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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 > FIRST BMW Performance Power Kit Review and Test Drive



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      09-04-2009, 12:54 PM   #133
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Quote:
Originally Posted by Gio72 View Post
Beautiful picture!
Where did you take it?
Timmelsjoch. See link below. http://www.e90post.com/forums/showthread.php?t=31829

Where is yours?
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      09-04-2009, 01:10 PM   #134
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Originally Posted by stressdoc View Post
Timmelsjoch. See link below. http://www.e90post.com/forums/showthread.php?t=31829

Where is yours?
Oh, yes, Passo Rombo (Timmelsjoch), beautiful road with fantastic view, but I've never been there, maybe one day!
My picture was taken just a few km from Cortina at Passo Falzarego, a very famous ski resort!
I love that montains and I'm very lucky because I go there almost every weekend (only about 160km-100miles far from Venice, where I live and work )! By the way, there you can find fantastic road for 335 and, in general, for every well-powered car!
Now I've got dinner, have a nice day (afternoon )!
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      09-09-2009, 03:30 AM   #135
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Phew ! I finally had the air ducts installed today Thanks to M3EST user on this forum, I was able to convince the dealer into ordering the correct air duct set. For the e90 M-Sport LCI, the air duct set is 5174 2157 672. The set for the e90 M-Sport (which has brake air ducts) is installed by cutting some rectangular region from the brake air duct and joining it with the radiator air duct.

There are at least 10 different air duct sets for the Power Kit. I think it was an extremely time consuming task for BMW to design all these. Given this, I conclude that additional water cooling for the N54 engine is mandatory if long term reliability is a goal.

Even though everybody jumped on the idea of upgrading the fan with the Power Kit fan for better colling, I think that its simpler (and not a lot more expensive) to install the supplemental radiator and air ducts. This is because no additional software coding is necessary for this to work. as opposed to the new fan where the coding is necessary. So you can do this as a DIY, not needing to mess with the dealer.
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      09-09-2009, 05:10 AM   #136
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Quote:
Originally Posted by cstavaru View Post
Phew ! I finally had the air ducts installed today Thanks to M3EST user on this forum, I was able to convince the dealer into ordering the correct air duct set. For the e90 M-Sport LCI, the air duct set is 5174 2157 672. The set for the e90 M-Sport (which has brake air ducts) is installed by cutting some rectangular region from the brake air duct and joining it with the radiator air duct.
Would be great if you could shoot some pictures once you have it installed, if possible.

Quote:
There are at least 10 different air duct sets for the Power Kit. I think it was an extremely time consuming task for BMW to design all these. Given this, I conclude that additional water cooling for the N54 engine is mandatory if long term reliability is a goal.

Even though everybody jumped on the idea of upgrading the fan with the Power Kit fan for better colling, I think that its simpler (and not a lot more expensive) to install the supplemental radiator and air ducts. This is because no additional software coding is necessary for this to work. as opposed to the new fan where the coding is necessary. So you can do this as a DIY, not needing to mess with the dealer.
Now we just need the part number for that additional radiator, and a confirmation that BMW indeed sells these separately...!

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      09-09-2009, 08:24 AM   #137
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Originally Posted by cstavaru View Post
It's the torque AT THE WHEELS. Even with 12% loss you obtain 470Nm at the crank. Plentiful

Oh, and by the way, some more observations: my girlfriend (no cars knowledge whatsoever) which had the change to stay in the passenger seat today immediately noticed that the car feels "lighter" and is "more aggressive". Previously she said that the car felt a bit heavy. She said she clearly notices the difference.
The throttle indeed seems more aggressive, and together with the almost elimination of turbo lag makes for a very nice ride

Oil temperatures are lower, I mean the runtime oil temperature is the same (about 110 Celsius) but when driving (slowly) for an hour in heavy traffic (at 32 Celsius outside temp, so pretty hot) the temp did not reach 120 Celsius like usual, it remained at 110.

About the fuel consumption, I have mixed feelings. I think the fuel consumption is higher (lower mpg). I mean, I can obtain the same mileage as before but as long as I push the pedal the car takes up more fuel than before. However, take this with a grain of salt, because since I had the kit installed I have gone from WOT to WOT, its not really a real world scenario

When I try to drive super economically, I can obtain a better fuel consumption than when I tried to drive economically before. But when I drive normally the fuel consumption is worse. So push the pedal gently and you will be happy

All these observations suggest a more aggressive throttle response from this engine software, that's why I have to be more careful with the pedal than before.
Hi!
One question: do 297whp correspond to 340/345hp at the crank? Is it true?
Thank you

P.S. By the way, I've got Bmw Performance Exhaust since last december 2008 and I've never felt loose in power and performance! On the contrary, fantastic sound put aside, I felt the N.54 even thinly more aggressive... So don't worry if you had plan to install it, imho!
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      09-09-2009, 08:30 AM   #138
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Quote:
Originally Posted by Gio72 View Post
Hi!
One question: do 297whp correspond to 340/345hp at the crank? Is it true?
Thank you

P.S. By the way, I've got Bmw Performance Exhaust since last december 2008 and I've never felt loose in power and performance! On the contrary, fantastic sound put aside, I felt the N.54 even thinly more aggressive... So don't worry if you had plan to install it, imho!
Yes, about 340 at the crank but others will say that it means more, like 360-370, but I don't believe so (I have a manual gearbox so the loss is about 12-15%). But soon I will go to a dyno which claims it can measure power at the crank. Let's see...

I will install the BMW Performance Exhaust for sure
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      09-09-2009, 10:57 AM   #139
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A 335 w/ Perf kit, FMIC, catted DPs, hi flow catted exhaust, & intake is likely around 350+ crank hp, or 320 whp (manual trans). Combine that with losing 100 kilos and you have a very fast, reliable car.
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      09-09-2009, 01:40 PM   #140
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Any plans from BMS/Vishnu/GIAC on making a stage or map specifically designed for the Power Kit?

Also, not sure if this is old news, but saw a blogpost on US pricing over at BMWBlog.
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      09-09-2009, 10:10 PM   #141
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Anyone know if the performance tune increases boost at altitude and when iat's rise as the stock ecu does?
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      09-09-2009, 10:41 PM   #142
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Quote:
Originally Posted by cvc 22349a View Post
Anyone know if the performance tune increases boost at altitude and when iat's rise as the stock ecu does?
Yes.
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      09-10-2009, 04:24 AM   #143
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Sounds perfect for me then. Don't know of any other tunes that compensate for altitude by increasing boost. That's the great thing about these motors: don't really notice a drop off in power between sea level and 6500'. Plus, the additional cooling and extended warranty option are very important.. Only thing that'll keep me from getting this is having to purchase MSD81.
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      09-11-2009, 03:49 AM   #144
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Quote:
Originally Posted by cvc 22349a View Post
Sounds perfect for me then. Don't know of any other tunes that compensate for altitude by increasing boost. That's the great thing about these motors: don't really notice a drop off in power between sea level and 6500'. Plus, the additional cooling and extended warranty option are very important.. Only thing that'll keep me from getting this is having to purchase MSD81.
All "turbo" supercharged engine compensate for altitude by increasing boost...
Normal engines, wich work at atmospheric pressure (I don't know the right english word for these engine..), endure a drop off in power of about 1% every 100meters of altitude!
For this reason, if you drive often in mountains-streets, like I do, turbo supercharged engine cars are the prefered and recommended choice to enjoy driving!
For example, my cousin has an Audi RS4 V8 FSI 420hp, that I've driven lot of time in altitude: the loose of power is evident and annoying.
Una question: what's the differences between MSD80 and MSD81? How can I discover what version my car (E.91 335XI purchased on 11/2007) has?
Thank you in advance..
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      09-11-2009, 04:31 AM   #145
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Quote:
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Una question: what's the differences between MSD80 and MSD81? How can I discover what version my car (E.91 335XI purchased on 11/2007) has?
Thank you in advance..
You most likely have the MSD80 ECU, and you need the more expensive version of the Power Kit (which includes a MSD81 ECU). MSD81 was introduced in March 2008, from what I read. MSD81 has more features to allow BMW to detect 3rd party tuning software and piggybacks. But I think there may be other features of MSD81, in short it can only be beneficial for the car (at the extra cost...).
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      09-11-2009, 04:37 AM   #146
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Nearly all new turbo cars DME compensate for:

altitude: DME keeps constant at 8PSI independently of ambient pressure, but the turbos will work much harder if ambient pressure is low

temperature: up to a certain temperature the DME rises boost (up to 11Psi stock) to compensate for less dense air, but timing is reduced since hot air produces knocking.


If the turbos can handle the worse case high altitude (low ambient) pressure and high temperature (that requires 11Psi) why not let them run 11Psi in cold and at sea level?

I think that flashes like GIAC LET or ESS should get the max of the turbos, so run them at max Psi safely possible at a given outside temperature or pressure.

This of course means that in hot weather it will pull lower, but in cold weather or using methanol injection we would gain extra TQ/HP
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      09-11-2009, 06:21 AM   #147
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Quote:
Originally Posted by cstavaru View Post
You most likely have the MSD80 ECU, and you need the more expensive version of the Power Kit (which includes a MSD81 ECU). MSD81 was introduced in March 2008, from what I read. MSD81 has more features to allow BMW to detect 3rd party tuning software and piggybacks. But I think there may be other features of MSD81, in short it can only be beneficial for the car (at the extra cost...).
Thank you!
By the way, no problem with the availability of Power Kit with 335xi!
Ultimately, the dealer, despite of several previous communications stating the exact contrary , just on monday told me there is no problem to install the Kit!
It will be available till october .
Bye
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      09-11-2009, 12:53 PM   #148
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Can you get the bmw performance power kit and then add a tune on top of it, that's 20hp on top of the 50 by jb3 haha
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      09-11-2009, 03:00 PM   #149
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Quote:
Originally Posted by racerfan View Post
Can you get the bmw performance power kit and then add a tune on top of it, that's 20hp on top of the 50 by jb3 haha
No extra HP if map is same. Boost is boost, Procede / JB3 will still max at whatever psi the map specifies. What you would get with combining the two is a more reliable, longer-lived engine with better response. Of course, it's possible the tuners will make special maps that have more boost for cars with the BMW Perf kit because they think the extra cooling etc. allows for more power safely.
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      09-11-2009, 03:26 PM   #150
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Normal engines, wich work at atmospheric pressure (I don't know the right english word for these engine..), endure a drop off in power of about 1% every 100meters of altitude!
For this reason, if you drive often in mountains-streets, like I do, turbo supercharged engine cars are the prefered and recommended choice to enjoy driving!
For example, my cousin has an Audi RS4 V8 FSI 420hp, that I've driven lot of time in altitude: the loose of power is evident and annoying.
Una question: what's the differences between MSD80 and MSD81? How can I discover what version my car (E.91 335XI purchased on 11/2007) has?
Thank you in advance.. [/quote]

[quote=Gio72;5847944]All "turbo" supercharged engine compensate for altitude by increasing boost...

That's not true. My supercharged Mustang didn't increase boost at altitude; it probably lost a bit. Dinan's tune for the N54 does not increase boost at altitude. Again, the great thing about this car is I don't really notice a drop in power driving up here compared to sea level, and I want to maintain that feature if I tune the ECU..
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      09-11-2009, 03:27 PM   #151
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Quote:
Originally Posted by stressdoc View Post
No extra HP if map is same. Boost is boost, Procede / JB3 will still max at whatever psi the map specifies. What you would get with combining the two is a more reliable, longer-lived engine with better response. Of course, it's possible the tuners will make special maps that have more boost for cars with the BMW Perf kit because they think the extra cooling etc. allows for more power safely.
What about JB+? Doesn't this product just increase the boost without changing the map (by lying to the ECU)?

If not, can someone please explain why stacking the JB+ on top of the BMW Power Kit won't result in an OEM map with a bit more kick?
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      09-11-2009, 03:40 PM   #152
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Quote:
Originally Posted by interpol View Post
What about JB+? Doesn't this product just increase the boost without changing the map (by lying to the ECU)?

If not, can someone please explain why stacking the JB+ on top of the BMW Power Kit won't result in an OEM map with a bit more kick?
of course it will result in more kick. like on stock 335i without the BPK. The performance kit is basically what the Stock 740i is running. Its just an update on the software with more fine tuning.
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      09-11-2009, 04:28 PM   #153
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Quote:
Originally Posted by interpol View Post
What about JB+? Doesn't this product just increase the boost without changing the map (by lying to the ECU)?

If not, can someone please explain why stacking the JB+ on top of the BMW Power Kit won't result in an OEM map with a bit more kick?
Kaching! I suspect something like this will be popular. The caveat being that the software may have additional features to prevent use of other aftermarket tunes. If so, this strategy will backfire. Potential Perf kit buyers will shy away if they think there is additional monitoring, so fewer kits will be sold. This would be a shame, not only because of reduced sales, but also because if modders stay away they won't get the added cooling that would enhance reliability for cars with aftermarket tunes and reduce warranty claims.
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      09-12-2009, 06:45 AM   #154
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Yeah,thanks cstavaru for the interesting revue.
I am curious about the BMW Powerkit. This was the first I read about it. Itīs a safe way to go tuning.
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