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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Huge Problem - Need Help!

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      06-20-2021, 12:12 AM   #1
mikeysosa
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Hey guys, I have a pretty huge problem…
So earlier today I got my methanol kit working and everything ran smoothly. Although I wasn't really getting any bigger boost so I pulled over, turned off the car, purged and started the car, thinking that there was just air in the lines. Although, after that the car threw a drivetrain malfunction. Nothing too bad and the car was drivable. Unfortunately I had a very important event I had to attend and had to take the car on an hour drive later that day. After I came back to the car to go back home, the car stalled and sputtered several times, even moving. I also heard a slight ticking sound (really hoping it's not knock) from the engine. Also unfortunately, it's extremely late and I had to be home so I couldn't get much more information other than the codes. Any help would be very, very appreciated. (Also noticed my IAT temp on the JB4 app read "0", methanol would not show up on the graph and couldn't be enabled, and my AFRs were going crazy. Thanks again for any help.
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      06-20-2021, 12:13 AM   #2
mikeysosa
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I also smelled gasoline from the exhaust while the AFRs were ranging from 15 to 0…
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      06-20-2021, 12:24 PM   #3
M235SDCA
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Do you have any logs from the JB4? Are you using map 3 or a different setup?
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      06-20-2021, 12:25 PM   #4
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Quote:
Originally Posted by M235SDCA View Post
Do you have any logs from the JB4? Are you using map 3 or a different setup?
Well I switched back to Map 0 after the malfunction. And I don't have any logs because the car would not run long enough to get a viable log.
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      06-20-2021, 01:08 PM   #5
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Quote:
Originally Posted by mikeysosa View Post
Quote:
Originally Posted by M235SDCA View Post
Do you have any logs from the JB4? Are you using map 3 or a different setup?
Well I switched back to Map 0 after the malfunction. And I don't have any logs because the car would not run long enough to get a viable log.
Quote:
Originally Posted by mikeysosa View Post
Quote:
Originally Posted by M235SDCA View Post
Do you have any logs from the JB4? Are you using map 3 or a different setup?
Well I switched back to Map 0 after the malfunction. And I don't have any logs because the car would not run long enough to get a viable log.
So it works fine on map 0 or the problems are there all the time? If there all the time did you check all the connections to the JB4? I used to run a JB4 with meth and had occasional drivetrain faults. Also it did not work well with BM3 OTS maps. At least it didn't for me.
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      06-20-2021, 03:00 PM   #6
mikeysosa
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Quote:
Originally Posted by M235SDCA View Post
Quote:
Originally Posted by mikeysosa View Post
Quote:
Originally Posted by M235SDCA View Post
Do you have any logs from the JB4? Are you using map 3 or a different setup?
Well I switched back to Map 0 after the malfunction. And I don't have any logs because the car would not run long enough to get a viable log.
Quote:
Originally Posted by mikeysosa View Post
Quote:
Originally Posted by M235SDCA View Post
Do you have any logs from the JB4? Are you using map 3 or a different setup?
Well I switched back to Map 0 after the malfunction. And I don't have any logs because the car would not run long enough to get a viable log.
So it works fine on map 0 or the problems are there all the time? If there all the time did you check all the connections to the JB4? I used to run a JB4 with meth and had occasional drivetrain faults. Also it did not work well with BM3 OTS maps. At least it didn't for me.
Well it sputters and dies anytime I start it no matter what map it's on. The AFR is somewhere around 9 and I'm suspecting a bad MAF, anyone know how to test this?
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      06-20-2021, 05:31 PM   #7
M235SDCA
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You can disconnect the MAF. If the car runs better check for leaks.
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      06-21-2021, 11:57 AM   #8
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What kind of controller are you using for the meth? Hopefully a bms fsb. Are you running a solenoid? If not, you definitely want to. Also, check all your jb4/meth connections again, sounds like you hooked something up wrong. Without a solenoid, your meth could be "leaking" while the car isn't running, which will cause all kinds of issues when the car is started, essentially flooding the system with meth.
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