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09-17-2016, 10:50 PM | #1 |
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1/4 mile test. Is this right? Convertible steptronic
Hi guys,
So I wanted to see what my car can do down the 1/4 and did 2 runs. The first was the best at 13.0@108. Seemed pretty good except 60ft wasn't great. Seemed to grip quite well. Mods are Jb4 map 2 on 98oct DP DCI Front mount CP It's steptronic and a convertible. For those mods shouldn't my mph be greater than 108 based on theoretical hp? Sure a better reaction time and 60ft should get 12s but I still feel that these numbers don't stack up? Anyone have similar experiences? |
09-17-2016, 11:12 PM | #2 |
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Seems a bit slower than expected.
I've done almost exactly the same time with a tune only. I now have DPs and IC and I would expect 12.6@112 or similar. The car seems a lot faster. B |
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09-17-2016, 11:27 PM | #5 | |
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I ran 11.93@115mph in my old 135i vert. Similar mods but I had some race fuel and methanol injection. |
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09-17-2016, 11:46 PM | #6 | |
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Did you do that with a stock LPFP? |
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09-18-2016, 01:24 AM | #7 |
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There was no MHD back then in 2012 when I ran that time. It was my own backend flash via COBB with a custom map 6 curve.
I had a stock LPFP but ran some MS109 race fuel. |
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09-18-2016, 03:41 AM | #8 |
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09-18-2016, 03:28 PM | #9 |
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09-18-2016, 05:42 PM | #10 |
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Whether someone has just a tune
or a tune and also supporting mods doesn't really matter that much over a single 1/4 mile run. What really matters when it comes to peak power is what the tune actually is. No two tunes are equal. It's possible that someone could have a more aggressive tune without supporting mods and yours just happens to be less aggressive. If you want to go faster you need a more aggressive tune. Period. In my Steptronic vert I've run maybe slightly faster than you with only a JB4 on map 5 with only DCIs but I was on an E35 mix. As JB4335 said, you need some increased octane to increase the aggressiveness of your tune and you should run a faster time. In a nutshell. Supporting mods like intakes, exhaust, FMIC, fueling, fuel, etc don't make power. They only support higher levels of power. It's your tune that makes the power.
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09-18-2016, 09:44 PM | #11 | |
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09-18-2016, 10:45 PM | #13 |
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09-20-2016, 06:40 PM | #14 | |
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09-20-2016, 07:43 PM | #15 | |
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A limp mode by itself doesn't tell really much of anything. You need to read the actual code to see if it's fueling, misfire, boost, etc etc.
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10-01-2016, 01:29 AM | #16 |
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It was on map 5. It ran really well for a while, then limp. Shut it off for a few minutes, its good again for a while, then limp. Then on the way home it just turned off. Tried starting but all it did was turn over. Left it for a few days and all good again. Have never ran e85 on map 2. Actually, havent ran e85 since that time at all.
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10-03-2016, 07:48 PM | #17 | |
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If you experience issues with E85 you need to datalog to make sure that the car is getting sufficient fueling. I'd recommend either reducing the E85 percentage and/or get a back end flash and/or getting a LPFP upgrade.
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11-11-2016, 02:54 AM | #18 | |
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11-13-2016, 09:10 PM | #19 | |
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As for a battery, really anything would be fine but it all depends on your uses. I just had NRMA install one of their batteries in my car for $264 last week because one of the cells in my battery died. It drove with no problem but it wasn't holding any charge and was overheating. The NRMA battery is an 80aH which is the same size as the stock battery so fits in perfectly. I coded it myself using the Carly for BMW App. If you want to, I can just code your battery for you using the app and my cable since I've already purchased the battery coding module on it. I may as well use it. But yeah, if you're just looking for a stock battery, really anything that's the correct size so the bracket will hold it down and the right aH rating so you don't have to worry about it running out of charge if you leave it a couple weeks without driving it on holidays. Otherwise if you're looking at reducing weight there are quite a few options to choose from as well like lighter weight AGM batteries which are similar in cost but a lower aH rating or even an LiPo battery (which cost A LOT).
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