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06-28-2018, 08:46 AM | #1 |
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Very weird issue with throttle - N55 & JB4 (logs inside)
I've been having some sporadic issues with boost for some time and finally was able to capture it in a log with the JB4. Symptom is when you're on the gas at a steady state somewhere between 40%-95% throttle, the boost seems to tank and the power dumps down. Full throttle is fine, less throttle is also fine.
This log has me really scratching my head because it shows a massive dip in pedal input, even though I was 100% steady with it depressed around 60% pulling away from a light. Everything else seems all over the place as well. Anyone have any thoughts on this?? I've also attached the excel doc if anyone wants to dig in further. jb41 by Matt Steele, on Flickr
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"Tobias" 2013 135i ///M-Sport 6MT • Pure Stage 1 • XDI 35 HPFP • 404whp/440wtq |
06-29-2018, 02:32 PM | #2 |
Loves me some MHD!
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what do the n54 tech lads have to say?
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1and1
135i - E82.N54 2009 BSM - MHD / xHP / DCI, PR CP & 7.5" Race IC / N55 mid & Borla . . WL RSFI, Koni, Eibach & Dinan CP's, M3 CA's / EBC Red's & Firehawk 500's X1 - E84.N20 2013 MGM - JB4 - The Wife's, now with new turbo & ewg |
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07-01-2018, 12:36 PM | #3 |
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Haven't posted there yet didn't have much info, got some more details now though so about to go there
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"Tobias" 2013 135i ///M-Sport 6MT • Pure Stage 1 • XDI 35 HPFP • 404whp/440wtq |
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boost, drop, issue, jb4, leak, log, n55, pedal, problem, throttle |
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