Getting More Power From the 4G63 With Link Engine Managment

We installed DeatschWerks 1500cc high impedance injectors.  We had to disconnect and bypass the OEM injector resistor box which was pretty simple.  We need a bigger injector capacity for running E85. We covered these injectors in detail in our previous article.

With our intake manifold in place, it was time to start reconnecting our vacuum hoses and wiring harness.

Our charge pipe would not fit due to the lower position of the throttle body on the Hypertune intake manifold plenum.  We had Brian Kono of Afterhours Automotive redo our charge pipe to fit.  The Hypertune intake is not an easy bolt-in for an LHD car and requires a bit of minor fabrication to get it to work.

The new Afterhours Automotive modified charge pipe fits great and also has provisions for the Link intake air temp sensor.

Since we will be running E85, the high ethanol content of the fuel requires us to use a more fuel resistant hose.  Our fuel system was replumbed with Earls -6 Ultra Pro hose which is lined with inert PTFE. This material is essentially Teflon which is a registered tradename. Ultra Pro hose is impervious to all known fuels and oils. It is also super flexible, which will make it easy to maneuver through our engine bay. We chose the Ultra Pro hose with a black polyester outer cover.  This is their lightest hose – up to 67% lighter than their traditional steel braided hose .  Ultra Pro’s outer cover can also be had in traditional braided steel or black nylon monofilament.

There’s a full line of hose ends, adapters and accessories avaiable from Earl’s . They really are a one-stop shop for all your plumbing needs. They usually also have all their offerings available in different finishes so you can customize the look of your project.


  1. Ha ha. An Crydom S.S.R (solid state relay) We use those to turn the heaters on and off on blow molding and injection molding industry.

  2. I designed billet MIVEC housings for the EVO X, it doesn’t surprise me at all that it gets stuck, the whole system works with small springs, edge seals and tiny tolerances balanced with oil pressure. The slightest trace of gunk or grit anywhere will stop it.

    The stock casting cracks when you put a bigger turbo in. We fixed the problem in our EVO 9, we removed it and put indexable cam gears instead.

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