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Potential on pump gas only?
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01-20-2015, 03:29 PM | #1 |
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Potential on pump gas only?
Good evening all.
I was wondering what potential the N54 has on 93 pump gas? I've had my car for a while now and went with a Cobb tune shortly after buying, this made a huge difference and makes the car great fun. I've got lots of parts ready to fit in the spring; VSRF downpipes, VSRF 7" intercooler, BMS OCC, Forge diverter valves, BMS chargepipe, RB PCV (also LSD, lots of suspension mods, VMR rims, PSS tyres) I've recently changed the plugs and coils and will be walnut blasting soon. So with these mods in mind can anyone give me an idea of power/torque once I've had a custom tune (PTF etc). I don't have access to E85 and would prefer not to run Meth. Also what would the potential be if running an RB/Vargas turbo setup? Worth the outlay without E85? |
01-20-2015, 04:56 PM | #2 |
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I am also interested to know I have all the above installed with stock frames 93 PTF tune and am getting 336hp awhp. Is that about right or should I be getting more?
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01-20-2015, 05:30 PM | #3 | |
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Stacked BMS Flash & JB4, Dinan CAI, ER Chargepipe, 7" VRSF Intercooler, VRSF Catless DP's, ER Sport Oil Cooler w/Steel lines, Gunmetal 19" VMR V710's, 335is clutch |
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01-20-2015, 05:37 PM | #4 | |
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01-20-2015, 09:08 PM | #5 | |
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01-20-2015, 10:02 PM | #6 | |
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I have a custom PTF tune with virtually identical mods. A custom tune is ESSENTIAL to getting the most out of your mods, the OTS maps are just to get the car going with generic parameters. A custom tune will take full advantage of your supporting mods and it's a night and day difference.
Check out my thread for more info here: http://www.e90post.com/forums/showthread.php?t=1056023 My car is FBO on 91 octane and maxes out around 350whp and 415wtq. Note this dyno was done on 93 octane, but my car is actually tuned for 91 so I am not maximizing the gains from the higher octane which some report to be as much as 20-25whp worth. I assume it would be closer to 360-370whp if tuned for 93. Quote:
Compare that to my graph: You can see how the RB car makes power allll the way to almost redline and torque does not fall off by almost 100 units after 4500RPM, something the stock turbos simply cannot do. The drop off in TQ is still there, but nowhere near as big as on my car. Last edited by dbworld4k; 01-20-2015 at 10:13 PM.. |
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01-21-2015, 04:46 AM | #8 | |
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The first (RB) graph shows that full torque comes much later at 3Krpm, while on the stockers it's at 2.3-2.5Krpm, so it's about 500-700rpm later based on that data. |
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01-21-2015, 08:44 AM | #11 | |
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'10 335xi, VTT stage 2, wagner I/C, ER oil cooler, PTF tuned, M3 rear arms & bushings, ecs trailing arms, ST S3 coilovers, Corsa exhaust
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01-22-2015, 11:38 PM | #12 |
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Im making 40hp more with rbs then what i was i stock turbos on pump fuel. The 500-700 rpm is something i did not notice as laggy at all.
Hp checked on Virtual dyno. |
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01-23-2015, 02:34 PM | #13 |
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Thanks for the replies, things are becoming clearer
What I'm taking from this is: 1. I'm probably at around 320whp right now 2. An optimised FBO setup with standard turbos will take me to around 370whp (big jump from where I am now) 3. RBs/ Vargas offer a decent gain (a further approx 50whp) 4. Boost threshold (spool) will rise by around 700rpm 5. The power band will move right on the graph, and still pull beyond 6000rpm My path will be to optimise the current turbo setup and live with that this summer and then see how I feel next winter. Can't wait to get the mods on now |
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01-23-2015, 05:56 PM | #14 |
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I'm not saying they don't make more power. But the amount of power you get for around $5000 parts and labor, is what, 50whp with a better power curve? It's not a significant increase is all I meant. I didn't mean to say there is nothing, but it's certainly not a significant bump for the money compared to the other bolt on mods others do to get to that point of having to swap turbos. I'm just saying, don't expect wonders on pump gas.
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01-23-2015, 07:34 PM | #15 | ||
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01-25-2015, 08:46 PM | #16 |
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I have heard lots of people say that RBs don't spool up as fast (as OEM) but I don't notice it on my car. I have a FBO 09 E92 6AT with a tune from Wedge and I can easily spin my tires through 3rd gear if I try and I have 275 PSSs in the rear. You might not see huge max hp gains on pump gas with RBs but you will notice a substantial difference and won't regret spending the money. You will also notice the 'turbo whistle' a lot more with RBs.
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01-26-2015, 12:49 PM | #17 |
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It depends how aggressive you would like to tune your car.
A good not too aggressive tune will give you around 400 whp.
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01-26-2015, 01:45 PM | #18 |
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Jake gave me a 93 tune before I went to e50 that netted me 390 rwhp / 450 ft-lbs. Caveats apply for all of these numbers based on the dyno you run and ambient conditions.
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2009 e90 335i | AT | AG M590 | Conti DW | KW V1 | Lux | Akebono
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01-26-2015, 01:53 PM | #19 |
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FBO JB4 335is 93 oct No flash Map 2
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335is/DCT-M3 GTS software-M3 drivetrain-M3 GWS-KOMBI-DSC-SZL/MHD/BQ Tuning IG@ClustersandCoding
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01-26-2015, 02:44 PM | #20 |
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Tony Vargas expected 450awhp to be the max on pump only on his stage 2's.
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'10 335xi, VTT stage 2, wagner I/C, ER oil cooler, PTF tuned, M3 rear arms & bushings, ecs trailing arms, ST S3 coilovers, Corsa exhaust
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