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03-29-2008, 02:32 PM | #68 |
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I think we're talking about two different things. An evo: You stomp the gas and get zero hp until higher rpm.. then the one turbo hits hard. The dinan software: You go half throttle and get slightly less boost because the throttle is opening less than stock. You stomp the 135i pedal and the two small turbos will spool up fast.
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03-29-2008, 02:42 PM | #69 | |
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03-29-2008, 02:56 PM | #70 |
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If it truly is an issue with thottle response then fine. Many people have described the problem as being associated with rpm. Mashing down the pedal from 5 mph causes a big surge at 3000 rpms. That sounds awfully evo-ish and not related to throttle response. Which is it?
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03-29-2008, 04:15 PM | #71 | |
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03-29-2008, 05:10 PM | #73 |
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just tested this and it is a throttle depression issue and NOT a lack of torque down low. You just have to floor it. Torque comes well before rpms increase.
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03-29-2008, 05:20 PM | #74 |
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03-29-2008, 06:25 PM | #75 |
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Hehe.. throttle by wire has been out for quite a few years. I've owned three cars so far that had it.. and two of the turbo cars also had aftermarket software upgrades. I'm not concerned about it at all with dinan. I'm sure one fine tune software adjustment is all they need to make everyone happy.
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03-29-2008, 06:52 PM | #76 | |
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It's called "throttle response"! Since BMW's don't actually have a mechanical linkage to an actual throttle, how deep you press into your gas pedal can be programed to do more or less. Dinan programmed the throttle to be linear, meaning it is like a flat ramp, while BMW had it more like an arc. Nothing is being changed with the engine or the gas pedal, only how it reacts to your input. |
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03-29-2008, 08:07 PM | #77 |
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well i'm really liking the Dinan tune now. it's just a matter of developing a heavier foot.
on the upside, the less sensitive throttle allows for greater control and smoothness with an increase in power. when you want that butt-in-the-seat feel just go close to WOT. it's pretty darn good just the way it is. i'd consider the update software but it certainly isn't a necessity from my point of view. ymmv.
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03-30-2008, 08:37 AM | #78 | |
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Or are you saying that the boost is reduced to 10-15% when not WOT? In that case, then shouldn't this problem be non-existant in a 'race' launch when users ARE going WOT? That doesn't seem to align with previous posts with people launching.. perhaps they weren't being aggressive enough? :iono: Please explain to me, as I really am confused here.
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03-30-2008, 08:43 AM | #79 |
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03-30-2008, 08:43 AM | #80 | |
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It has nothing to do with it! Coolguy is just trying his best to describe what is taking place and is mixing apples and oranges is all. BTW, (again) the "lag" they are wrongly labeling is not engine lag, but "throttle response". They are saying that with the Dinan tune, it also remaps the throttle to be less responsive, because of the added torque. Many people didn't like this so Dinan will be releasing a newer tune that adds a more stock-like throttle response. |
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03-30-2008, 12:00 PM | #81 |
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There is no lag if you mean that lag is a delay between pedal depression and engine response. Engine response is immediate. The pedal just isn't as jumpy and sensitive ... but all the numbers are there. All I'm saying is that you learn to have a heavier foot. The engine sounds great (mean) and there's amazing power. No lag by my definition. :w00t:
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03-30-2008, 01:14 PM | #82 |
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Personal opinions aside, for the cost which is the better performance tune: the turbo tuner ($595) or the Dinan reflash ($1995 + labor). I realize that the reflash has better stats, but are they $1500 better and can you tell the difference while driving. I want to be sure that my money is spent the best way possible. Any help is appreciated.
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03-30-2008, 03:02 PM | #83 | |
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03-31-2008, 12:31 AM | #84 |
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This may be a lil off subject and I'm sorry, but does any one know if they give you a discount on the Dinan mod at the dealership if you're a BMWCCA member?
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03-31-2008, 09:54 PM | #85 | |
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04-01-2008, 01:18 AM | #86 |
Im gonna do that for sure
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I was thinking about doing this, but Im going to wait a little longer before I go ahead.
I was planning on taking the 2 small turbos off and putting one big one on, and then of course running different software to support this setup |
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04-01-2008, 04:39 AM | #87 |
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Having been in the car for a few days, experiencing the not-inconsiderable torque, I am not convinced an old fart such as myself is realistically 'up to the task' of controlling even more power than what the car delivers right 'out of the box'. There are times when the fire-breathing little monster scares the hell out of me. In a good way.:wink:
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04-01-2008, 05:54 AM | #88 | |
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What outcome are you trying to achieve in doing that mod? |
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