11-16-2011, 12:07 AM | #45 |
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The # is amazing, and this is why I love BMW!!! But please correct me if I am wrong: I am assuming you will need a FMIC and a better cooling system(at least) in order to make the tuned engine more stable/reliable, and not even mention about the warranty. With all these extra money why not just get a 35?
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11-16-2011, 12:07 AM | #46 |
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You don't have the N20 turbo 4 cylinder engine. You have the N52 naturally aspirated inline 6-cylinder engine. Next year's new 328i sedan will have the N20 engine.
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11-16-2011, 12:59 AM | #47 | |
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Also, I doubt they'd ever end up as peaky as the JDM cars...those cars started out with peaky engines with too little torque. When the base engine has a flat torque curve, you have to try to ruin that. |
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11-16-2011, 01:50 AM | #48 | |
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Hi Jason,
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Greet Uli |
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11-16-2011, 04:47 AM | #50 |
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What happens with the BMW warranty when you tune the engine with Kelleners or other aftermarket tuners?
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11-16-2011, 05:06 AM | #51 |
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Because of the torque for F10 also automatic transmission was different from 535i upwards. If 328 and 335 have same tranny, then there is no problem, if not then it will start hurting it as well. And also the issue of warranty...
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11-16-2011, 07:56 AM | #52 | |
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The N20 will not meet stock 335i numbers reliably without hardware mods. You will not get a 335i for 328i money plus $800. The inline 6 is smooth and sounds beatiful. The new N20, while a fantastic motor, just insn't the legendary BMW straight 6. |
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11-16-2011, 08:46 AM | #53 | |
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With particular respect to the N20, I'd be very concerned about the lack of appropriate cooling after the tune, causing reduction in long term durability.
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11-16-2011, 08:56 AM | #54 |
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Cool, so performance should be similar to a non-tuned N55.
Small nitpick regarding the initial post - the X3 xDrive28i does not yet use the N20. It is still using the N52. It is the X3 xDrive20i that uses the N20. Presumably the xDrive28i model will switch the N20 sometime next year, probably starting with model year 2013 if I had to guess. Also, the F20 120i mentioned in the OP does not exist yet. However it will debut in Geneva according to SCOTT, along with an F20 128i. The F21 should debut ther as well. |
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11-16-2011, 09:01 AM | #55 | |
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If more energy is being produced, more heat will be produced. This applies to any engine including an STI or an EVO. I would put BMW's engine construction up against Subaro or Mitsubishi any day of the week and would argue its superior. The key here is to pay attention to what cooling is in place and what would need to be added to maintain stock reliability. |
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11-16-2011, 09:04 AM | #57 | |
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11-16-2011, 09:09 AM | #58 | |
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What is it about the *20i N20 that prevents it from being tuned to 294hp just like the *28i N20? If it comes down to something that's reasonably simple to change, then I predict a whole lot of 300hp 120i, 320i, and 520i in the near future. For that matter, think about the N18B16 engine found in *16i and *18i models. This engine is basically just a longitudinally mounted Mini Cooper S engine. Don't the tuners get over 300hp from that engine too? |
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11-16-2011, 09:16 AM | #59 | |
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Oh my good, the N54 fanboy fraction makes me really happy ... but I can understand, that it would be hard and that, if "the best engine of the world" would getting in danger from below from an much cheaper I4 and at the same time the new M3/M4 is getting far out of reach with an innovative V6 BiTurbo with ~470hp, you are getting crazy ... its hard to loose his religion !!! Greets Uli_HH Last edited by Uli_HH; 11-16-2011 at 09:33 AM.. |
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11-16-2011, 09:23 AM | #60 |
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Oh Christ.... Here comes the "My 328 can beat your 335" threads. Shoot me.
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11-16-2011, 09:25 AM | #61 |
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11-16-2011, 09:26 AM | #62 |
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11-16-2011, 09:41 AM | #63 | |
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Hell, my STi had 380whp for 40,000 miles when I sold it and it was kicking strong. That's a good 100+ whp over stock. I'm sure the N20 can handle an extra 40whp without a problem. |
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11-16-2011, 09:56 AM | #64 |
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Correct me if I'm wrong, but the N54 is only pushing around 8.5psi I believe, and the N20 is pushing around 17.4. So I'd think, yeah the N54 would be more reliable with a tune pushing around 17-18psi, then the n20 will be pushing into the 20's.
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11-16-2011, 10:16 AM | #66 | |
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I would also point out that my comments regarding needing more cooling, etc. applies to any tuned turbocharged car, not just the new 328i. |
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