P30 VS P30

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Well my buddy wants to swap me my jdm p30 for a usdm p30 out of a dohc delsol. I know that the usdm one doesnt have the fuel cut off. What are some of the pro's and con's of this trade? what are all the differences in the ecu's? let me know thanks.......

oh ya I'm running a sir-II obd-1
 
The JDM one is speed limited, but may have fuel maps that better optimize it's motors slightly higher compression. Other than that, none really.
 
thats what I figured... do you think it will make alot of difference if i use the usdm and boost the motor with a vafc hack. Will the maps play that big of a factor?
 
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