JB4tech.com - International Turbo Tuning Discussion
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mattgc13 mattgc13 is offline
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Car: 2011 335i 6MT // VRSF ******* DP // JB4
Default Overboosting issue - 05-18-2021, 01:30 AM

I keep getting kicked to map 4, doesn't do it all the time but when it does, its almost every time I go WOT. Happens in Map 1 and 5, all that I have tested. Recently purchased a used jb4 on a 2011 335i 6MT. ******* ******** and upgraded chargepipe running Arizona 91 octane. The LastSafety parameter is always 1. Could doing a BEF benefit my situation at all?
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Last edited by mattgc13; 05-18-2021 at 02:17 AM..
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Steve @ BMS/Fuel-It!'s Avatar
Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Default 05-18-2021, 09:06 AM

Check your wastegate....JB4 is not adding any WGDC and your boost is maxed out. Could be hitting the DP coupler or ???



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mattgc13 mattgc13 is offline
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Default 05-18-2021, 03:28 PM

Pardon me I'm pretty new to JB4, how can you tell that JB4 is not adding any WGDC? I will give the DP coupler a look as soon as possible. Should I be playing it safe for now in map 4? I just did a pump BEF today because I also recently installed a new clutch and SMFW so I could raise the idle a bit and delete my DP code, is this safe to do while I'm figuring this issue out or should I revert to stock flash until it's figured out? Thanks
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Default 05-19-2021, 10:00 AM

A stuck wastegate won't matter what map you're on and it will hit max boost.



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