Ciao everyone, here it's Marchettino and today we make the M3 spicier!
As promised I told you, after having fitted the bang on the Abarth and accompany my friend Davide to remap his 4C,
today I'm back to my friends at ACME because the time is come to give more vivacity, more power to the M3!
Honestly this engine doesn't need more power but having installed a straight piped dekat exhaust I felt a loss of power in the low revs so
the idea is to give back more power in the low revs but at this point
to make this engine more performing. I heard some M3 owners that already reflashed their cars
and they even set the redline higher, which is not really low on this engine - 8250rpm
and more power and torque which are always welcome!
Here with ACME's instruments they're reading the ECU, the dyno has been linked to the car and now we're preparing for some dyno runs to see
what's the stock power output. Honestly I expect to dyno run less power than claimed because having a straight pipes exhaust
it has lost something for sure; on the other side when I installed the Armytrix I found out the headers aren't stock
so I'm sure even though it has a straight pipes, with these headers after the ECU reflash there will be a good power increase!
If you rember in the video of the 4C - swipe up if you haven't seen it yet -
I was here in the dyno room without problems because it's a noisy car but not exaggerated, instead for the Armytrix with valves open I prepared myself!
I just hope it not to blow up the mic of my GoPro!
Valves closed!
Hopefully I got these, I can't hear anything!
So here's the result after 3 launches with hot engine of course, these are the results
the best result achieved is 389nm of torque and almost 418hp,
this is the curve of the power, of the torque and I have to say I'm very surprised!
I was expecting a bigger loss of power, obviously the dyno runs have been done on 100 octane fuel, on 95 or 98 octane the power output would be lower for sure
As you may notice I'm temporaly back on 20" Breyton wheels, the car is not even very clean
I had the car detailed recently and now it's all dirty. The reason I fitted these tires is because winter is gettin' closer, this week it's raining very much
so I realized semislicks are not really the ideal tires for such conditions so for a while I'm driving with these wheels and by looking at
many feedbacks from you on my Instagram (@Marchettino) this spec - night blue with black wheels - you like it very much.
While my M3 is right there, a friend has joined ACME today to see how they work because him too is interested to make some works on his car
that as you can see, it's not very stock!
First of all, what do you think of the colour? It's not a paint but a wrap,
some carbon fibre details but painted, I like the diffuser very much.
The exhaust is particular because it's a straight pipes dekat, it was my previous exhaust when I bought the car!
Let's have a look at the interior as well.
The windows can't get any more illegal than this!
You can't see anything outside!
Also this one's manual - let's get in!
This should be brushed aluminium - painted black.
Also here the details on the steering have been painted black, with some alcantara which is always welcome.
Quite nice!
This infotainment sadly ain't original.
Let's start it to hear how does it sound!
Just like when I bought it, this was the sound! Now with the Armytrix it's not enraged!
This one doesn't have the carbon fibre roof because it has the soonroof option, if you go for it you can't have the carbon fibre roof.
Right, let's go back to ACME to see how the works are proceeding on my car.
We're ready, the new ECU map has been loaded, now they're going to do some tests to see what figures will come out.
This S65 sing, what an engine!
So here's the moment of the truth, this is the chart that shows the results before and after the ECU map, here
the curve of torque and here of the power. We may notice here
a big loss with the previous map due to the dekat,
we may notice a big loss that I felt at 4500rpm
then the curve raises 'till the redline whereas with the new curve we may notice here
the torque has been increased very much costantly 'till the redline, same as the power.
Talkin' about numbers, nearly 395nm of torque and 423hp have been dyno'ed.
In terms of power increase, I knew that a miracle couldn't have been done, after all it's a N/A engine. With the remap
we have reached the power claimed by BMW, many told me that by remapping I would have reached those figures because
as claimed by many, the stock BMW M3 E92 doesn't have the power claimed and with these dyno runs I can say it's true but
by looking at the chart, by driving it you'll tell the difference anyway in fact now we start it up
and we go for a drive to tell you my driving impressions with the new map.
The S65 is a very special engine, as you know it's the last N/A M, a N/A engine that pulls 'till 8250rpm
and with this remap we improved it even more.
The increase of power on a N/A won't be like you may find on a turbo but here has been done an improvement to enhance the power response and so the driving experience.
Let's open the valves!
I have also that extra power and torque that is always welcome to make it easier to drift!
Spectacular! This engine is a crescendo of power!
Amazing! With this improved curve of power I can feel a smaller difference between low and high revs because I like it especially at low revs
with that extra power and torque especially the loss of power filled up which allows to take advantage of the engine between 4-5000rpm.
So if you're thinking " Just with the remap you increased the power very little ", you don't have to focus just on that but overall,
here the important work hasn't been done in the power increase but to improve what was already there, take advantage of the potential of the engine and I think this work has been done admirably.
I thank the guys at ACME for having made even more spicier and fun first the Abarth and now the M3.
In the video description below you find the company details if you want to do some works on your cars.
Make sure to Like the video if you enjoy it, subscribe to my YouTube if you haven't yet and as always thanks for watching, ciao!