i tired to put as many key words in the title so if other have my problem they can find it easily.
well my buddy has a 90 hatch that that he put a y8 in with a y8 obd2 dizzy running a boomslang obd1 convesion harness with a p28. well we get it all together and the thing has a bitch of a time starting, throws a code 4 and wont go above 3000 rpm. figured it had to be wiring, so we rewired everything multiple times, no luck.
finally i switched the ckp+ and cyp+ wires contrary to what all the wiring diagrams say and WAHLAA it works.
so according to this paper

i switched the light blue and the yellow

hope this helps you guys out it took us 3 days and a lot contemplating burning the car to figure this one out

 

ok i have to bring this back from the grave.

i am having some problems myself with getting my engine started.

if you look at your chart and this one from boomslang they both ssay that there are supposed to be 2 blue wires on the obd2 dizz plug. i have an obd2b dizzy here ,as well as the boomslang 0-1 conversion, and the obd2b dizz plug doesnt have 2 blue wires theres only 1

i called rustin and he told me to hookup the blue from the obd2 plug to the orange wire on the obd0 engine harness. I'm all fugged up right now???????????

boomslang conversion charts refer to the one on the bottom left for the dizz
http://www.boomslang.us/obd0_1.pdf

ps im also thinking about burning this ****.

 

this worked . you are the man!!!

 

how come the above diagram is different than this? theres no orange/blue wire listed above? also some other ones are off :/


OBD1
1.Orange
2.White
3.Orange/Blue
4.White/Blue
5.Blue/Green
6.Blue/Yellow
7Yellow/Green
8.Black/Yellow
9.Blue

OBD2
1Dark Blue
2White
3Green
4Red
5Yellow
6Black
7Yellow/Green
8Black/Yellow
9Blue

1CYPP
2CYPG
3TDCP
4TDCG
5CKPP
6CKPG
7ICM
8IGN OUTPUT
9TACH OUTPUT

 

ok.....

 

the diagram above sucks ***. it doesnt explain if those damn colors are for the dist plugs , or if theyre for the engine harness plugs ? or vice versa. i dont have a damn light blue on my engine bay harness . I have it on the dist wires.

 

why is there a green for both obd1 and obd2 ? both of them dont have a green wire

 

wtf

 

the above diagram is whack!