eg_21

I found a greddy piggy back yesterday wired in my car while i was testing a new ecu i bought, i unplugged it and test drove the car and it idles funny and is giving me code 3 and 13 map sensor and iacv, why is this?? while the car is plugged with the piggy back it runs fine but once i unplug it i get cel and idle won't go down 1100 rpm even with throttle screw closed all the way.

what do you guys think?? my car feels like is loosing some power at 3rd gear is a d16z6 with intake and exhaust but do you think the piggy back has anything to do with it?? should i leave it there or take it out and try to fix the map and iacv, the weird part is that i don't get no cel or funny idle when piggy back is plugged.

i just wanna hear opinions is not really a problem what should i do??

90blackcrx

Because the map and iacv were wired into the greddy box, possible ?

TheShodan

iTrader: (14)

you can't just wire any "blue box" into the car unless it was preprogrammed for the injectors that came in the kit. the box doesn't work with stock injectors.

eg_21

like i said i found it when i was changing my ecu and once i unplugged it is running like **** so i plugged it back on, but i feel a lack of power in 3rd gear can this be possibly cuz of the piggy back?? and injectors maybe ls injectors who knows.

TheShodan

iTrader: (14)

What I'm saying is YES............. The piggy back is causing a problem as well as the ECU because it is PREPROGRAMMED for a certain injector size, for a particular turbocharger size that measures CFM of volume of air. Also it could be possibly your ecu itself. "FINDING" equipment expecting it to change anything is not going to help you.

Please don't repeat the same question a 3rd time