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Q50_lyfe Q50_lyfe is offline
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Default JB4 Newbie needs help with logs - 05-17-2022, 05:02 PM

Hey all,
I just bought a used JB4 for my 2016 RS AWD and with the first few pulls...I love this thing! What I need is help figuring out how to read my logs and most importantly I want to be sure nothing stands out that is bad that could cause issues with my car. I have NO idea what I'm looking at when it comes to the logs so can someone please let me know if things look normal or not and any advice so I can know what to look for and what is normal for this platform. Thanks in advance.

Mods: Megan DP's, Stillen CBE, BMS inlets, AFE dry filters, and HKS BOV's.

BTW, I'm not using the fuel wires and do not plan to at this time and I have attached 2 logs. I'm pretty sure I was on Map 2
Attached Files
File Type: csv P50_M0_R5_220516_1804.csv (47.5 KB, 22 views)
File Type: csv P50_M8_R4_220517_1009.csv (21.6 KB, 16 views)

Last edited by Q50_lyfe; 05-17-2022 at 05:12 PM..
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JCB JCB is offline
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Default 05-18-2022, 05:28 AM

Dude, are you messing with us? Logs are bizzarre...Map8 pulls, Map 0 Pulls. ECUpsi red sport numbers mixed with non RS numbers. I see some map 2 full throttle, but ECU psi indicates its from a non RS.
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Q50_lyfe Q50_lyfe is offline
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Default 05-18-2022, 10:06 AM

I'll take another reading and I'm not messing with you as I'm trying to get this figured out. I'll do a 4th gear pull in Map 1 today and make sure its checked that it is a Red sport in user settings and repost.


2016 Q50 Red Sport AWD - Stillen CBE; Megan Lower DP's; HKS BOV's; BMS Inlets; AFE Dry Filters; Mishimoto OCC, Tanabe NF210 springs, Michelin Pilot Sport 4S - 265/35/19
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JCB JCB is offline
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Default 05-18-2022, 01:47 PM

I was just joking, but the logs were indeed bizarre. Post a fresh one. Don't switch maps...just a good pull or 2 so it can be reviewed. Map 1 is where you should start with a Red Sport. Depending on fuel quality, some can go up from there, others have to pull back using a more conservative custom Map 6.
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Q50_lyfe Q50_lyfe is offline
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Default 05-19-2022, 09:08 AM

Here is my latest csv file from a 4th gear pull. Hopefully this makes sense as I stayed in Map 1 and I have toggled this is a RS in the user settings.
Attached Files
File Type: csv P50_M1_R6_220518_2339.csv (44.8 KB, 20 views)


2016 Q50 Red Sport AWD - Stillen CBE; Megan Lower DP's; HKS BOV's; BMS Inlets; AFE Dry Filters; Mishimoto OCC, Tanabe NF210 springs, Michelin Pilot Sport 4S - 265/35/19
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JCB JCB is offline
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Default 05-19-2022, 09:24 AM

Sorry to say, but your timing values look horrible and indicate your car is experiencing pre-detonation (knock). This is very bad for the engine so don't do any more pulls until you get it figured out. What fuel are you using? Switch JB4 to Map 0 until we find some answers.
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Q50_lyfe Q50_lyfe is offline
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Default 05-19-2022, 10:20 AM

Thank you! I've been using 91 octane religiously (All they have here in WA) but I'm getting close to needing a fill up. Should I try an octane booster (VP Madditive) with a 91 fuel or is that bad for these cars? Im just wanting to learn as much as possible about this platform and maintain reliability.


2016 Q50 Red Sport AWD - Stillen CBE; Megan Lower DP's; HKS BOV's; BMS Inlets; AFE Dry Filters; Mishimoto OCC, Tanabe NF210 springs, Michelin Pilot Sport 4S - 265/35/19
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JCB JCB is offline
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Default 05-19-2022, 11:16 AM

It is better to raise octane using E-30 or E85 mixed into regular pump gas. I am not sure about the effectiveness of octane boosters out of a bottle. Also I know some additives can damage the fuel system...you would have to research this as I don't know the specifics.

Unfortunately you are going to be limited with just 91 Octane in utilizing your JB4 to make additional power.
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Q50_lyfe Q50_lyfe is offline
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Default 06-01-2022, 03:13 PM

Here's a MAP 0 pull with nothing but 92 pump gas. Hopefully this looks much better than what I posted before. Apologies for the late submission as I didn't drive the car much due to weather and a crazy work schedule. Please let me know if anything looks like it did before (knock/detonation) as I want to protect my car/engine. Thanks
Attached Files
File Type: csv P50_M0_R3_220531_1335.csv (17.9 KB, 14 views)


2016 Q50 Red Sport AWD - Stillen CBE; Megan Lower DP's; HKS BOV's; BMS Inlets; AFE Dry Filters; Mishimoto OCC, Tanabe NF210 springs, Michelin Pilot Sport 4S - 265/35/19
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