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01-18-2014, 09:58 AM | #1 |
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Order of Modification
What's the order of modification does one take with these cars? I can't afford to purchase all the engine mods up front without making dumb financial decisions, so it will be done piece by piece. It's a '11 135i M-Sport. N55 car, DCT.
The list of things I want to do, in no particular order, are as follows: Intake Charge pipe Intercooler Down pipe Full exhaust Tune Boost gauge Wideband O2 sensor/gauge Possible mods: Meth Injection Blow off valve Any suggestions? Additions, subtractions? I'm only listing power related mods in here. Nothing overly major (i.e. turbo, cams, forged pistons, port and polish, etc.), I'll wait for the car to be paid off for that. Last edited by 135iRick; 01-18-2014 at 10:13 AM.. |
01-18-2014, 06:11 PM | #4 |
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Hey Rick. I live in Buckhead and work at Sugarloaf Mills Mall and the Costco near Perimeter if you need to see/hear my car. My mods are listed in my signature pretty much in the order I installed them. I would not recommend catless downpipes to be done early for most owners.
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01-18-2014, 09:53 PM | #5 |
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I'd say first thing would be intake, axleback exhaust and tune should be the first. Then everything else. That's how I did it. If you go jb4 you don't need a boost gauge. Then as you learn more and want more and get used to what you have. Ease into the other parts.
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2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback |
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01-18-2014, 11:18 PM | #6 | |
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01-19-2014, 09:36 AM | #7 | ||
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2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback |
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01-19-2014, 09:54 AM | #8 | |
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Read kennys thread for some good objective info: http://www.1addicts.com/forums/showthread.php?t=397086 |
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01-19-2014, 11:40 AM | #9 |
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The two most popular solutions, Cobb and JB, will grow with you as you mod. There is little reason not to get the tune first. It's the biggest power gain by a long shot. ~50whp on a bone stock car.
I agree the intake and muffler (axleback) are largely moot, and will primarily be sound enhancements.
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01-19-2014, 12:49 PM | #10 |
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Tune first. Follow up with intake an exhaust, then IC. The CP isn't really a problem for the n55 from what I've seen, but I would move to that with downpipes last.
That being said, there's no real order that you have to follow, although the tune will make the biggest immediate difference and it's perfectly fine to put on first. |
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01-19-2014, 01:00 PM | #11 |
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I agree with above. Tune then intake and exhaust, if you can afford it all three at once. The other sounds completely backwards to me. Tune, meth kit, then dp's and charge pipe? I would never do that. When I first installed my jb4 it had prerequisites to going up each map. First was intake, axle back. Second was downpipes which allowed me to run higher boost. Then came the intercooler and charge pipe to up the boost more with race gas. Now that all that's done and I want to stay at top boost and not have to buy race gas I'm going meth. I'm not sure if I'm being over protective of my car but I would not get a jb4 and then hook up a meth kit and run 18psi without all of the other supporting mods. I guess it's up to what the op can afford. Definitely search the tunes and build your car to what the tune manufacture suggests. I built mine according to what was suggested I do before I pushed the car more. Intake and exhaust was the easiest and the first things.
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2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback |
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01-19-2014, 02:45 PM | #12 |
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Downpipe was first for me, followed by JB4, which was a mistake because chargepipe should have come first lol. Then resonator delete (superb), and intercooler. Lastly, flex fuel wires and 60/40 mix. Loving it!
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01-19-2014, 04:09 PM | #13 | |
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01-19-2014, 04:28 PM | #14 | |
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In regards to OP's question I think it's a question of what you want. When I got my car I knew the quad exhaust was going to be first for the look. So what are you trying to upgrade? Looks, sound or performance? That really determines where to go, not what anyone else's preference is. |
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01-19-2014, 04:34 PM | #15 | |
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01-20-2014, 10:32 AM | #16 | |
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flex fuel wires? |
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01-20-2014, 10:36 AM | #17 |
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Performance first, then sound. This car does need better sounding exhaust, it's a shame how quiet they make these engines.
So I'm looking at in order: Tune/Charge pipe Intercooler Down pipe Intake/Full exhaust Wideband O2 sensor/gauge |
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01-20-2014, 10:50 AM | #18 |
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No need for any tacky gauges if you go with JB4.. And flex fuel wires from BMS to go along with the JB4 so you can run up to a 50% mix. Without the wires you can only run a 20ish% mix before it leans out.
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01-20-2014, 11:44 AM | #19 | |
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(note they have specific maps for FMIC and DP, and all combinations thereof) Worth noting that exhaust is not marked as suggested on the 335i maps. For some of the same N54 maps it remains marked "stock." This seems to indicate they believe the 335i has a better flowing exhaust from the factory, which I believe is correct.
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01-20-2014, 01:11 PM | #20 |
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01-20-2014, 04:45 PM | #21 | |
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Rick, the jb4 is a piggyback harness that you plug into a few plugs in the engine bay. Flex fuel wires plug into the jb4 and hijack one additional plug in the engine bay, allowing jb4 to increase fuel flow rates for people running fuel mixes with higher ethanolcontent |
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