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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > Bootmod3 knocks detected during 3rd gear pulls
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      07-14-2020, 02:47 PM   #1
Malkfleursby
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Bootmod3 knocks detected during 3rd gear pulls

I flashed Bootmod3 stage 2 93 oct a couple days ago and the power gains and responsiveness have felt great. I decided to do some logging and was getting tons of knock detections during city driving. I then did a couple 3rd gear pulls and a 0-100 run and still saw knocks in the logs. I'm a little lost looking at all the data in the logs so was wondering if someone who knows more then me could tell me if there is any huge problem in the logs or if these knocks are okay.

The current mods I'm running are a catless dp, intercooler and chargepipe all from vrsf and I have a n20 engine. I filled up with petro 94 but I still had 6 liters or so of Shell 91 in the tank. Would that be enough 91 to bring the octane level too low to run the 93 tune? I've also installed all mods myself so is there anything in the logs that show a leak or that I installed incorrectly?

0-100 Pull:
https://www.bootmod3.net/log?id=5f0d...90c66591bb7bb5

3rd Gear Pulls:
https://www.bootmod3.net/log?id=5f0d...0b432a4784d6b9
https://www.bootmod3.net/log?id=5f0d...90c66591bb7bb3
https://www.bootmod3.net/log?id=5f0d...90c66591bb7bb2
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      07-15-2020, 12:54 AM   #2
tpoddar
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I would try and run the 91 Octane tune and see if these knocks still persist. Some knocks may be artificial but your best bet is to log the 91 octane tune too and send both logs to PTF
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      07-16-2020, 01:27 AM   #3
Malkfleursby
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Quote:
Originally Posted by tpoddar View Post
I would try and run the 91 Octane tune and see if these knocks still persist. Some knocks may be artificial but your best bet is to log the 91 octane tune too and send both logs to PTF
I switched back to the stock tune and don't see any knocks. So I'm guessing its my gas isn't quite good enough to run the 93. I'll try the 91 and see. I heard husky 94 is good for fighting knocks so I'm gonna try a tank of that as well.
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