installed my chipped p28 and 450s - now car barely runs
 

put my chipped ecu in with my boomslang harness, put my 450s in, crossed my fingers and started it up, it sounds like it wants to start but doesnt, it just kinda chugs and quits or doesnt even fire..

where should i start? im gona go out with a multimeter and check the injectors and resistors. anyhelp would be great. note to self: dont turbo a car without a spare car.

Re: installed my chipped p28 and 450s - now car barely runs
 

resistance at all injectors was 2.2-2.5
resistance at the injector plugs was al about 71

Re: installed my chipped p28 and 450s - now car barely runs
 

did you change injector size in program from 240->450?

Re: installed my chipped p28 and 450s - now car barely runs
 

how do i do that? do i need a chip burner? dammit. dude i got it from said it should run my car with my set up untill i can get it tuned. i have a data logging cable and a laptop, and uberdata 1.6 and 1.7 but i havent used em yet.

Re: installed my chipped p28 and 450s - now car barely runs
 

well yeah you have to have a burner. just have the guy that you got it from reburn an change injector sizing to 450 CC

Re: installed my chipped p28 and 450s - now car barely runs
 

if the injectors seem fine than you'd have to check the ecu/chip but too bad you don't have a chip burner :P

Re: installed my chipped p28 and 450s - now car barely runs
 

do you get a constiant check engine when the jumper is done

Re: installed my chipped p28 and 450s - now car barely runs
 

i dont get any check engine light, i havent done the jumper tho

Re: installed my chipped p28 and 450s - now car barely runs
 

no check engine light ecu/eprom are good

Re: installed my chipped p28 and 450s - now car barely runs
 

Working..yes, doesnt mean the map on the chip is any good. Dont run the motor and wash out your cylinder walls. :l