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03-20-2008, 12:00 PM | #1 |
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135i/335i engine specific information?
How much "power" can it handle? Pistons forged or cast? Aftermarket turbos in the works?
Haven't seen much technicial information on the motor, I plan to make a bit more than the ~400bhp a flash will produce |
03-20-2008, 12:58 PM | #2 | |
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Right now you can get about 400whp (480bhp) by doing procede v2, catless downpipe, catback, intake, and intercooler; and i believe this is on 100 oct. Who knows what will be available as far as single turbo conversions go in the future, but i would imagine 450-500whp being the limit for the stock bottom end - btw THAT IS PURELY SPECULATION on my part. -Chris
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03-20-2008, 01:10 PM | #3 |
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380-400whp is possible on streetgas with the upcoming Procede 2.1, or Helix with IC, Catless DPs. Intake and catback might help a little, but not too much power to get now.
With 100 oct people have seen over 400whp. However, the snails (turbos) are ACTUALLY the size of a large snail in this case, so they're really running out of steam. With stock turbos, you're much more likely to blow them up than the engine. The stock fueling isn't good for much past 400-420whp, so it'll be a while before anyone breaks that. Direct Injection is very new, and it'll take some time to develop higher flow HPFP, fuel rail, injectors, etc. No one really knows how much the internals can hold up to.
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03-20-2008, 01:19 PM | #4 | |
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-Chris
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03-20-2008, 03:15 PM | #5 |
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You sure? 480bhp at the crank? Aren't most people seeing increases of around 60bhp with the map alone? So that gets us to about 360/370bhp.... where does the extra 100+ bhp come from - not from removing the cats in the downpipe and a bit of extra breathing....
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2019+ BSM M2C 2011-2012: VO 1M Coupe, many toys, Evolve Stage 3. 2008-2011: 135i M Sport Le Mans Blue / Lemon / HGSL. Evolve OBD remap - 390bhp. Also in the family: X3 M40d / Audi S4 (V8)
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03-20-2008, 03:33 PM | #6 | |
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Its going to be very exciting around here when turbo kits come out. -Chris
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03-20-2008, 04:10 PM | #7 |
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dummy question!!!
i drove a 06 wrx with 300 whp and my 5 speed tranny was about to blow! so my question is if you have like 380 - 400 whp on a 135i are you in risk of blowing that sweet 6 speed to pieces?
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03-20-2008, 04:24 PM | #8 |
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I think the numbers y'all figuring are a little low:
http://www.e90post.com/forums/showpo...postcount=1226 +78whp/340whp on a Mustang Dyno from Helix alone. Here's a helix dyno with DPs and FMIC: http://img2.putfile.com/main/3/6015523886.jpg +106hp/ 387 whp with stock intake and exhaust, on 93 octane. I'd imagine that setup could hit 400whp with a DP-back exhaust that deleted second cats, and a higher flowing intake system. Generally speaking, on these cars, race gas is good for another 20-30 whp. The engine will use it's own logic to add timing up top with the addition of race gas. PS: No reports of tranny exploding.
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03-20-2008, 05:00 PM | #9 | |
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i like to be conservative when i give people estimates on what power they can expect. that way if its more, they're not disappointed. :wink: -Chris
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03-20-2008, 05:42 PM | #10 | |
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No harm in conservative!
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03-20-2008, 06:27 PM | #12 |
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yeh i'll have owned my S for four years next month and i decided i wanted something with a backseat (just for some stuff, i don't intend on carrying any passengers) and something turbo.
-Chris
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03-20-2008, 08:09 PM | #15 | |
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-Chris
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03-20-2008, 08:16 PM | #16 |
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I'd still like to have one as a weekend car at some point, but as a DD, it got a little too small.
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03-20-2008, 08:23 PM | #17 | |
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I have the AA processor. It is a conservative tune. I can only imagine trying to actually put down all the power generated by a more agressive tune to the ground. Good luck with that. With our stock tires we will soon need at least 265s in the back to hook up with 400whp in my opinion. |
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03-20-2008, 08:45 PM | #18 | |
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Hello, There is plenty of technical information available. The N54 is not new and the engine management functions are also elaborated in many of the BMW official docs. The engine in stock form is capable of 420hp/450ft-lb of torque before some people started questioning the internals. So de-stressing this engine, then increasing it's power should result in a reliable upgraded engine. |
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03-20-2008, 09:00 PM | #19 | |
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2019+ BSM M2C 2011-2012: VO 1M Coupe, many toys, Evolve Stage 3. 2008-2011: 135i M Sport Le Mans Blue / Lemon / HGSL. Evolve OBD remap - 390bhp. Also in the family: X3 M40d / Audi S4 (V8)
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03-20-2008, 09:18 PM | #20 | |
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But comparing dynos is hard to do, on top of that many people still refuse to use SEA corrections. But it is safe to say with 360whp using SEA correction is very close to 400bhp. |
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03-21-2008, 12:02 AM | #21 | |
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http://www.e90post.com/forums/showthread.php?t=126918 here's the setup: 2007 335 6MT ~30k miles PROcede v2.1 beta (with built-in o2 simulators) Riss catless dp Vishnu cat-back Dual cone filter intake Stock bypass valves, stock intercooler, etc,. its not a question of you believing my math, its a question of you believing the facts. -Chris
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03-21-2008, 06:30 AM | #22 |
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Chirs, I guess I'm just on the sceptical / disbelieving end of a journey - maybe I don't want to beleive such power figures are so easily attainable so I don't find myself dissapointed in the near future!
I see you're using 20% as the transmission loss figure in most of your calcs. Browsing round the forum you posted a link to I've seen figures from 13% to 17% used in their calcs. Does the 135i have higher losses than the 335i? In your example above you say 380whp translates into 465bhp at the crank - would that not be nearly 23% transmission loss? I think what my uncertainty boils down to is lack of clarity regarding the losses - I see lots of estimation, not absolute hard facts, but given no-one is ever going to bench test their engine in the real world, I accept it's the best we have Be great to see an agreed loss figure being used though, as there is a big gap betwwen 17% and 23%, especially as power figures rise... Cheers, Clive
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