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JAWS Motorsport Alpha-N Full Review!

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24K views 81 replies 27 participants last post by  rickg  
#1 · (Edited)
Hello fellow board members!

The purpose and scope of this thread is to offer a complete comprehensive review of the JAWS Motorsport Intake and Tune package you have recently seen posted on the forum. On to the review:

In early November of last year I inquired to JAWS Motorsport about the Intake and Tune package they were developing. I was interested in potentially purchasing the complete package which included:

-Dimsport MyGenius flashloader and software
-BMC high flow 3.5" filters
-Powdercoated intake pipes and heat shields
-CF topped intake plenums with custom trumpets
-Couplers and required hardware

Well after a few weeks of constant contact with Jonas (I'm assuming he is the owner of the business), I pulled the trigger while still having plenty of reservations about removing the MAF's and IAT's from the car. About 1 month later (due to issues with the powdercoater - which are no longer a problem since they had 10 sets of piping and heat shields coated during this batch - for quick shipping!) I received this :) :

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As you can see the quality of the packaging was very good, however I feel some peanuts could have possibly added a bit more safety (I'm sure Joans will take mind of this as he has been excellent with customer service!), though nothing was damaged. There was a nice 3/8"-1/2" layer of bubble wrap around every part, and there was more soft cardboard over all the items (not shown in picture) to help keep them in place. The finish of the carbon fiber is absolutely fantastic.

The flashloader package included the loader itself, USB cable for connecting the flashloader to a computer, OBD II cable for connecting flashloader to the car, what appeared to be a backprobing wire (blue) that connects to the OBD cable if needed (not needed here), and a USB flash-drive containing the software for your computer.

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The process of getting the tune file took a bit of trial and error, but it is all sorted now and getting this done will be a quick and easy process. This is the procedure in a nutshell:

Connect your MyGenius unit to your laptop or desktop computer via the supplied USB cable. Load the supplied ABL file that JAWS will e-mail to you. Update the unit via the internet by using the included software (very self explanitory).

Now off to the car with the supplied OBD II cable. There is a specific procedure to follow here that is thoroughly described in the .PDF instruction manual that JAWS will also e-mail to you. In a nutshell you connect to the car and download the tune file to the MyGenius unit. I selected "FULL" read but apparantly I only had to select "PARTIAL" to get what JAWS needs. Warning if you select full you will be freezing in your car for 2.5 hours as you wait for the download to finish (you are not supposed to open the doors or turn on the lights etc. while the Genius reads and writes files. I would suggest when reading and writing files to open the drivers window and do everything through it so you can leave the loader to do the work. I am told if reading out only the partial file it takes a mere 15-20 minutes. It is also recommended that you connect your battery to a charger while doing this as the key must remain on without the engine started.

Once the download is complete, you connect the flashloader to your computer with the supplied USB cable and open the MyGenius software. Select "Upload from Genius" to save the file to your computers hard drive. Now simply attach this file to an e-mail you send to JAWS. They will modify it in a day and e-mail it back to you.

Once the modified file is received , open the software on your computer and select "Download to Genius", a browser will pop up and you can select the modified .FPF file JAWS sent you as an attachment in an e-mail. Take the Genius to the car with the OBD cable and follow the .PDF instructions to write the file to your car's ECM.

Once that is done you can go about removing the stock filter boxes and MAF's. This is a relatively easy task and I believe it has been described before on this forum. Once removed, install the heat shields that are included in the kit (with nice flexible rubber around the edges to prevent scratches). Then you can connect the filter piping and BMC filters to the intake plenums. If you are like me and decide to opt for the CF Topped Plenums with aluminum trumpets its not quite that easy. Getting to all of the hose clamps for the 10 throttle bodies can be a bit of a pain, but it is do-able with a 1/4" drive socket set and swivel. Keep in mind there are snap-on connectors at the rear of the plenums that can't really be accessed until the plenums are loose so be careful! Here are a few pictures I have from the installation process:

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I was surprised to see such CNC porting on the intake runners of the cylinder head, even the valve guides are machined flush! I did wipe out the oil residue seen the the throttle body pictures during the installation. I decided to go matte black on the emblems as I feel it looks better against the carbon fiber finish.

Now onto the real matter at hand, how does it feel?

Initial startup was just as it was when it was stock, here is a video of the first time I fired the engine after performing the flash and plenum/intake swap:



To close out this review I would just like to give Jonas the the folks over at JAWS Motorsports a big round of applause. I have been a major PITA I'm sure, and they have really stepped up and made this experience very enjoyable for me. I have sent them countless e-mails (well over 100 - 200+ combined between myself and Jonas), and they always responded the same day, sometimes within mere minutes. They also footed the bill for the additional tuned dyno time as I was unhappy with the initial results, that is customer service in my opinion. Sure there were times when I was unhappy, but they always made it right and in the end I'm a very satisfied customer. I think if anyone here is on the fence about going Alpha-N, they might as well leap off like I did, you'll probably like what you end up with :). On a side note I'd also recommend doing the intake plenums as it makes the car sound so good I can't describe it with words. Watch above dyno videos for more on the sound.

If anyone has any questions I'd be happy to answer them!

Tyler.
 
#2 ·
Wow, those open filter intakes wake our motor up pretty well, not to mention the melodious sound it produces. Time to pair it up with an exhaust system!
 
#4 · (Edited)
wow very nice gains and write up!
 
#5 ·
I would get this setup in a heartbeat! Unfortunately it would void my extended warranty and it's not easy to hide lol. I bet the intake sounds awesome under wot. The CF plenums look spectacular!
 
#9 ·
I can see where this argument would come into play. Honestly under normal driving conditions I have not noticed any issues with heat soak. Remember the ducting from the kidney grill area and bumper intakes is left untouched and still feeds in ambient air to the filter areas. I have driven the car for hours, come to my destination, popped the hood and felt each intake pipe and they are both cold to the touch.

I suppose if you were in traffic there could be an issue with heat soak, but I don't see that posing an enormous problem as intake temps would likely not rise above 20 degrees over ambient temperature. Also remember as soon as you get moving air will flow in from the factory ducts...

Quite honestly when I made my dyno pulls after the tune the intake piping was warm to the touch so if there is a bit of heat in the intake, it still makes plenty of power with it.
 
#8 ·
Nice good hp gain
 
#10 ·
tdonnel:

Thank you for a amazing write up, could never have asked for more :) :cheers:
About "heat soak" , we have meassure and compared stock air filter box VS our CAi with dual cone filters, as soon as u reach 50km/h the temp under the hood starts to go back cold (if its hot in a traffic light or so) it even gets colder faster!! , the M5 has vents on the fenders and i dont think anyone missed them? what do they do? they let engine compartment heat out, in speed its very effectful.

Want to do a easy test ? go buy a multimeter or anything that can meassure air temp pretty fast, put the probe right on the filter and close the hood, meassure when idle say 2-3 min after u reach full oiltemp, then start driving the car and see whats happens and how fast it does.

Try it in diffrent speed to see.
 
#19 ·
That's really a nice writeup and you are doing the members a great service.
I'm just wondering why the dyno's are uncorrected-I've been told (I am a neophyte with the dyno stuff) that uncorrected dyno charts are less than accurate.

Thanks-just trying to learn as much as i can, and your results look great!
Bill
 
#20 ·
Thanks irishbimmer.

To be honest, I'm not sure what the standard correction factor is. SAE I would guess. I know using the WinPep7 software when I selected ALL of the different correction factors, the difference in power was only 2-3 hp/tq MAX. So that's obviously not that substantial. I think if the pulls were done in ENTIRELY different conditions (vastly different temperatures and humidity levels), there would be a much bigger difference. For example using a correction factor would prevent someone from making a pull in 0% humidity and 30F temperature (optimal dyno condititions) and comparing the gains from that run to one made in say 75% humidity and 110F temps. Does this make sense?

Since all my runs were done in nearly EXACTLY the same conditions (I can post the graphs again with conditions selected instead of max numbers if anyone doubts me), there is a minimal change when selecting correction factors.

I hope this makes sense.
 
#21 ·
Excellent write up, with great supporting documentation.

I have the same car as you, 6 speed and color combo, and i'm in Maryland as well. I'm running the Evolve R tune as the only modification, and there is a slight difference, but as evidence to the time and effort you have taken these tunes are most beneficial with other modifications to the car. The gains achieved on your M5 are great, and I look forward to further additions to your current modding endeavours.
 
#24 · (Edited)
Your car sounds so awesome. Since this hooks up to the stock airboxes, I assume it can also hook up to the Dinan airboxes too? Carbon extravaganza!!

Damn I can't stop watching those dyno pulls...makes my pores raise...I'm in love.
 
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#25 · (Edited)
Thank you for the kind words! It really is amazing in person.

The plenums are identical in size to the OEM plenums, so you could just swap them and leave the rest of the intake Dinan.

If you're going to do that, you wouldn't need the flash or intake pipes, though unless you have a stroker you could and should!

Im sure JAWS could do this for you. There is however a core charge for the plenums. Preferably you send yours to them and they modify them and ship them back.
 
#26 ·
Just a little update for everyone.

The car is still running great!

If I shift hard from 1st to 2nd (6MT) the tires just spin all the way to the rev-limiter even in a straight line! It's actually very hard to stay in it without crashing, the rear end is all over the place! It had never done this before... And this is on dry pavement.

The tune still continues to impress :)