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Old 06-15-2011, 11:02 PM   #41 (permalink)
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They don't have a flow rate available for the injectors anywhere?

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Old 06-15-2011, 11:06 PM   #42 (permalink)
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I've seen a data sheet but wasn't sure if it even applies to my injectors; also, it isn't totally clear what the spray window is (might change depending on several variables).

To put things in perspective, the platform has been available since 06, but people just started breaking 400 horse last year without grenading.
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Old 06-15-2011, 11:39 PM   #43 (permalink)
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Sounds like a slow development curve. What about the Euro spec equipment? Can you get a hold of the rally stuff?
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Old 06-15-2011, 11:52 PM   #44 (permalink)
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The problem with direct injection is that the injectors are all are all different.

Ideally, I'd retrofit a common rail pump from a diesel for higher flow and bolt that up to solve fueling supply issues and take some much needed stress off the cam (fuel pump is cam-driven on the opposite side of where the cam chains up to the crank, inciting torsional stress on the intake side, which also has VVT).

Just went back through old threads where all the research was done and my injectors were made by Mitsubishi Electric. No aftermarket versions are currently available and in order to use a different manufacturer, I'd need to mill the head, make a new fuel rail and hope the driving requirements are the same.
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Old 06-16-2011, 12:18 AM   #45 (permalink)
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Great thread, I'll be following anxiously!
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Old 06-16-2011, 01:08 AM   #46 (permalink)
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I am excited to see you are wanting to go to Texas mile event. I thought about entering this year myself.
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Old 08-24-2011, 02:31 AM   #47 (permalink)
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Sorry for the lack of updates folks; between work and the weather (hot and muggy), I really don't want to tear the entire inside of my car out until it cools off a bit. Thus, I've been working on economy *COUGH*power*COUGH* mods instead.

So here's a couple pictures of my engine bay sans-intake, turbo inlet, battery, battery box, ecu, and intercooler. Oh and the stock K-04 turbocharger, which I affectionately refer to as the "baby snail."
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Old 08-24-2011, 01:15 PM   #48 (permalink)
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Can you make the spread sheet that you posted last page available to the public. I do not know the setup of the fuel system on your car but I would suggest checking the max psi the pump can push and possibly looking into getting an adjustable fuel pressure regulator (FPR). The reason for the FRP is if you are able to increase the pressure in the system the injectors can push more fuel out in the same time window effectively making them larger.

I know that this works for traditional systems because a few guys with pre-obdii supercharged Bonnevilles have used this to add fueling when going to a smaller pulley and adjusted it to the safe zone.
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Old 08-24-2011, 02:03 PM   #49 (permalink)
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The spreadsheet should be viewable to anyone with the link as it is. As for the fuel pump, it is a cam driven direct injection pump capable of pushing 2000 PSI; past that, and the injectors fail to open. Unfortunately, I can really only run up to about 1950 PSI max (after upgrading the pump to its maximum level) due to issues with the relief valve.

Even then, past a certain point I will probably still need new injectors AND a new fuel pump (neither of which exist) to go further.

As a side note, I already run 1750-1775 PSI on the stock pump/injectors.

Edit:
Here's the link again just in case:
https://spreadsheets.google.com/spre...thkey=CLqLjoYL
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Old 08-24-2011, 08:53 PM   #50 (permalink)
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Is there some reason you can't use auxillary conventional injectors?

You should be able to adequately get enough fuel in there with additional injectors in the manifold (or further upstream) using a separate fuel system (since I don't think they'd last long at 1700+ psi). It would only need to operate once you get to high boost levels, but there are aftermarket auxillary injector controllers available that can manage this.

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