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1995 Landrover Defender 130,4BD1T Compounded HE221 + WH1C,4L85e.
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I am getting closer to finally getting my 1995 defender with a Isuzu 4BD1T compound HE221 and WH1C setup mated to 4L85e ,LT230 conversion running . I am unsure of the best basic way to control my compound setup.
I am thinking that the low psi WH1C turbo would control its wastegate and also feed the spring side of the external waste gate and on the other side of the external wastegate the back pressure via a regulator from the exhaust manifold.
The high psi HE221 turbo would be standard.
The intake maximum boost would be controlled by fuelling?
Any information would be appreciated.
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