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Decipher this log please, MHD Stage 2+
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07-16-2021, 03:36 PM | #1 |
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Decipher this log please, MHD Stage 2+
**07 335i, FBO, MHD Stage 2+, 93Oct, 3rd gear pull, DSC off**
https://datazap.me/u/kazbek1/1st-log...Rub6KoGmSVCbQY Would someone mind deciphering this log for me? I've noticed there's noticeably more lag when I step on it than usual.It was around 95F when I logged this too so the heat may have something to do with it. I was flooring it but the pedal position shows otherwise for some reason. Just doesn't seem to be running at 100%. Also, my DCIs are louder than usual but don't seem to be leaking. Thanks in advance! |
07-16-2021, 06:38 PM | #2 | |
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Wastegates could be worn, do you have wastegate rattle fix applied? |
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07-16-2021, 06:42 PM | #3 |
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Drives: '11 335is | '16 Macan Turbo
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Go full throttle!
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07-17-2021, 07:48 AM | #4 |
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Yep..... according to the log, he stomps the throttle and then starts letting off the gas as the boost comes on. Hard to really tell much from that log.
OP...you need to do a full throttle log from 2,500 rpms in 2nd gear all the way until 6,000rpms and then start letting off the gas. |
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07-17-2021, 07:51 AM | #5 | |
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At what RPM range should I see the turbos hit target boost? |
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07-17-2021, 07:54 AM | #6 | |
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07-17-2021, 07:56 AM | #7 |
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07-17-2021, 08:01 AM | #8 | |
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Turbos should hit boost quickly from about 2.5k to 3k, within about 500 rpm from the time you go on WOT. If manually adjusting still didn't help reduce the rattle, then yes they are probably shot. |
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07-17-2021, 08:04 AM | #9 |
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07-17-2021, 09:09 AM | #10 | |
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I forgot to mention that I did cut off the original intake manifold nipple and tapped a larger 1/4" brass NPT fitting so I could run a 4mm vacuum line from the manifold to the BOV instead of the 3mm. Not sure if that affects lag or not. |
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07-17-2021, 10:18 AM | #11 | |
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If your BOV line was causing problems, i would expect some sort of a boost leak, from your Datalog or doesn't look like you have boost leak. |
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