first to make that mistake.

here they cost about $175 from a private seller... but sometimes as low as $85. you will want one from an EX or SI. adapter harness are between $65 and $125. i am leaving town for the next several days, but when i get back this weekend i'll look at what we have in stock... we may be able to offer yo...

for the s300 you should patronize your county's dealer... competition is hard for them, and since they will be your primary support it is best if you purchase the s300 from them. they also have the hondata obdI ecus with the obdII plugs aready installed or they can order them. in fact, i believe the...

what year is the civic that you are taking the harness from? a better idea may to use an obdII harness from a '99-00 civic... these harnesses are one-piece from the ecu to the engine. of course, then you will have to use a conversion harness for the obdI ecu to plug in. but the headache saved in sti...

yes, the s300 is setup for boost. do you have a hondata dealer in italy?

the vss is another important sensor that must be adapted for the ecu to work properly.

notice the author of that how-to on that link is deluded? that's me :)

if you purchase the hondata ecu with the built in obdII plug and an s300, then the only other major things you will need are a lap top and a wide band o2 sensor.

go for it... the community can add it to my tab :)

you should honestly consider purchasing the s300 unit from a local dealer (at least within your time zone) so that they can field your tech questions in a timely fashion. i also believe the hondata dealer agreement forbids US dealers from selling directly to buyers in other countries. ecus we can pr...

A17 is the iab control. cut this wire in the center (half way between the ecu plug and the harness plug) of your adapter harness. connect the ecu side of this wire to one of the relay's COIL terminals. connect the harness side of A17 to the N.O. terminal of the relay. A25 is ignition power. tap into...

if his does not work out, give us a call.

i'll put a detailed post tonight

16 degrees coincides with the center of the stock timing mark, and that is the timing recommended for stock engines.