I just did a minime on a d15b8 (93 cx) with spare parts in my garage.

d16z6 complete head + dizzy
d16y8 manifold
IHE
S20 tranny

I wired vtec and ran it the first time with the stock p05 ECU.. runs great.

I tried 2 p28s and a chipped p72 (stock p28 map) and it runs like crap.... stutters, idles rough until its warm. no CEL though! vtec works like a champ and it runs great at WOT. it doesnt want to run with a vtec ECU... ?

Anybody have any ideas?

 

Which injectors did you use?

 

i think they are d16y8 injectors. possible they are d15b8 injectors... would this cause a problem? I know the d15b8 was running with the y8 manifold the way it is now.

i used your writeup BTW

 

D15B8/D15Z1 injectors are 180cc...you need the 240's from a Z6 or B7...that's most likely your problem

 

once again, you are awesome.

i took off from a light and it started knocking... like a spark knock. i had the impression that it was running lean for some reason. i thought d15b8 / p05 used 240cc injectors.

i just burned an uber chip on my p72 for 180cc injectors and it runs PERFECT. thanks again!

20min after my first post the problem is resolved

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">20min after my first post the problem is resolved </TD></TR></TABLE>

Great news

 

BTW, change them if you plan on doing anything besides a cone intake. 180cc is only good for 125whp completely maxed, and typically sohc vtec does ~100whp stock. Thats probably ~80% duty cycle 2/3 through both maps I'd bet. Mods will increase that, and going past 80% isn't usually a good practice.

Plus 240's are everywhere...I have too many sets as it is.

 

i will be boosting it very soon so i will be swapping the injectors. thanks for the info.