07-19-2018, 12:11 PM | #89 | |
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But as said before, MPPSK will have a power boost as well after a reflash. |
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07-19-2018, 12:42 PM | #90 |
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Gotta give Mission Performance a thumbs-up for hanging in (and answering) all these questions so far
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07-19-2018, 12:48 PM | #91 |
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Thanks for the answers!
Target 17 psi with the jb4 now on 102 ron, car is fast but inconsistent, hope a flash Will be as fast (or faster) but atleast be more consistent |
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07-19-2018, 12:53 PM | #92 |
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Completely agree!! They have been top notch!
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07-19-2018, 01:20 PM | #94 |
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This is what I want to know and if it’s safe to run some E85 with leaning the AFR or maxing the crap out of the fuel system.
Last edited by B58; 07-19-2018 at 02:28 PM.. Reason: Spelling error |
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07-19-2018, 03:58 PM | #96 |
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The fuel pump is still a limiting factor but the fuel cut off happens at a lower WHP than does the fuel pump. When mission performance answered my question, not wanting to put words in his mouth but he alluded to with a stage 2 turbo fuel pump would probably definitely be an issue where as with stage 1 turbo I might be fine, I'd love to get new injectors either way but at least the tune gives us more room to mod until reaching new fuel pump levels. Someone correct me if I'm wrong but that's what I'm getting out of this.
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07-19-2018, 06:18 PM | #97 |
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Interested in group buy once we get some more info
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07-19-2018, 10:03 PM | #98 |
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Dyno numbers from another B58 tuner and an explanation of the fueling limits.
https://www.performance-centre.co.uk...g-by-custompro 🤯 [IMG]https://cdn.shopify.com/s/files/1/14...g?v=1532006460[/IMG] |
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07-19-2018, 11:03 PM | #99 |
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Fueling cap was for sure an issue with N55 and B58 a while ago. Now, after a lot of street tuning, we were able to run 5 gallons of e85 with our stage 1 flash on an otherwise fully stock B58 and fuel pressures stayed within range entire time, even though the engine was heat soaked after just few pulls. Big issues with the B58 right now that remain are: a) transmission torque intervention b) charge air cooling.
I'll post a lib lot datalog collected today, and even at full boost to redline, you can see that fuel pressure stayed exactly where it needs to be. |
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07-20-2018, 01:56 AM | #102 |
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07-20-2018, 06:42 AM | #103 | |||
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As others have noted, though, some cars are making 370 whp on MPPSK, so a bump to 380 WHP is not really worth $1000 in my mind. :/ On the other hand, if it bumps from, say, 370 to 400 or 410, that plus the cold start delete could make this worth it in my mind. Quote:
But for clarification: MPPSK isn't any higher-flow than stock catback? I would expect that at least in sport mode, removing the muffler restriction entirely would be an improvement (since sport mode fully opens valves that bypass the muffler entirely... and I believe the ECU opens those valves at high RPM in comfort as well). I did think that the catback piping was larger in MPPSK as well, but I can't recall where I read that. A couple more follow ups as well: #1: How is cold start delete implemented? Just a removal of the 100% wastegate opening, or is it more than that? Honestly, that feature is half of what draws me to this, cold start makes this car sound like ass with MPPSK. #2: Regarding 'burble mode', how does that interact with the MPPSK base tune? MPPSK has TONS of burbles by default. If I opt not to get 'burble mode', do I end up with MPPSK level burbles, or closer to stock? If I opt for 'burble mode', how does that change compared to MPPSK? (Some audio clips/youtube videos would be handy, I suppose). I would honestly like less burbles than current MPPSK, something closer to the MPPSK tune of a year+ ago. Quote:
Last edited by Araemo; 07-20-2018 at 06:51 AM.. |
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07-20-2018, 07:29 AM | #104 |
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You should hear it with the valves permanently open. I'm sure my next door neighbours love me!
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07-20-2018, 07:31 AM | #105 |
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Try full AWE exhaust + midpipe + cattless downpipe in a garage I think this thread will help many neighbors across the world
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07-20-2018, 07:43 AM | #106 | |
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07-20-2018, 08:01 AM | #107 |
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So the transmission will still delay shifts until TCU coding is dialed in, correct?
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07-20-2018, 08:44 AM | #108 | |
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I imagine this is not problematic for 6MT?
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07-20-2018, 08:59 AM | #109 |
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Actually, technically, B58 with 6MT is limited to even lower torque than the auto... though I'm unsure if that is per-gear? All I know is that it is rated at a lower torque # than the automatic transmission B58 in the same chassis.
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07-20-2018, 09:25 AM | #110 | |
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