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

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Old 03-08-2006, 03:15 PM
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WTF
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Default 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.
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Old 03-08-2006, 03:20 PM
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Default 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
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Old 03-08-2006, 03:27 PM
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Default Re: installed my chipped p28 and 450s - now car barely runs

did you change injector size in program from 240->450?
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Old 03-08-2006, 03:36 PM
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Default 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.
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Old 03-08-2006, 04:11 PM
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Default 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
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Old 03-08-2006, 06:00 PM
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Default 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
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Old 03-08-2006, 06:34 PM
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Default Re: installed my chipped p28 and 450s - now car barely runs

do you get a constiant check engine when the jumper is done
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Old 03-08-2006, 08:54 PM
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Default Re: installed my chipped p28 and 450s - now car barely runs

i dont get any check engine light, i havent done the jumper tho
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Old 03-08-2006, 09:21 PM
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Default Re: installed my chipped p28 and 450s - now car barely runs

no check engine light ecu/eprom are good
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Old 03-08-2006, 09:31 PM
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Default Re: installed my chipped p28 and 450s - now car barely runs

Originally Posted by chris
no check engine light ecu/eprom are good
Working..yes, doesnt mean the map on the chip is any good. Dont run the motor and wash out your cylinder walls.
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