Injectors And Fuel Pump

[Adam]

51XRT, we'll definently post infromation on the unichip with plug-in harness as soon as we have final product specification and pricing. I hope it is possible to have the product installed and custom tuned for approx $1600 inc. GST. Will also post information regarding unichip plug-in harness and matched multy orifice injectors in the near future.

Peter,

Will this become the new phase 1 with the injectors included or will it be an option? After hearing at the Melb APS info day that the phase 1 is limited to 280kw because of the injectors, will the unichip + injectors make more kw's?

Like you said above Peter info will be released in the near future so I understand perfectly if you can't disclose the info just yet. Thanks.

[aps]

I expect that we may upgrade phase1 with the inclusion of the larger injectors.Around 300 Kw should be practical with the stock exhaust system before the engine runs into valve springs promblems/engine misfire, all be it an intermittant problem depending on how good the valve springs are .Used in conjuction with a low restriction exhaust ,power could be raised to 320 Kw given that the engine is in good shape and well run in.

[CnC]

I know its not an ideal solution, but you can run a rising rate regulator to give you extra 'injector' capacity, then tune the unichip to suit the additional fuel delivery capabilities of the injectors under increased pressure.

I wouldnt recommend doing this without an additional fuel pump however as it will place extra strain on the standard fuel pump. This is the solution I currently have in place and im getting 260+ kw @ wheels.

Thanks,

Kris.

[aps]

Better to go straight to the high volume pump with correctly sized multi orifice injectors,this method will provide the best combustion,engine response ,fuel economy and highest power possible for the combination of mods on the car

[CnC]

Like I said it isnt the best solution, but it is a solution. Considering that your injectors are as rare as hens teeth, there arent many other options now are there?

[aps]

CNC Well I hope to rectify this very soon.Large injectors will be packaged with the unichip and plug in harness this will make it easy to upgrade to 300Kw in a single step at a reasonable price. We have been listening .

[Guest LOK@ChipTorque]

Better to go straight to the high volume pump with correctly sized multi orifice injectors,this method will provide the best combustion,engine response ,fuel economy and highest power possible for the combination of mods on the car

Have to disagree with Peter here though, leaving the standard injectors there should (with less work and less tuning aswell) provide the best combustion, fuel economy and drivability and may JUST provide sufficient fuel if the mods are not too high. It does however apply far more pressure to injector internal mechanism and so requires a higher current to "Crack" open the injector at the start of injection. Over time this may eventually become a problem. It's always one of those hard decisions. A RR reg is the cheapest and easiest way to do what you describe. The hard part is that they are not repeatable in pressure rise over time and so when tuning them, the tuner has often to leave a small fudge factor in case the pressure doesn't rise properly.

Larger injectors is the best overall solution in a staged upgrade plan but then it means more work to recalibrate all of the load settings for the increased injector flow rate.

Now if I could just get Ford to provide the rest of the original programming information I was looking for..................

Lachlan

[CnC]

When supplying the injectors I would prefer to be supplied with injectors that will suit the later stage upgrade levels, rather than enough to support barely 300kw..

Are you going to supply various sizes of injector? What cc rating will these be?

[aps]

LOK 11 Well I am surprised at your comments. The stock injectors are flat out at 280Kw,that is the injector is working at 100% duty cycle, beyond280Kw the best option is definetly a larger multi orifice injector not working above 85% duty cycle,the injector will need to be sized correctly for the intended power level. There is no doubt that this is the best engineering approach its the way an OEM would engineer the fuel system if releasing the xr6t at 300Kw.Of course one has to be able to source the correctly sized injector which APS has and in addition have the technology in order to map the fuel system precisely.This is no problem for the UNICHIP, enough said on this issue for now .

Peter

APS

[F6 RAPID]

We utilise a multi orifice 440 cc injector, this style injector atomises fuel more effeciently, hence better ......

Okay Peter, now I have conflicting information. In the latest Motor magazine when they tested your Phase 2, they quote the injectors being replaced with 360cc units - and the ones pictured in the article are the original injectors??????