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      08-04-2018, 06:08 PM   #1
Madvillain
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Red face bms stage 1 m5 vs m4

i did a few runs last night with my brother and another friend (both f8x stage 1 cars) and the results were surprising lol....when my m5 was stock it was identical to my friends bms stage 1 m3 from 100 to 200kph. have since installed bms stage 1 on m5 and last night decided to test it against the m4 and m3. long story short the 2 of them were identical (surprise surprise) but what was shocking was they were somehow identical(or there abouts depending on who stepped on gas first) to the m5.... so what gives anyone else experience anything similar?

i have footage with gopro but its at night. i can run it again tomorrow if anyone curious about proof of this.
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      08-05-2018, 08:50 PM   #2
Pikey Motorsports
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Something not right

My stock m5 is identical to stage 2 m4 done many runs
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      08-06-2018, 11:42 PM   #3
Madvillain
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Quote:
Originally Posted by Pikey Motorsports View Post
Something not right

My stock m5 is identical to stage 2 m4 done many runs
exactly ive done that same friends m3 (bms stage 1,res delete, intake) and was identical to the m5 stock (no surprise there). but this is really weird. i did a 4th gear pull with brother in m4(bms stag 1) otw home and the m4 pulled. i contacted bms to see if the unit could be faulty but i think the culprit is the heat. i think s63tu has some serious issues with heatsoak. we have like 20-35 degree weather here so i think that plays a roll. how i came to this theory (yet to be proven) is on a fun run brother stomped on gas and i reeled him in from pre dam far back starting way later than he did. wanted to see if anyone on forum was experiencing this inconsistency with f10 m5 tuned.
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      08-13-2018, 10:32 AM   #4
TrevorM3
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Why are you doing 4th gear pulls?

I had an AA piggyback, with downpipes, had no issues handling jb4 m3's/m4's with downpipes.
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      08-14-2018, 09:31 PM   #5
ZachP51
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I'm running an ESS tune and DP and have no issue walking tune and DP M3/4. Something must be wrong.
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F10 M5//F30 328i //E92 M3 C/P (Retired)//E82 135is (Retired)//E92 335i (Retired)
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