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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Another V2.0.2 $.02



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      12-08-2007, 12:08 PM   #23
Sniz
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Originally Posted by SGP335i View Post
Hey guys, i'm stupid what is an FMIC?? Keep hearing this
Front Mount InterCooler

You already have one from the factory, but normally when you see the term used its referring to an aftermarket setup like I have. I'm just North of you in Urbana if you ever want to see it in person for some reason.


RE: V2.0.2 - I will FINALLY be able to take my car out of the garage today and blast around the highways of Frederick/Baltimore. Rt. 70 here I come!! Can't wait to feel the power as it adapts. I've only put 5 miles or so on it...at most since the install Tuesday night.
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      12-08-2007, 01:42 PM   #24
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I LOVE my V2...

Scored a 330-340 Wheel horse power (399.9 ! BHP) with V2 and everything else STOCK on my 6AT E93

SJ
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      12-08-2007, 02:20 PM   #25
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I LOVE my V2...

Scored a 330-340 Wheel horse power (399.9 ! BHP) with V2 and everything else STOCK on my 6AT E93

SJ
Very nice number
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      12-08-2007, 02:24 PM   #26
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yeah nice numbers indeed!!! Can u show the dynos for those numbers?
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      12-08-2007, 02:41 PM   #27
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Linear torque output is usually deceptive in how quick it is making you accelerate through the gears. Personally, the most "disappointing" (if I may use that word here) characteristic of the stock N54 is the significant drop in torque from 5500->redline.

If the tuners can give us remedies to this, as V2 has (and others to a lesser extent) I'd gladly take that over more midrange grunt any day. And that's not even considering the fact that the cars have no LSD, and most folks will never replace their runflats. Those 2 things are not your friend when you're on the loud pedal in sharp angle cornering.

Linear delivery > all. Why do you think the E46 M3's engine is worshipped worldwide?
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      12-08-2007, 03:16 PM   #28
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Quote:
Originally Posted by Sniz View Post
Front Mount InterCooler

You already have one from the factory, but normally when you see the term used its referring to an aftermarket setup like I have. I'm just North of you in Urbana if you ever want to see it in person for some reason.


RE: V2.0.2 - I will FINALLY be able to take my car out of the garage today and blast around the highways of Frederick/Baltimore. Rt. 70 here I come!! Can't wait to feel the power as it adapts. I've only put 5 miles or so on it...at most since the install Tuesday night.
I take it that this wasn't on a Dynojet, right?

Love to hear more results if you have them. Specifically, how much a stock car put down on that dyno.

-shiv
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      12-08-2007, 03:21 PM   #29
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Quote:
Originally Posted by ndahbar View Post
Linear torque output is usually deceptive in how quick it is making you accelerate through the gears. Personally, the most "disappointing" (if I may use that word here) characteristic of the stock N54 is the significant drop in torque from 5500->redline.

If the tuners can give us remedies to this, as V2 has (and others to a lesser extent) I'd gladly take that over more midrange grunt any day. And that's not even considering the fact that the cars have no LSD, and most folks will never replace their runflats. Those 2 things are not your friend when you're on the loud pedal in sharp angle cornering.

Linear delivery > all. Why do you think the E46 M3's engine is worshipped worldwide?
If you get a chance, drive a v2.0.2 car. Not only is the power delivery objectively linear at WOT (as seen on dyno graphs), it feels almost like an electric motor on the road in that you have so much partial throttle modulation as well as a very intuitive torqueedal response relationship. We spent so much time mapping this out. It wasn't enough to make the most horsepower but also to make every single hp as useable as possible for the driver. Whether his a straight line street racer or a roadracing 'hot shoe'. We still have some stuff we are working on for the next revision but v2.0.2 should be enough to make everyone happy.

Shiv
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      12-08-2007, 03:25 PM   #30
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Dyno results, plots, comparisons from a UK Forum Dyno Day meet earlier today..

All figures calculated at crank, with 12.7% loss on MT, 15% on AT.
Run on a Dyno Dynamics setup, calibrated in shootout mode, no correction.

Featuring 120d, 130i, 320si, 330i, 335d, 335i, 335i with V2 Procede!!!!


http://www.e90post.com/forums/showthread.php?t=100276



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      12-08-2007, 08:30 PM   #31
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Quote:
Originally Posted by shiv@vishnu View Post
If you get a chance, drive a v2.0.2 car. Not only is the power delivery objectively linear at WOT (as seen on dyno graphs), it feels almost like an electric motor on the road in that you have so much partial throttle modulation as well as a very intuitive torqueedal response relationship. We spent so much time mapping this out. It wasn't enough to make the most horsepower but also to make every single hp as useable as possible for the driver. Whether his a straight line street racer or a roadracing 'hot shoe'. We still have some stuff we are working on for the next revision but v2.0.2 should be enough to make everyone happy.

Shiv
Map revision or Procede revision?
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      12-08-2007, 09:12 PM   #32
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Quote:
Originally Posted by ndahbar View Post
Linear torque output is usually deceptive in how quick it is making you accelerate through the gears.
+1

I recall reading on a Listerv some fifteen years ago or so about a T-Type owner's experience after making some tuning changes. The changes were to provide a more linear response. He knew he had lost some peak torque but when he took his first pass down the track, he knew he had lost time. But when he picked up his slip he had picked up 3 tenths even though it felt slower.

Or, as an example taken from Vettnet.org:

Quote:
At The Dragstrip
OK. Back to carland, and some examples of how horsepower makes a major difference in how fast a car can accelerate, in spite of what torque on your backside tells you :-).
A very good example would be to compare the current LT1 Corvette with the last of the L98 Vettes, built in 1991. Figures as follows:


Engine Peak HP @ RPM Peak Torque @ RPM

------ ------------- -----------------

L98 250 @ 4000 340 @ 3200

LT1 300 @ 5000 340 @ 3600


The cars are geared identically, and car weights are within a few pounds, so it's a good comparison.
First, each car will push you back in the seat (the fun factor) with the same authority - at least at or near peak torque in each gear. One will tend to *feel* about as fast as the other to the driver, but the LT1 will actually be significantly faster than the L98, even though it won't pull any harder. If we mess about with the formula, we can begin to discover exactly *why* the LT1 is faster. Here's another slice at that formula:


Horsepower * 5252

Torque = -----------------

RPM


If we plug some numbers in, we can see that the L98 is making 328 foot pounds of torque at its power peak (250 hp @ 4000), and we can infer that it cannot be making any more than 263 pound feet of torque at 5000 rpm, or it would be making more than 250 hp at that engine speed, and would be so rated. In actuality, the L98 is probably making no more than around 210 pound feet or so at 5000 rpm, and anybody who owns one would shift it at around 46-4700 rpm, because more torque is available at the drive wheels in the next gear at that point.
On the other hand, the LT1 is fairly happy making 315 pound feet at 5000 rpm, and is happy right up to its mid 5s redline.

So, in a drag race, the cars would launch more or less together. The L98 might have a slight advantage due to its peak torque occuring a little earlier in the rev range, but that is debatable, since the LT1 has a wider, flatter curve (again pretty much by definition, looking at the figures). From somewhere in the mid range and up, however, the LT1 would begin to pull away. Where the L98 has to shift to second (and throw away torque multiplication for speed), the LT1 still has around another 1000 rpm to go in first, and thus begins to widen its lead, more and more as the speeds climb. As long as the revs are high, the LT1, by definition, has an advantage.

Another example would be the LT1 against the ZR-1. Same deal, only in reverse. The ZR-1 actually pulls a little harder than the LT1, although its torque advantage is softened somewhat by its extra weight. The real advantage, however, is that the ZR-1 has another 1500 rpm in hand at the point where the LT1 has to shift.
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      12-09-2007, 11:15 PM   #33
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Car has adapted very nicely! The extra horsepower definitely comes through after the adaptation period. I can feel all 4 tires almost chirp shifting up from 1st to 2nd. Great product! Can't wait to get it onto a dyno, hopefully the RPI guys have an AWD dyno when I do my FMIC install next monday.
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      12-10-2007, 01:02 AM   #34
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Quote:
Originally Posted by Sniz View Post
Front Mount InterCooler

You already have one from the factory, but normally when you see the term used its referring to an aftermarket setup like I have. I'm just North of you in Urbana if you ever want to see it in person for some reason.


RE: V2.0.2 - I will FINALLY be able to take my car out of the garage today and blast around the highways of Frederick/Baltimore. Rt. 70 here I come!! Can't wait to feel the power as it adapts. I've only put 5 miles or so on it...at most since the install Tuesday night.


Nice, I just had shoulder surgery so I can't even drive mine much less install my 2.02... We should get together and play one of these days
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