d15b1 vs. d15b2
#4
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Re: d15b1 vs. d15b2 (importfan85)
both are dpfi, b2 has more hp, difference that i know for sure are the restrictor plate under the t/b on the b1 and the b1 had a weaker cam. not sure if the ecm had a different program.
#6
Re: d15b1 vs. d15b2 (importfan85)
From what I know, the differences are the cam, ecu, restrictor plate. There is also a restrictor plate inside the litte box that sits on top of the throttle body.
#7
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Re: d15b1 vs. d15b2 (importfan85)
NON 88 d15b1 and all d15b2 = 9.2:1 c/r
slight difference in cam
header
intake manifold
d15b1 has a restrictorplate in the tb only allowing for 1/3 air flow of the tbody. removing it may make the motor lean out. im not sure about this... you only have 2 injectors
88 d15b1 had 9.6:1 c/r stock. same im and header as the other d15b1's w/ the restrictor plate.
slight difference in cam
header
intake manifold
d15b1 has a restrictorplate in the tb only allowing for 1/3 air flow of the tbody. removing it may make the motor lean out. im not sure about this... you only have 2 injectors
88 d15b1 had 9.6:1 c/r stock. same im and header as the other d15b1's w/ the restrictor plate.
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