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MHD is the logical way to go. Flash tuning>Piggyback tuning. I had more power when I was running the JB4 hence the higher trap speed. MHD was more consistant and smoother. I put the JB4 on my X1 because I didn't want to bench flash my DME quite yet. I honestly hate the JB4 but I don't love MHD either. I will say when running MHD it feels like the car came from the factory with more power and with the JB4 it can sometimes feel more violent but I think part of that is the inconsistency. If you plan to run the JB4 you really should have a BEF since the JB4 has really limited control.
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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
Last edited by Turbod; 05-09-2019 at 05:20 PM..
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