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BMW 3-Series (E90 E92) Forum
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Aem meth install question
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02-12-2020, 12:21 PM | #23 |
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The left knob is what percentage of the map sensor signal voltage (0v-5v) to start spraying at. The right knob is what percentage of the map sensor signal voltage to reach full flow. It is progressive between these two values.
So at 0% it will spray even if map is 0v (vacuum). For 2.5bar tmap set start to 60% (3v) which should be around 9psi and full to 80% (4v) which should be around 17psi. For 3.5bar tmap set start to 45% (2.25v) which should be around 9psi and full to 60% (3v) which should be around 17psi.
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Current: 2011 BMW 335xi | Wedge Tuned | Meth | VRSF DP | VRSF 5" Intercooler | VRSF Chargepipe | BMS Intake | xHP Stg 3
Totaled:2014 Audi A4 CTS K04 APR Tuned |
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02-12-2020, 01:34 PM | #25 |
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At this point I am not sure either. I have only used this setting for OTS stage 2+ which targets 18psi and my current wedge tune which is also targeting around 18psi. The meth has started sparying 9-10 psi in both cases with the controller set to 60%. I have not tried 60% on stock map. You may possibly have to lower the start to 40% for it to trigger around 4-5psi.
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Current: 2011 BMW 335xi | Wedge Tuned | Meth | VRSF DP | VRSF 5" Intercooler | VRSF Chargepipe | BMS Intake | xHP Stg 3
Totaled:2014 Audi A4 CTS K04 APR Tuned |
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02-12-2020, 02:17 PM | #27 |
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Some other methanol controllers are not progressive. They simply turn on full flow when they reach the trigger. The reason the progressive one is nice is you can start a little less flow at lower boost levels. When I had mine setup (3.5 bar) I had it at 30 for start and 50 for full. You will feel it if there is too much methanol flow for your boost level.
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2011 E92 335i | 11.7@125 SOLD
2017 Camaro SS | 12.7@114 SOLD 2019 Audi TT RS | 10.5@130 SOLD 2020 F97 X3M | 11.0@123 2023 G80 M3 xDrive |
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