08-21-2017, 10:02 PM | #1 |
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FBO JB4 m235i (manual) Dyno
Thought I'd share this, I figure this might help someone out. Sorry no bone stock dyno, I wish I had one too but the mod bug bit hard early. Did the next best thing and did one with the stock performance map (map 4). All done in 4th gear.
1st pull map 2 356whp 403wtq 2nd pull map 2 365whp 392wtq 3rd pull map 4 325whp 343wtq Mod list: jb4 stage 2 VRSF chargepipe VRSF DP VRSF FMIC Fabspeed muffler bypass K&N drop in filter BMS connect kit Dinan springs/bump stops M performance front lip M performance rear carbon fiber spoiler M performance rear diffuser M3 style carbon fiber mirrors VMR wheels |
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08-21-2017, 10:37 PM | #2 |
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Great numbers man! theres a good bump from the stock map!
What fuel were you on?
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399.8whp on 91oct Hmu on Ig: @n55_shayan |
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08-22-2017, 08:49 AM | #4 |
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Haha must be nice shit i wish i had 93 lmao. And yea i mean bm3 is great man haha why not look into bm3 with a BEF?
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399.8whp on 91oct Hmu on Ig: @n55_shayan |
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08-22-2017, 09:33 AM | #5 |
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wish ppl would keep settings the same ie: STD smoothing 5.
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08-22-2017, 01:21 PM | #6 |
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Nice numbers. Very consistent with what others have seen with the JB4 and DP as the power mods, 93 octane, and runs done on a Dynojet. The Map 4 numbers are also spot on for a stock map, 93 octane, and DP. Nice.
If you would have dynoed in 5th, you'd probably see about 1-2% higher numbers..... if total numbers are that big of a deal to you. IMO, 4th on the 6MT is a good choice though as it keeps heat soak in check. |
08-22-2017, 03:39 PM | #9 |
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08-22-2017, 04:08 PM | #10 |
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08-22-2017, 08:31 PM | #11 |
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Just multiply SAE by 1.03-1.04 and you have your rough STD numbers. SAE is the gold standard. Any respectable automotive publication will only publish SAE. Dyno operators like to use the higher reading STD numbers to "wow" their customers.
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08-22-2017, 09:08 PM | #12 | |
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08-22-2017, 09:19 PM | #13 |
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Gotta admit the AFR freaks me out on this car. When I saw 15s in the dyno sheet I thought that was at redline. Did some logging after that to see exactly where they're at, saw 15ish at low rpms tapering down to 12.9 at redline. I'm not a tuning guru but I understood that to mean the car is running pretty lean. Trying to get these logs posted so people that know what they're talking about can review em.
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08-23-2017, 08:15 AM | #14 | |
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13:1 rich 14.7:1 stoic 15:1 and higher is lean |
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08-23-2017, 08:50 AM | #15 | ||
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08-23-2017, 09:05 AM | #16 | |||
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08-23-2017, 03:42 PM | #17 |
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Thank you for sharing
Stock map is probably 10 HP less than map 4 since you already have high downpipes
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08-24-2017, 04:25 PM | #18 |
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Nice!! Would love to see your numbers with some e85 added!!
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09-06-2017, 02:43 PM | #19 |
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+1
Manual cars should be Dyno in 5th gear ; + STD CF
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09-06-2017, 09:27 PM | #20 |
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STD correction factor isn't right unless you want to inflate the numbers by about 4% and feel better about yourself. The industry standard is SAE.
As for dynoing in 5th, that too would increase the numbers a percent or so as well. Dynoing in 4th is fine and helps keeps the motor from heat soaking on back to back runs. |
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09-06-2017, 09:46 PM | #21 | |
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But it's not possible for me to dyno in 5th anyway, my top speed limiter is at 130. I'll flash eventually but for now I'm just sticking to tracks where I don't need to go past 130. |
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09-09-2017, 04:23 PM | #22 | |
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Would love to hear more from one of the local 2addicts tuners, on the whole AFR gig. |
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