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05-31-2012, 10:13 AM | #23 |
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I don't know how this is going to be priced, but I've heard a few people kicking around the $6k figure - which is batshit crazy. You can get more performance (and a warranty!) for less money - it's called a 135i.
And no offense to the OP, but who is he exactly? Do you really want to put a supercharger onto your Al-Mg engine that someone R&D'ed out of their garage?
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06-03-2012, 10:29 PM | #24 |
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Putting in an aussies pov, a 130i can be had sub 30k, a 135i starts at 50k... So the same money is every suspension mod possible, bbk, full exhaust, wide body, wheels, stereo, all the bmwp cosmetics.. Heck probably even bmwp seats. And you've still spent less money
You guys over in the us? Well only reason would be their aim of 320-350whp on their 'base' kit (which really is around or even more than a tuned 135i), bit more on the low end and less weight So really for me it's 'i could only afford a 130i at the time and hey now i can still upgrade it and still have spent less!' Ed: and whats wrong with rnd out of a garage? It's how horsepowerfreaks started and you don't see anyone ragging on their m3 turbo gear eh?.. Except for the price.. |
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06-04-2012, 08:04 AM | #25 | |
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And the N52 sounds great and has nice response. I've owned modified turbos and NA cars, and had missed the experience of an NA at redline. S/C wont go astray once I do the suspension, 250rwkw is a nice amount for street in my experience. |
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06-13-2012, 04:51 PM | #26 | |
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06-13-2012, 06:13 PM | #27 | ||
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Results of some of their "engine work":
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06-15-2012, 12:20 AM | #28 | ||
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Sure the n52 wont handle stupid power like 600+hp etc but 300-350 stw on 6-7lb of boost i dont find physically unreasonable? |
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06-15-2012, 12:44 AM | #29 | |||
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06-15-2012, 10:08 AM | #30 | |
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I would be curious as to Gavin and MMWs take on forced induction heat in regards to our aluminium/magnesium blocks.
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06-17-2012, 05:13 AM | #31 | |
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why would you get a tune from elsewhere when using HPF for other stuff though? seems strange. i'd be more concerned with the pressure than the heat personally, i mean, daily driving should be unaffected either way, and even a track day or two with proper care, so 99.99% of users.. but what if you decided to have a rather 'extended' track day.. though.. oil temperatures even, for that matter. |
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06-17-2012, 07:38 AM | #32 |
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I don't ever find them cool personally. They are a failed Supra tuner that tried to bully their way into into the BMW scene with lies, threats, and coercion.
I believe Marcus got a tune from ProEFI in an attempt to fix the problems of the HPF junk on his car. In the end as that video shows, the problem was much bigger then a poor tune from HPF.
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06-18-2012, 04:55 AM | #33 | |
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not defending them per se, but i haven't really seen much more around the internet about them being shonky |
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06-18-2012, 08:41 AM | #34 |
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There is plenty if you do a bit of searching. There's a reason they are banned from M3Forum, which arguably would have been their largest market. Aside from ***********(which is little more than a subsidiary of HPF and Gintanni via Sticky), they aren't held in high regard on any forum.
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08-11-2012, 12:21 PM | #35 | |
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In the case of the magnesium-aluminum block, Welter says, “Right now, the crankcase-stress of the turbocharged engine is above the limit of the aluminum/magnesium crankcase.” http://wardsauto.com/news-amp-analys...bo-pay-bmw-i-6 |
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08-11-2012, 04:34 PM | #36 | |
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08-11-2012, 07:41 PM | #37 | ||
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Unless sc puts dfferent pressure on the engine than turbo ? |
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08-11-2012, 11:18 PM | #38 |
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Uh, he's not just "someone 'saying' it," he's the production manager of the engine! Presumably he knows what he's talking about. Who better knows the tolerances of the engine than the engineers that designed it?
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08-11-2012, 11:29 PM | #39 | |
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i work on mobile phone (radio transmission) systems, and i could say a particular piece of hardware can only tolerate xyz, but the reality is i can't be sure until it's been put under that sort of load. and the 7psi of a supercharger is less than the 20 odd that would be put through on a turbocharged system anyway, different systems flow volumes of air differently. |
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08-11-2012, 11:55 PM | #40 | |
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08-12-2012, 08:13 AM | #41 | |
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The N54/55 engines are factory boosted to a little over 8lbs not 20+. They are turned up a bunch by some aftermarket tuners though and thats often when problems start. If the N52 could have reliably handled 7-8lbs of boost I'm confident they would have used it. I think Mr. Welters satement says it all and ends debate. Sure, you might see someone come out with a kit. There are always unscupulous companies looking to make a buck not caring who they might hurt but respectable companies likely wont touch this with a ten ft pole, and havent in 8 years! They know the repercussions down the road with grenaded engines and mad customers everywhere. There are many tried and true ways to make good N/A power with the N52 engines. F/I isnt the way to go though. Last edited by NYC6; 08-12-2012 at 09:33 AM.. |
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08-12-2012, 05:42 PM | #43 | ||
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The tunes on the n54 don't encounter block or head problems, more valves gumming up and fuel pumps failing? There arent really any proven ways to get power, it's taken hours of searching to find a couple of totally separate people who've gone for bug numbers, and you know what the common factor is..? They ALL went for a motec, aftermarket ecu, to actually tune it. If a 1.6/1.8 etc. b16/b18 honda motor can get to 600hp, heck, even the 1.8 4g93 mitsubishi handles 7 odd psi sc on sock flimsy rods, the SIGNIFICANTLY stronger n52 hould be able to do a lazy 400-450 The way i see it, of course they'd want to cover their asses as to why the 'superior' engine is being left behind. I challenge you to find me someone who has properly modded te n52 on oem ecu. And tell me that's not what's stopping them. Heck, even in watching gavin's process, the tuning seems to be their biggest issue. Bmw is a business, they could have spent their money testing the n52 to the end of it's life, or gone with an alu and cast iron block that needs NO testing lol -- i keep thinking of more reasons for then not to.. A forced induction super light weight engine in a light weight car, in that case even the *35's would have been dangerously m-competing engines... Worst case, mmw's n52 grenades on the boost they're chasing, and i'll go my merry way and go for a 400bhp all motor Best case it works (realistically out of everyone in the world gavin ha had the most experience with FI N52's) and someone (maybe me? Haha) will see how much boost they can actually take til they pop haha. 7psi is basically nothing in engineering terms, even the 18psi (on stock turbos) the n54's push is considered moderate in terms of what 'high' boost is. Twincharger setups in vw's are 3x psi from memory, and i know one guy over 60 in a moderately worked 4g63's (then theres the blueprinted ones being made at 70 something high static compression lol, but those ones are race onesthat get stripped every 10000) |
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