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      07-22-2008, 08:06 PM   #1
KonigsTiger
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466bhp Chipped E92 M3

OK guys, after some time, I finally got a copy of the dyno for my chipped E92 M3, 466 bhp DIN and 338 lbs/ft of torque. Here is the dyno and pics (by the way, it does pull much harder and the difference is real):
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      07-22-2008, 08:16 PM   #2
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      07-22-2008, 08:31 PM   #3
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Wow, what a big improvement. How are your 1/4th mile times looking?
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      07-22-2008, 08:32 PM   #4
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Wow, the torque curve is even flatter! Significant improvement at mid-range.

A few questions:

1. The list of drivetrain mods that were installed before the modded dyno run.
2. The "loss factor" entered into the dyno so that we can calculate whp and wtq.
3. When exactly the two runs were done? (dates and mileage on the car)
4. Ambient temp, pressure, humidity during the two runs? (we can figure this out from the dates and location if you don't have it)
5. Were the runs done on the same dyno?

Many thanks for posting the info!
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      07-22-2008, 08:45 PM   #5
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I would be interested in the mods.

Looking at the graphs I am sceptical at the equal lift of the Torque curve and hence power curve over stock ?

It does look like the corrections are different for both graphs. I am not sure how your mods can lift the torque so consistently ?
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      07-22-2008, 09:00 PM   #6
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Quote:
Originally Posted by lucid View Post
Wow, the torque curve is even flatter! Significant improvement at mid-range.

A few questions:

1. The list of drivetrain mods that were installed before the modded dyno run.
2. The "loss factor" entered into the dyno so that we can calculate whp and wtq.
3. When exactly the two runs were done? (dates and mileage on the car)
4. Ambient temp, pressure, humidity during the two runs? (we can figure this out from the dates and location if you don't have it)
5. Were the runs done on the same dyno?

Many thanks for posting the info!

Same dyno same day yes, the rest, I will find out.
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      07-22-2008, 09:03 PM   #7
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Quote:
Originally Posted by IWC Doppel View Post
Looking at the graphs I am sceptical at the equal lift of the Torque curve and hence power curve over stock ?

It does look like the corrections are different for both graphs. I am not sure how your mods can lift the torque so consistently ?
Power numbers are legit. The torque gains decrease significantly at higher rpms so the power gains remain more or less the same at those rpms.

I read the tq numbers for the mod and stock cases as best as I can and calculated power based on those:

Stock
power torque rpm
276 290 5000
331 290 6000
393 295 7000
427 280 8000

Modified
power torque rpm
314 330 5000
377 330 6000
433 325 7000
465 305 8000

The calculted power numbers match the one's on the chart.
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      07-22-2008, 09:03 PM   #8
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Quote:
Originally Posted by IWC Doppel View Post
I would be interested in the mods.

Looking at the graphs I am sceptical at the equal lift of the Torque curve and hence power curve over stock ?

It does look like the corrections are different for both graphs. I am not sure how your mods can lift the torque so consistently ?
Yea, I agree!! But, what I can say is what I feel and what these guys showed me and the engines they work on. So, even if these things are not for some reasons correct, the car is a tad over 20kph faster on a long streight where I used to do almost 240 I'm moving above 260. The car pulls harder from the start. Feels great really!!! No kiding.
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      07-22-2008, 09:12 PM   #9
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Originally Posted by BMW-M-Mexico View Post
Yea, I agree!! But, what I can say is what I feel and what these guys showed me and the engines they work on. So, even if these things are not for some reasons correct, the car is a tad over 20kph faster on a long streight where I used to do almost 240 I'm moving above 260. The car pulls harder from the start. Feels great really!!! No kiding.
See my post above. There is no discrepancy between the torque and power numbers on that chart.
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      07-22-2008, 09:18 PM   #10
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Quote:
Originally Posted by BMW-M-Mexico View Post
Yea, I agree!! But, what I can say is what I feel and what these guys showed me and the engines they work on. So, even if these things are not for some reasons correct, the car is a tad over 20kph faster on a long streight where I used to do almost 240 I'm moving above 260. The car pulls harder from the start. Feels great really!!! No kiding.
That is a solid test if you are pulling higher road speeds consistently under the same circumstances.
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      07-22-2008, 09:27 PM   #11
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Quote:
Originally Posted by lucid View Post
See my post above. There is no discrepancy between the torque and power numbers on that chart.
Not sure I follow you here. I would expect any increase in power for a pulley system to be in relation to engine rpm, either linear or otherwise.

I remember porting crank cases in 911 engines they would show virtually no hp gains at 3,000 and 20hp + at 7,000 rpm it increased substantially with rpm (in this case it was not linear)

For the pulleys I would of expected say 1-2 hp at 3,000 and maybe 6-8 at 8,000 ? Which I would be happy with !

Still confused by the low end gains

BTW not sure what hp the air con consumes ? It might be worth doing a aircon on and aircon off bum dyno to see what the results are in feel
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      07-22-2008, 09:39 PM   #12
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Quote:
Originally Posted by IWC Doppel View Post
Not sure I follow you here. I would expect any increase in power for a pulley system to be in relation to engine rpm, either linear or otherwise.
The equation that relates power to torque is simple:

Hp = ( Tq x rpm ) / 5252 as long as Tq is measured in lb x ft

So if the tq gains decrease, but the rpms increase, the power gains can be relatively stable, which is what is happening at higher rpms.

At the low rpms, the same torque gain will yield less power gain simply because the rpms are low (as the equation indicates).

You can read the tq values from the chart, plug them into the equation above, obtain power, and compare calculated values to values on chart, which is what I've done. The numbers match.

The real question is the loss percentage entered into the dyno.

I don't think he's done the pulleys. He's reflashed the ECU and installed the new exhaust. Those I know he did for sure. Anyway, he'll tell us and we'll know more.

Different mods will yield different torque gains along the rpm range.
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      07-22-2008, 09:42 PM   #13
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Quote:
Originally Posted by lucid View Post
The equation that relates power to torque is simple:

Hp = ( Tq x rpm ) / 5252 as long as Tq is measured in lb x ft

So if the tq gains decrease, but the rpm increase, the power gains can be relatively stable, which is what is happening at higher rpms.

You can read the tq value of the chart, plug them into the equation above, obtain power, and compare calculated value to value on chart, which is what I've done. The numbers match.

The real question is the loss percentage entered into the dyno.

I don't think he's done the pulleys. He's reflashed the ECU and installed the new exhaust. Those I know he did for sure. Anyway, he'll tell us.
I can add to this that the guys did say that stock curve had a rather large number of dips etc... that they fix. I will try and get you answers for the questions above, but again, the car is definetly faster from the get go. Its fun as hell to drive!! lol!
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      07-22-2008, 10:25 PM   #14
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wow BMW-M-MEXICO! Impressive! Do tell about all the performance mods
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      07-22-2008, 10:58 PM   #15
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What software is it? I can't believe you're showing that much more power. I need that now.
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      07-22-2008, 11:16 PM   #16
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This sounds almost too good to be true, that's a large bump from a chip, the motor is making about 116hp/liter...please be true.
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      07-22-2008, 11:17 PM   #17
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Quote:
Originally Posted by cowmoo32 View Post
What software is it? I can't believe you're showing that much more power. I need that now.
yes give it to me
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      07-22-2008, 11:57 PM   #18
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Any impact on MPG? How's the mileage?
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      07-23-2008, 03:58 AM   #19
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Those are some impressive numbers.

So gruppe intake, exhaust and chip?
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      07-23-2008, 07:10 AM   #20
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Quote:
Originally Posted by cowmoo32 View Post
What software is it? I can't believe you're showing that much more power. I need that now.
+1
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      07-23-2008, 08:40 AM   #21
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woah... looks great.
how was the install like?

cheers
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      07-23-2008, 10:55 AM   #22
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Quote:
Originally Posted by ihyln View Post
wow BMW-M-MEXICO! Impressive! Do tell about all the performance mods
In terms of engine mods, the only changes are Gruppe-M intake, ECU reflash and Exhaust. Aero mods include CF ACS front diffuser, CF 3d rear splitter, CF Vorsteiner CLS boot lid that also reduces weight. Suspension mods are HRE 897R light weight wheels with PS2’s, lowering springs and ACS rear strut bar. On the way is the BBK that I hope to god is here sometime this week or next week.

In general, I feel the car is much faster than it used to be right from the start, I do really enjoy driving it!!


Quote:
Originally Posted by cowmoo32 View Post
What software is it? I can't believe you're showing that much more power. I need that now.
The software comes from these guys: http://www.delriopower.com/ See below!!

Quote:
Originally Posted by consolidated View Post
This sounds almost too good to be true, that's a large bump from a chip, the motor is making about 116hp/liter...please be true.
The software comes from these guys: http://www.delriopower.com/ and costs about US$2,000.00 I have visited there facilities and Witnessed how they build engines etc…. last week they completed 5 Indy type engines. They have most of the stuff build in Europe or the USA to their specs but the important thing is that they do know engines, prepare lots of race engines and have a staff the does lots of research on this stuff. They are not at all good and customer service but they do know what they do.

Quote:
Originally Posted by rickc View Post
Any impact on MPG? How's the mileage?
Yes, the MPG is a LOT WORSE than it was. Donīt really know by how much but since I am always steping on it (as I did before) the gass tank certainly lasts less. This is very consistent with what they said, I said I wanted power and did not care for fuel efficiency. They also increased the rev limiter a bit and well as delimited top speed. The reason the increased the rev limiter (to 8,500 RPM) is not because it will make more power, but because it helps make shifts at the limit a bit easier w/o harming the engine due to the quality of the local fuel.

Quote:
Originally Posted by edlms View Post
woah... looks great.
how was the install like?

cheers
Not sure what you mean by this but it only took a day with the car there to due the ECU reflash, dyno and delivery the next day.
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