OK,Civic Coupe 1998,my motor is d16y7,supercharged with a Garret T28,440cc Dsm injectors,Blitz blow-off & intercooler,Eagle rods and pistons,running 1,3 Bar(European measure).
To the question now:
My settings were tuned on a dyno and setup was done according manual all this double checked and all ok.Now what happens is suddenly after 15 second on engine running idle my a/f ratio meter goes from lean to rich every second,and i loose 1200 rpm.For example i hold it on 3000 rpm and when this happens the same time the a/f ratio goes lean to rich and motor goes to 2000rmp(lean) and 3000rpm(rich).Only one thing comes on my mind do i need a resistor box for the injectors?Dsm(3 ohms) original(12ohms),i don't know what the hell is going on,i also replaced the controller(s-afc) but still nothing.
Please help.

 

i think you mean turbocharged

 

agree with above.

but to fix your problem, you need a resistor box for your injectors. the peak and hold 450cc dsm injectors are going berzerk with all the extra voltage you're sending them.

 

Check your O2 sensors wiring.

 

Resistor box yes.

 

Guys just to let you know i solved the problem...It was the return 5volts wire from the sensor map to the ecu!!!
Thanks god it took me 3 weeks,anyway according to a dynojet metering i am running on 320HP!! Yihaaaaaaaaaaaaaaaaaaaaaa!!!!!!!!!