03-31-2014, 05:42 AM | #1 |
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M135i aftermarket mods and results
Just realised I'd been rather remiss and not actually posted any of the results from my tinkering with my 2013 N55 M135i...
So in short I will say that the car was dyno'd at Surrey Rolling Road in the UK along with several other 1-series cars a couple of weeks ago. They use a Dyno Dynamics RR in shoot-out mode and this is usually a very stern and honest piece of kit. The standard M135i's (and those with BMWMP exhausts) made the correct and expected numbers of around 325hp, 330 ftlb I was very happy to achieve a rather better than expected 394 hp and 450 ftlb Performance mods on my car (so far) are a BMS JB4 running Map 2, full Scorpion decat downpipe and exhaust system, Forge Motorsports intercooler and BOV, Birds/Quaife ATB diff As you can see, there aren't that many mods on the list so far and I have several more in the pipeline -including a Forge charge pipe, Forge intake and then the addition of water/meth injection should hopefully see me over the 400 mark,,,
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2013 M135i N55 F21 | Scorpion TBE and Decat |AirREX & Accuair air-ride | JB4 Stage 2 | BMW MP Blackline lights | BMW MP grills | SSDD Carbon Splitter | Birds/Quaife ATB diff | Forge intercooler and atmo BOV
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04-04-2014, 09:11 AM | #3 |
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Ok chaps.
Since you asked for it I'll try and layout all my mods and the respective gains achieved at each stage. Obviously these weren't all tested on the same rolling road and on the same day and the car will have loosened up over time but hopefully it should give all those interested an insight into what's possible. These numbers are all backed up by dyno plots, most of which I was present for...Please don't shoot the messenger or start a dyno flame-war; we all know how unreliable a lot of dyno data can be... :roll: 0. Stock; 322 hp, 334 ftlb 1. Scorpion catback exhaust to replace OEM system; 334 hp, 340 ftlb 2. Scorpion decat DP added to TBE above; 342 hp, 358 ftlb 3. JB4 Map 2 added to above; 378 hp, 440 ftlb 4. Forge FMIC and BOV added, dropped IAT from 60 degC to 30 degC; 394 hp, 450 ftlb 5. ???? :twisted: :twisted: :twisted: :twisted:
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2013 M135i N55 F21 | Scorpion TBE and Decat |AirREX & Accuair air-ride | JB4 Stage 2 | BMW MP Blackline lights | BMW MP grills | SSDD Carbon Splitter | Birds/Quaife ATB diff | Forge intercooler and atmo BOV
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04-04-2014, 10:28 AM | #5 |
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Oh God, here we go....
Yes, it did dyno slightly more but that's only slightly Most of the stock UK cars I've seen run on a dyno came out bang on the quoted numbers, give or take....
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2013 M135i N55 F21 | Scorpion TBE and Decat |AirREX & Accuair air-ride | JB4 Stage 2 | BMW MP Blackline lights | BMW MP grills | SSDD Carbon Splitter | Birds/Quaife ATB diff | Forge intercooler and atmo BOV
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04-04-2014, 11:15 AM | #6 |
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Here we go? Are people giving you hard time about your numbers? The F30 N20 I had prior to the F20 felt stronger than the rated 240 HP (on the Butt Dyno) 😜
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04-05-2014, 04:00 AM | #7 | |
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Quote:
It's just that these threads frequently descend into a "my dyno is more accurate than yours" type of debate!!
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2013 M135i N55 F21 | Scorpion TBE and Decat |AirREX & Accuair air-ride | JB4 Stage 2 | BMW MP Blackline lights | BMW MP grills | SSDD Carbon Splitter | Birds/Quaife ATB diff | Forge intercooler and atmo BOV
Last edited by Bruce GT3; 04-05-2014 at 07:40 AM.. |
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04-08-2014, 04:26 AM | #10 | |
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The Forge FMIC is probably too new to show up on the website and in catalogues. If you contact Chris Lloyd at Forge UK on Chris@forgemotorsport.co.uk he should be able to sort you out.
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2013 M135i N55 F21 | Scorpion TBE and Decat |AirREX & Accuair air-ride | JB4 Stage 2 | BMW MP Blackline lights | BMW MP grills | SSDD Carbon Splitter | Birds/Quaife ATB diff | Forge intercooler and atmo BOV
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