hi there, i have a d15b vtec engine on my 89CRX, i bought it from a guy that swapped the original 1.6i sohc engin with the d15bvtec, but i guess he didnt make the whole swap, so i still have the old ecu, my recent ecu has just two cables i think its called OBD1 or OBD0 i'm not that sure, i cant find any ecu the same as mine but vtec i guess its PW0, my mechanics said maybe there's a way to work that vtec with my recent ecu, is that true?! and how?! plz help me cuz i dont live in middle east and u cant find any of honda performance part, plz i want details for how to do it if its possible, a pictures will be usefull too

thanks

 

yea you either get a tach with a shift light and hook the vtec wire too the tach light....or you get a msd rpm switch activator and hook it up too that....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slow_import &raquo;</TD></TR><TR><TD CLASS="quote">yea you either get a tach with a shift light and hook the vtec wire too the tach light..</TD></TR></TABLE>

no then youd be shifting while it kicks in. that wont do... rpm switch will do. the first thing you need to do is know what ecu you have. the rpm switch works but not very well because fuel curve is not change when its activated.

i would buy an obd1 computer (p28) and a obd0 to obd1 conversions harness from rywire. then youd be set

 

ok thanks, but i told u i cant find any vtec ecu, how can i know its a vtec ecu? my ecu is for 1.6 16 valve sohc engin, manual tranny, so there's no way to work that vtec in my d15b on a non-vtec ecu! ppl said i can make a manual vtec botton inside the interior! plz i want my vtec, i had very good plans for my car, i already bought 4-2-1 chrom headers, and a cold air intake, and short shifter, and performance chip!
performance sparkplugs wires, and performance ground wires (should i get these or they wont make any difference)?

 

if you stay obd0, the only vtec ecu's are pwo or pr3....but if you convert you car too obd1 i'd recommend a p28 ecu...the only bad thing about the pwo or pr3 ecu's are they are for a b16....and if you miss gear, it can be dangerous for your motor....but either one would work fine...they both cost the same....

 

just to be on the safe side, I would go over everything, make sure and determine what you have if its OBD-0 or OBD-1? But from reading your post your ECU plugs are two, which means your still at OBD-0.

A good Vtec controler would be nice or just like the previous posters mentioned will work too....

 

thanks man for ur reply, i can easily find a vtec controler, does it work with my obd0 non-vtec ecu, where will i connect it so my vtec will work!

 

to what should i connect the vtec controler, i guess the apexi is a bit expensive but i found one with the brand SWOOSH in market and its the only one!

 

and oh, if the vtec works, will it give me more rev limit or the standard 6800rpms?!

 

well you can go with just about any Vtec controler, all it does is just sets it when to kick in. But if you want to have a nice tuning functionality, I would go with the VFac, it also controls fuel and air ratio. A Spoon Vtec controler is nice too. Many Vtec controler have diffrent options you can set them up to, If you are unseure have a shop connect it for you and have them tune it, after that you can mess around with it....(in a controled enviorment ofcource.


I dont think the OBD-0 ECU (stock one you have) will NOT WORK, since its not programmed correctly (you can either get a OBD-O or OBD-1 Ecu that has the fuel curve/fuel maps, Vtec etc programmed. Or you can have that one chipped re-programmed to run all that stuff.

 

what does rpm switch does?! and how can i connect the vtec to the tach meter, and u said my non-vtec ecu will work right, cuz its so hard to get any harness in my country or an p28 ecu, so i just have the otion of my stock ecu and anything else i can do my self!

 

Dude. Get a p28 manual tranny ecu OR a P08 manual tranny ecu and a obd0 to obd1 conversion harness. Run the wires to the vtec solenoid. Problem solved. You can find the ecu in the classifieds or on ebay. Hmotorsonline.com probably has the p08 ecu too. Just keep it simple for now.

You could also get a p06 and convert it to vtec and chip it but that's more work that seems like it might be out of your league.

p28 = Civic SI/EX ecu
p08 is the ecu that is actually made for that motor.

 

man, i told u these stuff not available here in my country(jordan) and everything else u talked about too, thats why i'm still asking about working it on my stock ecu! will the ctec controler thing work?!

 

So find someone to ship you the stuff.