Especially when the same difference is observed between N54s themselves. Peak numbers were 266 hp and 302 lb-ft. Before you start typing your “N55 sucks! Ever since the twin turbo N54 hit the markets in the 2007 BMW 335i, BMW has been building on the design of the turbocharged, direct injected inline 6 engine. But N55 drivers come stock with 30whp on the right foot. It's almost a flat power curve from 5200rpm to redline even tuned. The N55 was BMW's first straight-six engine to use a twin-scroll turbocharger.It also won three straight Ward's 10 Best Engines awards in 2011-2013.. Once the tune was changed to map 2 the N55 put down 322 hp and 369 tq. But N54 is capable of holding higer boost for longer vs N55. >The end result? The car is a 2008 335, ACF top mount kit running a 6266 G2, China intake manifold w/ port injection (we'll be stocking these soon), JB4 with integrated PI … In 2010, the 335i received the updated N55 engine followed by the B58 in 2016, however, the model was rebranded to the 340i. I figure its an apple to oranges comparison, but I would be curious to see if there is any obvious differences. Dec 1, 2016 496 324 0 New York. And besides, we ‘re talking about an engine that over-delivered to begin with. So lets start the fight. This isn ‘t a surprise-the N55 has only one turbo with which to force-feed the engine with air. It. I'll overlay with some stock N55 dyno charts for a visual comparison. I thought there was a butt dyno difference between my 07 and the N55 I test drove back in June. Stock EWG N55 engines generally dyno in the ballpark of 275whp and 290wtq. ferocious. Since the moment we learned of the N55 replacing the N54 we ‘ve asked ourselves one simple question, are we getting a more efficient yet less powerful engine? Mod vs Mod N54 makes more power using the JB platform. Don't resent growing old. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! N55 MHD Stage 2+ Horsepower & Mods. The baseline on the N55 with a downpipe was 289.6 hp and 301.0 tq. I wish someone had a dyno result to compare with the is/N54/N55. The dynamometer we used to measure the 335i ‘s output is a DynoJet model, and DynoJets tend to read higher than other dynos, but the output was a good bit higher than we expected. The N55 is only limited by it's turbo size and fueling when it comes to making power. I bet there is a noticeable butt dyno difference between the 335is N54 and the N55. A twin-scroll turbo is just a standard turbo with the exhaust housing split into two scrolls. The N54 felt faster, I thought, because the turbos took that extra second or 2 to spool up, which had more of a head jerking effect. All Rights Reserved. 2010 FBO E60 meth n54 335i vs 2012 FBO E50 PURE stage 2 turbo targeting 19psj n55 135i. Order Today! While the N54 was BMW’s first mass-produced turbocharged engine, the N55 was their first engine to use a twin-scroll turbocharger. It reminded me of the musclecar era when everyone was underrating horsepower. Although we were very happy with the results on the DynoJet, we had the opportunity to run it on a Mustang dyno for comparison. N54 vs PURE STAGE 2 N55 Track days, timeslips, and kill stories So essentially you are sacrificing some drivability (turbo lag) with the N54 engines in exchange for increased power. As evidenced, fueling plays an important role in horsepower gains. Anyone who truly DRIVES! The N54 was put in the 335i until BMW made what's believed to be a more cost-effective engine, the N55. >In fact, the only real difference between the regular N54s and their successor, the N55, is that the N55 ‘s output drops off more as it approaches its maximum speed. I still think both engines are great, putting aside the fuel delivery issues. I thought there was a butt dyno difference between my 07 and the N55 I test drove back in June. I am with you Galahad05 and MarkK. 91 octane is typically regarded as poor fueling. Pull 1 - 372.15 whp 436.16 wtq Pull 2 - … Gabriel Bridger 2020. Automobile magazine has wondered the same thing and (thanks to dyno testing the N54 over the years) has some solid data to help figure it out all. Bringing the BMW community together. MHD N55 E Series WedgePerformance Custom E30 on Stock 2012 135i MSport DCT. - 1st run: JB4 Map 1 + BMS Intake- 2nd run: JB4 Map 2 + BMS Intake + Megan Racing Downpipe + COBB Intercooler A true testament to what an N54 is capable of with basic modifications. 0: 213: Phoenix Racing Aluminum Intake Manifold w/ Port Injection for N55! The curves are almost identical to 5,500 RPM and even after that the difference is fairly miniscule. The N54 /N55 intercooler tubes with coupling and clamp kit includes stainless steel clamps for a leak-free seal and heavy-duty 5-Ply reinforced silicone elbow coupling for strength. JavaScript is disabled. I need to double check the exact numbers on the N54 but I believe they were slightly lower, especially in torque because the N55 was dyno'ed after the down pipe install. The new engine, the N55, is different from the N54 in that it uses only one larger turbocharger in place of the N54's two smaller turbos. Thanks for posting that. I also wish that BMW made an upgrade for the PPK to capture the overboost feature of the is, since it seems like the PPK is identical in hardware to the 335is. Threads in Forum: N55: Forum Tools: Search this Forum : Rating Thread / Thread Starter: Last Post: Replies : Views : Sticky: F Chassis N55 JB4 (1 2 3... Last Page) Terry @ BMS ... N54 ST Jb4 targets 9.9psi on all maps. N54 JB4 Features and Benefits • N54 Power gains of up to 100hp and 100tq to the wheels on a stock vehicle • Improves 0-60 times and 1/4 mile times • The JB4 offers a lot more performance, functionality, and safety than your average performance chip • Quick Plug & Play Installation I attributed the difference to the turbo lag in the N54, meaning the power came on earlier in the N55. Buckaroo Banzai: Hey, hey, hey, hey-now. http://www.automobilemag.com/reviews/driven/1009_bmw_335i_335is_dyno_test/index.html, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada.