[Mike@N54Tuning.com]

Originally Posted by Marsch52

After reading this thread, I decided to jump in and give it a try. So, I am sitting here with a big grin on my face as I have just finished and Waahooooo!!!

The installation was as documented, but here are some things I found.

Take your time. It will take you about two hours, this is not a race and you don't want to mess up. Instructions are very clear, read them over a couple of times before you start. You will spend most of your time removing and replacng the cowl, etc. The actual connection of the wires was 10 minutes.

Make sure you don't knock off the speed nuts that hold the cowl in place. There are two of them, one on each side. I had a spare.

ECU cover is a pain to put back on. Hint... remove the two black clips and insert them after you have seated and locked the ECU cover down.

Also, if you move the rubber cover on the left side, back a bit, the cover will slide into place easier.

When you insert the new wires into the connectors, always in set them with the little tab up, so that if you ever want to remove this, you can disengage them by just pressing the tab down with a little screwdriver.

All in all, the throttle response is noticeable right away, waiting for the power to come on as that is supposed to take a couple of days.

Thanks for the review and happy I could get it to you in time for the weekend. Go EXPRESS Post LOL

Keep us update as you drive it some more and it adapts.

Mike

[RogueRunner]

Does anyone install this in the bay area?

[Nypeder]

any dyno numbers on a american auto e90 325?

[lonestar22]

does anyone have any numbers on paper?
i want to see what a difference this chip really makes besides whatever 'response' could be

[bavarian19]

If this is still around in another year or so, I will be all in. I am going to wait some time to see if anyone has any lingering problems afterwards like some 335 tunes did.

[Mike@N54Tuning.com]

Originally Posted by lonestar22

does anyone have any numbers on paper?
i want to see what a difference this chip really makes besides whatever 'response' could be

Here are some dynos I have posted before...



.

[Yvette]

want feedback from 6spd manual users

[tempo]

Some dyno charts of the Powerbox installed in Euro 2.5 Litre N52's:

http://www.bmw-sg.com/forums/boss-mo...engines-3.html

[E92325i]

Just installed mine today on a euro E92 325i (2.5L) , installation is way easier when you actually are in the process of doing it, at first the instructions looked complex however it it all makes sense when you've got the car all apart

i went for a 5 minute spin and i can feel the throttle response but obviously have to wait for the ecu to adapt fully over the next few days

Mike@ n54 tuning was really easy to deal with and answered all of my emails within the hour despite the large time zone differences as I'm in Australia.

Thanks Mike

[tshpark]

Wow..... It will be a must have item!!

[Marsch52]

Originally Posted by e90sexion

want feedback from 6spd manual users

I just installed it on the weekend in my 2008 323i 6speed. The throttle response was noticed immediately and in my mind worth the expense right there. I look at the performance enhancement as a bonus as the car is just so much more lively. Reminds me of my old 535i and 633 CSi.

[Mr&Mrs323i]

Originally Posted by tshpark

Wow..... It will be a must have item!!

The 2009 Top Christmas Gift - The Best of the Best!

[LuvMyRide]

Yeah. I'm in the Bay Area. Dr. Phuonger did my install.. Highly recommended

Originally Posted by RogueRunner

Does anyone install this in the bay area?

[Mike@N54Tuning.com]

Originally Posted by Mr&Mrs323i

The 2009 Top Christmas Gift - The Best of the Best!

+1

Mike

[OlivaresAnthony]

After reading about everyone's experience with it, it will definately be the next thing I buy for my car....just have to wait for some extra money to come my way...

[Mike@N54Tuning.com]

Originally Posted by OlivaresAnthony

After reading about everyone's experience with it, it will definately be the next thing I buy for my car....just have to wait for some extra money to come my way...

Awesome.

Just shoot me a PM and we will get you hooked up when you're ready

Mike

[ModBargains.com]

Great review !!

Every single one of our customers who have purchased the PBX have nothing but great things to say about the product

It will change the performance of your vehicle and increase throttle response!

[jhb74]

Originally Posted by e90sexion

want feedback from 6spd manual users

I have a 2008 4 door 6 speed 328 XI.

The chip is the real deal, although I'm running it with the BMW performance exhaust which was installed April 2008 (the BMS was installed maybe 1-2 months ago).

The car is just crazy aggressive now, and I have run it on Map 1,2 and 3. After playing around with it, I have decided that 2 is my favorite. I agree with earlier posts that the chip seems to have made the exhaust more agressive - and throttle remap 3 was cool, except that once you push down like 1 inch on the gas - thats it. I like the feeling of being at half throttle and having more in reserve when needed.

I have always liked my car - and have always told people that the actual power was the weakest link. These two upgrades have changed that - its a completely different animal then it was when I bought it.

I was skeptical - in the end my decison was driven by the cost. It's $299 - so I got it. And it works - no question, it adds noticeable power. Make sure you give your expectations time to allow the ECU to adjust, the power arrives over the course of a few days.

[HPFREAK]

Great news. I knew this would be a hit for you N52 guys. you all needed something like this to brighten your days

[OlivaresAnthony]

Originally Posted by Mike@N54Tuning.com

Awesome.

Just shoot me a PM and we will get you hooked up when you're ready

Mike

I definately will...

[chaz58]

In your opinion, what is the performance difference between the BMS and the exhaust (besides price).

The exhaust gave me better throttle response, and a better high end. sounds like the BMS gives more of the same (and a little more torque lower in the RPM band?)

Originally Posted by jhb74

I have a 2008 4 door 6 speed 328 XI.

The chip is the real deal, although I'm running it with the BMW performance exhaust which was installed April 2008 (the BMS was installed maybe 1-2 months ago).

The car is just crazy aggressive now, and I have run it on Map 1,2 and 3. After playing around with it, I have decided that 2 is my favorite. I agree with earlier posts that the chip seems to have made the exhaust more agressive - and throttle remap 3 was cool, except that once you push down like 1 inch on the gas - thats it. I like the feeling of being at half throttle and having more in reserve when needed.

I have always liked my car - and have always told people that the actual power was the weakest link. These two upgrades have changed that - its a completely different animal then it was when I bought it.

I was skeptical - in the end my decison was driven by the cost. It's $299 - so I got it. And it works - no question, it adds noticeable power. Make sure you give your expectations time to allow the ECU to adjust, the power arrives over the course of a few days.

[t1mmy]

Originally Posted by heemry328i

has anyone tried the map which only the tune is enabled and the throttle control is off? Can someone please try it and tell me if you can still feel a difference?

Second this... not much interest in a throttle remap but curious about the performance tune