10-21-2020, 01:15 PM | #46 |
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Pumps are installed, waiting on confirmation of tuning session with Cary. Will update once info is available.
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10-21-2020, 05:03 PM | #47 |
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10-21-2020, 05:04 PM | #48 |
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We'll post pics as soon as everything is wrapped up and finished.
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Tom G. | european auto source (eas)
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10-21-2020, 06:17 PM | #49 | |||
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10-21-2020, 09:02 PM | #50 | |
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I'm fully flex from the same tuner and can run any content; but I have torque targets adjusted for the different ethanol content to ensure there isn't an issue. If you want to make the most power, you're not going to make it on 80% ethanol unless you have additional fueling.
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10-21-2020, 09:28 PM | #51 | ||
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10-22-2020, 01:25 AM | #52 | |||
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11-09-2020, 02:38 PM | #53 |
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Any updates?
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11-09-2020, 02:44 PM | #54 |
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1st car is in the bag, 2nd M4 going on the dyno soon so we can compare figures.
Results when finished.
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11-09-2020, 06:13 PM | #55 | |
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What's the real objective of the Spool HPFPs...can the stock Direct Injection deliver more fuel with Spool pushing? How does the Stock LPFP pressure log look with Spool sucking compared to stock HPFPs? -Jimmy
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11-09-2020, 07:13 PM | #56 |
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I have a question and excuse my ignorance as I'm still learning the ways of BMW M's. Why can a piston be made/fitted to stock HPFP OEM housing like Autotech does for Audi's?
See below. this upgrade gave us the opportunity to run up to E50 on my S4 and sorry if the question was previously answered. If stock system can get E50/55, the piston should easily get E60/70. https://autotech.com/mm5/merchant.mv...de=10-127-101K
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11-10-2020, 03:24 PM | #57 |
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Not enough info gathered to post yet. We'll post once the other M4 is finished tuning.
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Tom G. | european auto source (eas)
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11-20-2020, 07:39 AM | #58 |
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Really looking forward to seeing some real-world results with these pumps. I'm interested to find out if the stock fueling restriction is purely pump related, or if the injectors actually become the bottle neck at some point.
If these HPFP's work as well as I'm hoping, I could potentially see using them over PI when tuning for E85 on aftermarket turbos. |
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11-21-2020, 02:43 AM | #59 | |
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Some coding for the M5 injectors is of course requiered.
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11-21-2020, 07:41 AM | #60 | |
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I'm also thinking that the larger injectors might benefit from an aftermarket HPFP with higher flow capacity... but Since HPFP injector rail PSI is same as OEM the bottleneck is still the injector opening. The flash map might be able to open the big injectors longer, but a limit is eventually reached. Have you seen setups with big injectors plus pumps on your side of the pond?
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11-21-2020, 09:28 AM | #62 | |
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10% over the OEM S55 injector.
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11-21-2020, 10:25 AM | #63 |
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So I'm thinking that the upgraded HPFPs and M5 injectors are for situations where PI is maxed out and you can afford $5-10K for 10% more DI (parts, shop install and tune).
Just having upgraded HPFPs won't make bigger injectors flow more, but bigger injectors might also push stock pumps to their limit too often. The only way to really know the benefit is by incremental changes with good testing and logging.
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11-21-2020, 11:25 AM | #64 |
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can you elaborate on that? Europe has different M5 injectors than the US M5 injectors? What is the difference between Euro5 and 6?
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11-21-2020, 11:37 AM | #65 | |
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11-21-2020, 11:59 AM | #66 | |
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