10-29-2016, 07:09 AM | #1 |
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JB4+BCM Track Results
Went to ATCO last night, ran a best ET of 11.511s, and a best trap of 129.93.
2016 M5 CP JB4+BCM, Map 2 (22lbs) MS109/93 Blend Stock P-Zeros deflated to 25psi Otherwise completely stock, full weight Horrible 60ft, could not get any sort of traction until third, it was the trap that I was after and I'm impressed that it's consistently at 130mph at only 22lbs. Tried turning it to Map 7 (25lbs) and the car lit the tires up right through third, completely useless on stock rubber. I'm thinking with 25lbs I should be in the low 130s, and with a flash/JB4 set to 28lbs (or more) these cars can sit in the high 130s. Going to hit the track again with R888, definitely room to improve as traction was the limiting factor. [will update post with logs, video, and VBOX] |
10-29-2016, 08:02 PM | #3 |
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Nice runs! ET and trap speed were very consistent. Launch on some Nittos or Toyos and both will improve!!
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10-29-2016, 08:08 PM | #4 | |
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10-30-2016, 05:43 PM | #6 |
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buddy you gotta run meth to safely be at 25psi, did you check your logs? The fuel trims are just about maxed in most cases at 22psi(comp package is ok), but at 25psi no way you have enough fuel and your car is dangerously lean. Octane won't protect you from this either, only a tune or meth
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10-30-2016, 06:17 PM | #8 | ||
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10-30-2016, 06:18 PM | #9 | |||
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He said he is going to go back and run R888s which will hook, even with 25psi but it's going to put a hurting on the clutch because the jb4 targets a boat load of torque especially down low which is why it's so strong :-). |
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10-30-2016, 06:28 PM | #10 | |
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10-30-2016, 06:30 PM | #11 | ||||
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10-30-2016, 08:07 PM | #13 |
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10-30-2016, 11:42 PM | #16 |
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The op's car is not tuned and thats why i made the comment, 25psi is beyond lean. no way he is getting enough fuel on a stock tune with a jb4 without meth
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10-31-2016, 02:20 PM | #17 |
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Good job
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10-31-2016, 09:06 PM | #18 | |
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10-31-2016, 09:29 PM | #19 |
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For reference, below is a quick screenshot of 4th gear from 5500rpm and up, comparing Map 2 and the one run I did testing out Map 7.
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