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03-23-2010, 10:24 PM | #1 |
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dinan 4.10 diff
any opinions on this product, i was offered a great price and im going to be pulling the trigger on it this week, id like to get some feedback if anyone has it and how much of a difference it really makes
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03-23-2010, 11:27 PM | #4 |
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should have it on in a week or so, i will post back
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03-24-2010, 12:00 AM | #5 |
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Check out this post - http://www.m3post.com/forums/showpos...0&postcount=60 - car test simulation software suggests the stock FD ratio is optimal in terms of the quarter mile anyway...
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03-24-2010, 12:19 AM | #6 |
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thanks for the link, i only read through the first page as i didnt see anything to do with the 4.10 gear for the 6mt, thats what im looking for. ive heard great things from people who did a diff upgrade in the e46 i would really like to know if anything negative has come from this
if nobody can chime in i guess ill be the test dummy |
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03-24-2010, 12:26 AM | #7 | |
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So it will "feel" faster in terms of butt dyno but the reality is it very much depends on the scenario as to whether you will get better performance or in some cases worse performance. |
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03-24-2010, 12:40 AM | #8 |
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i understand what your getting at, i have read that its basically a "feel good" butt dyno and that it wont give it any numbers on the dyno, but if it realistically does make the car faster, say stock m3 vs m3 with 4.10s and the 4.10s pull on the stock m3 then it actually did make the car faster and not just feel faster, along with this mod i do plan on doing the stroker so im sure it will all contribute to making this car more of a monster
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03-24-2010, 12:46 AM | #11 | |
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http://www.m3post.com/forums/showthread.php?t=287873 I read it the other day - starts out on a DCT diff question then broadens out in to a conversation on diffs in general for both transmissions. There are some strong opinions involved and a bit of drama for good measure, but an informative and entertaining read! If you're considering the mod - you shoud read it. I found the debate interesting because everyone seems to want a little something different from their cars depending on how they drive and where they drive (city, hwy, track, autocross, drag etc) In my opinion, the diff you choose can and should match your driving style. So there is no "right" solution, but one that fits your requirements and maybe not someone else's |
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03-24-2010, 02:54 AM | #12 | |
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What would you consider your yardstick for performance? Say a rolling start from 30mph in 2nd gear? |
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03-24-2010, 04:46 PM | #15 | |
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-So that you can get results and compare them with -2 different cars?-So that you can have someone tell you his very expensive mod really "feels" faster? -So that you can make some other non apples to apples comparison? Sorry, a bit harsh, but simulation works; it is how your entire car, no matter what you drive was engineered and developed! It takes the guess work out of a many types of mods. You should trust it more. Have you seen Pencilgeeks simulation results vs. test? Have you seen all of the other test vs. simulation results here in the forum? I'd be happy to help you understand it more (no sarcasm there - a genuine offer).
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03-24-2010, 05:56 PM | #16 |
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Swamp I browsed threw this thread last night but way to tired to post.
Let me get this right in lamens terms you are saying in a mt a 4.10 is going to end up hurting performance? I know it will hurt top speed and whatnot but how will it hurt performance. I only ask because I plan a 3.62 on my dct and i don't see how performance is going to be hurt other then my top speed. Please enlighten me as I am somewhat green on the topic.
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03-24-2010, 09:16 PM | #17 |
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+1 every diff i have had helped, never hurt the performance. i lost a little top end mph and the rpm was a tad higher but thats it. unless you were reffering to that as losing power. for what i gained in acceleration it was worth what i lost up top
i will write a review after i get mine and do the 1,200 mile break in on it and can go past 5500 rpm, no sense writing one bf that
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03-24-2010, 10:12 PM | #18 |
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oh no i forgot about the break in guess im going to have to break it in really fast, swamp, ive seen lots of people spend tons of money on bumpers and cosmetic mods that look worse then stock, id rather have it in performance, as far as i can see everyone chiming in saying its not worth it doesnt have it, ive talked to one person who does a while ago and they said it was the best money theyve spend on there e92, also alot of e46 owners have done this mod and all of them have nothing but great things to say about it
im not trying to start a fight at all, but what i was really looking for is for someone who has done this mod and has had a negative experience with it thanks for anyone chiming in and giving your input |
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03-25-2010, 12:19 AM | #19 | |
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I was heart set on a 3.62 diff for my DCT, even armed with the knowledge I have around negligible raw performance gains. What put me off was the fact that some DCT users have reported the engine shifting to RPMs close or exceeding redline in automatic mode. Of course you won't get that with the MT differential, so as long as you are happy that in a point-to-point hard out race the 4.10 diff probably won't make you any faster, then go for it. I certainly believe the driving experience will be better with the 4.10 diff - whether that is worth thousands of dollars, well that comes down to the individual person. Certainly many people won't pay thousands of dollars for something that doesn't give a measurable performance improvement. Finally just so you are aware of this, you can achieve exactly the same outcome of a higher ratio FD by making your wheels smaller in diameter (reducing diameter of wheels increases torque applied at the wheels, but because circumference is reduced, a proportional decrease in vehicle speed at given engine RPM also occurs). |
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03-25-2010, 12:24 AM | #20 |
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^^ thanks, your on point tho, im really doing this for more driving pleasure as silly as it sounds, im not a 1/4 kinda guy so i guess i know what im in for, i ordered the diff today so i should have it within the next few weeks, ill have a full right up, im sure i will be happy
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03-25-2010, 01:43 AM | #21 | |||
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Again no such thing as a free lunch. Quote:
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03-25-2010, 02:35 AM | #22 |
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^ Each to his own - at least the OP is better informed now and is comfortable in his decision...
Personally I wouldn't do it on a MT car just because extra gear changes do penalize you. I would do it on a DCT car if the software was smart enough to adjust the shifting behaviour (based on engine RPM rather than speed - which is does for the most part with the DCT but clearly not in all situations based upon some user reports)... |
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