10-15-2014, 12:00 PM | #46 | |
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Maybe Dinan can clarify this or someone who knows more. Would be scary if our limited torque is only 331ft/lbs torque |
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10-15-2014, 12:03 PM | #47 |
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Right, it would be scary if it were true, but it obviously can't be. The M235i, stock, puts down equal to or more then that by ALL ACCOUNTS. Dinan, whom so many people seem have some godlike prestige towards, measured STOCK OUTPUT at 379 ft-lbs.
Again, BMW would not make/use a transmission on this car that would have a real life safety factor or 1.0 or less and if you had any sense of engineering you'd know what that means!! P.S. It would make infinite more sense that if there is no other existing transmission compatible with this cars interface (or if BMW is using a transmission specifically designed for this car) than the only logical conclusion would be the existing transmission which has a rating of 553 ft-lb or a factory of safety of 1.7-ish is what is used on the M235i.
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10-15-2014, 12:12 PM | #48 |
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Start a new transmission thread it's worth it imo. I tried to find out limits on trans and block internals and the responses were minimum.
This is another reason I went with dinan. If something blows up within the first 4 years the hope is that it's covered. |
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10-15-2014, 12:18 PM | #49 |
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the car stock is 330...would have to be the 750nm... always some over engineering
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10-15-2014, 12:57 PM | #50 |
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Well according to the BMW USA site the cars max output tq is 450nm and according to the trans manufacture the max input is 450nm. So BMW didn't screw up they just didn't leave any headroom. Hence my concern.
Last edited by MyM235i; 10-16-2014 at 12:21 AM.. |
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10-15-2014, 01:19 PM | #51 | |
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http://www.realoem.com/bmw/showparts...32&hg=24&fg=05
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10-16-2014, 06:04 PM | #53 | |
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The 450nm rating on the transmission is accurate to what the manufacturer claims. That said all manufacturers tend to underrate their products for whatever reason (usually legal). Regardless of what the real limits of the transmission are if you are running a Dinan tune and if for some reason it does happen to break, we will pay for it. Simple as that. We stand behind our product and that's evidenced by being the only aftermarket company that offers a factory matching warranty. |
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10-16-2014, 09:47 PM | #54 | |
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10-16-2014, 11:03 PM | #55 |
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Also not to hijack this thread further away from its original purpose but I wanted to point to a post we just made in the M5 forum that I think may help explain our box in a bit more technical detail. Seeing as how the 2 series forum was pretty intensive on questions about our tuning solution in general I thought it would be pertinent to people here as well.
You can read the entire thread if you want but the synopsis is that a user posted his review of the DINANTRONICS performance tuner and Steve Dinan took notice and felt the need to explain why the reviewer noticed the changes he did. Link to the last page of the thread below. http://f10.m5post.com/forums/showthr...1008125&page=8 |
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10-17-2014, 07:21 AM | #56 |
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Having tried Stage 1 in my M235i (two-wheel drive) I can say the car does feel more lively than stock. Power delivery is uniformed as described by Steve Dinan in the other forum post.
Why I switched back to a cheap piggyback (aFe Scorcher) was the instant increase in torque over the Dinan system and more peak HP. These are what was most important to me, and the fact I can simply unplug the box in less than 5 minutes to return back to stock. I don't doubt the Dinan system will be a better lasting performance upgrade. Personally, I will be done with my M235i in 3 years or less and really not worrying about it as it will never get over 25K miles during my ownership. Last edited by Delnari; 10-17-2014 at 03:57 PM.. |
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10-17-2014, 01:03 PM | #57 | |
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So having both you feel the scorcher delivers more power?
The dinan s1 shows 44hp and 100tq gain over advertised bmw numbers. Did you dyno with both tunes or are you going by a butt dyno? One other thing that comes to mind. Dinan (a well know brand) seems to be continuing their efforts to get the s1 to optimal power. I recently had a software upgrade performed on my car. Being that there is still r&d going on how will guys with the cheaper piggybacks receive updates? Will AFE send you updates to the tune? As a car lover I must say even though I may not own the car in 3 years I still take care of my car. It sucks for the next guy to receive an abused car. Also take into consideration that if something happens to your car while in your possession and the dealer finds out you had a piggyback they may black list your car (by vin). If youre leasing this may legally impact you Quote:
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10-17-2014, 02:59 PM | #58 |
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If Dinan's Stage 2 offering puts us more squarely at a minimum of 350 horsepower and 390 ft-lbs to the wheels, they have a buyer in me. I've already experienced 360whp/400wtq with the JB4 and I am looking for driveability and stock-like feel over all.
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10-17-2014, 04:17 PM | #59 |
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Again, the Dinan Stage 1 gives you more smooth power over stock and that is the truth! Having a system the can be updated with firmware flashes is a plus (JB4 offers this as well). For me, the amount of power delivered even with the added features for $2K+ was not acceptable, but that is only my personal view.
The aFe module has no update feature and no warranties against damage to the vehicle. It is not as extreme as Stage 2 systems currently available, but it has more peak HP/TQ over the Dinan Stage 1. My car is a ton more fun with it and cost me less than 1/4 the cost of Dinan's system. It probably is slowly wearing my car's engine faster than not having it, again not an issue for me. Last edited by Delnari; 10-18-2014 at 10:19 AM.. |
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10-17-2014, 06:09 PM | #60 |
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Unfortunately those figures aren't realistic...but what about your setup is lacking "driveability and stock-like feel over all?" Genuinely curious, as my car with the same mods and more power (depending on fuel/map) does not have a single driveability flaw. During standard driving around town or on the highway under very light throttle, it feels no different than stock.
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10-17-2014, 06:56 PM | #61 | |
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I suspect the trans can handle it and will likely get a tune shortly after receiving the car. I will keep a close lookout on here to see if any trans issues pop up. Thanks for the response! |
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10-17-2014, 06:58 PM | #62 | |
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10-17-2014, 08:52 PM | #63 | |
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10-31-2014, 07:05 AM | #64 |
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Did OP get caught up with life and not get to dyno or did he dyno with non-favorable results.. again? 3 weeks later..
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10-31-2014, 07:21 AM | #65 | |
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In Austin for the F1 race... I'll upload the sheets when I return home, I am keeping the Dinan, did find something interesting though the BMS intake I did two separate runs, no heat soak, I was basically on the Dyno all day so there was no rush and plenty of breaks in between I lost five torque and 5 hp on each run. So that came off for all the other runs. |
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10-31-2014, 03:04 PM | #66 |
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Just to clarify OP's testing which he used the same Dynanometer I used for all my runs in Sterling, VA. He saw a consistent drop in peak HP/TQ when running the BMS intake. The loss was about 5 peak HP and 5 peak TQ. Will wait for his posting of the sheet(s) to see how the numbers outside the peaks were.
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