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420A Fuel Injectors

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I think the fuel trims would take care of any difference between the two injectors while the ECU is in closed loop. Your car may run a little rich in open loop.
 
Well I have 310cc injectors in mine that were already installed when I bought the car. Car runs and pulls perfectly fine it does run rich but no the ECU will not freak out. Can anyone tell me if I am losing power by running these in a 420a that is non turbo and do you think I will notice a differnence by putting the stock ones in?
 
310/240 = 1.29 which means you're dumping about 30% more fuel in when you're out of open loop mode. Factory cals are typically rich as is, and you can gain power by leaning them out, so unless you've done something to increase your airflow by 30%, then yeah, you're pissing fuel in there dude.
 
so if u put 240 cc ill be ok right because my injectors right now are crappin out making my car run leaner and im boosted so im freaking out LOL

I'd either replace them with good stock injectors or properly upgrade your fuel system with larger injectors and an S-FMU, or larger injectors, a 1:1 AFPR and Megasquirt. Using a band-aid fix will only exacerbate the problem.
 
well im ganna be running portfuler so i guess i do need stock ones back on... so does anyone know any places where i get buy some injectors. so far i only found one place Hahn racecraft but the smallest ones they sell if 200cc
 
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