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      02-26-2013, 05:52 AM   #45
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Check this site out for those who are interested for the BMS JB1 and other mods. Im very pleased on how good the dynos looked on their end with the BMS, including other mods...

http://www.europeancarweb.com/tech/e...2012_bmw_328i/
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      02-26-2013, 10:53 AM   #46
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Originally Posted by VANOS View Post
Check this site out for those who are interested for the BMS JB1 and other mods. Im very pleased on how good the dynos looked on their end with the BMS, including other mods...

http://www.europeancarweb.com/tech/e...2012_bmw_328i/
It's something wrong with some of the numbers here. BMW says the car makes 240hp and the Dyno says 236 whp stock. Someone's gotta lie, and I suspect it's BMW
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      02-26-2013, 10:59 AM   #47
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No, it modifies the MAP and TMAP output, which are both boost sensors, to fool the car in to thinking its running a little less boost than it actually is. And the DME responds by raising duty cycle adding a little boost. The BMS JB Stage1 uses a similar technique to fool the DME but with addl sensor data available to it has a more sophisticated algorithm.

The Stage2 upgrade kit is basically a new control box and 4 extra wires that plug in to give the tune full CAN access. Which opens up a whole new world on the tuning end. I'm hoping they will do some dyno testing next week for me to share. Their 328 has had the Stage2 BETA on it for a couple weeks now.

Mike
Mike, will the Stage 2 add more hp/lb-ft? Or just new features?
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      02-26-2013, 11:05 AM   #48
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It's something wrong with some of the numbers here. BMW says the car makes 240hp and the Dyno says 236 whp stock. Someone's gotta lie, and I suspect it's BMW
The key is not looking strictly at the peak numbers, but rather the gains. Every dyno will give you different peak numbers, but the gains should be fairly consistent.
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      02-26-2013, 11:25 AM   #49
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The key is not looking strictly at the peak numbers, but rather the gains. Every dyno will give you different peak numbers, but the gains should be fairly consistent.
Now that you said it makes sense.
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      02-26-2013, 01:18 PM   #50
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Quote:
Originally Posted by metrathon View Post
It's something wrong with some of the numbers here. BMW says the car makes 240hp and the Dyno says 236 whp stock. Someone's gotta lie, and I suspect it's BMW
Quote:
Originally Posted by Blake P View Post
The key is not looking strictly at the peak numbers, but rather the gains. Every dyno will give you different peak numbers, but the gains should be fairly consistent.
Quote:
Originally Posted by metrathon View Post
Now that you said it makes sense.
After looking at various dyno numbers it is widely accepted that the n20 is underrated and winds up often putting it's crank rating to the wheels.

On a load bearing dyno I left with 260wtq on a stock car with catback. Should be over 300 with the tune.
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      02-26-2013, 05:02 PM   #51
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Mike, will the Stage 2 add more hp/lb-ft? Or just new features?
They are hoping for nice power gains. I'm not sure what they will be on pump gas, maybe only 10hp, but they are expecting big gains on the Stage2 E85 and race gas tuning.

Mike
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      02-26-2013, 05:37 PM   #52
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Quote:
Originally Posted by Jamesons Viggen View Post
After looking at various dyno numbers it is widely accepted that the n20 is underrated and winds up often putting it's crank rating to the wheels.

On a load bearing dyno I left with 260wtq on a stock car with catback. Should be over 300 with the tune.
With all this being said, I wish they also did the same thing with the aFe Scorcher module to see how much you gain exactly with that tune. Then compare it to BMS.
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      02-26-2013, 05:52 PM   #53
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They are hoping for nice power gains. I'm not sure what they will be on pump gas, maybe only 10hp, but they are expecting big gains on the Stage2 E85 and race gas tuning.

Mike
Mike, how much are you selling the BMS Tune for?
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      02-26-2013, 06:02 PM   #54
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I have the aFe tune, and I'm very happy with the results. It taps into two sensors (MAP & TMAP), which is different from BMS' method. By utilizing those two sensors only, I don't think boost pressure is touched. Instead, I think it modifies the AFR and TPS voltage to achieve results - pretty genius if you ask me, and it should be a very safe and reliable tune for these reasons.

Install is a 5 minute affair, very easy to install and remove.

Fuel economy has improved for me - in two full tanks since install, MPG went from 29.1 to 30.5 and 30.3 per tank. That's with the same driving behavior before & after - commute to/from work.

That being said, the aFe solution likely will not have an upgradeable Stage 2 like the BMS tune, as there aren't any accessible ports.

You can't go wrong with either choice IMO. I went with aFe for the ease of install and reliability in how it goes about achieving the power increase (not touching boost pressure).
Are you going to take it in for a dyno run? If so, please post up the results. It would be awesome to see what the gains are like, rather having the numbers come from aFe.
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      02-27-2013, 10:43 PM   #55
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I have the AFE scorcher in my car and my buddy just ordered the BMS one, once he gets it and were going to do a pull and see who beats who.
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      02-28-2013, 02:51 AM   #56
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I have the AFE scorcher in my car and my buddy just ordered the BMS one, once he gets it and were going to do a pull and see who beats who.
Hellyeah man! Dude! When ever you get the chance please let us know how it goes! I would really love to know!

How do you like the aFe tune so far? Notice a big difference?
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      02-28-2013, 03:12 AM   #57
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Hellyeah man! Dude! When ever you get the chance please let us know how it goes! I would really love to know!

How do you like the aFe tune so far? Notice a big difference?
I love it, before my buddies STi would beat me by 3 cars. Now I beat him by 3 cars haha.
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      02-28-2013, 04:04 AM   #58
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Im kind of new on this. My question is: would this give me a check engine light?
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      02-28-2013, 04:06 AM   #59
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Im kind of new on this. My question is: would this give me a check engine light?
Nope, had mine in for about 3k mile and no check engine light.
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      02-28-2013, 04:27 AM   #60
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Hellyeah man! Dude! When ever you get the chance please let us know how it goes! I would really love to know!

How do you like the aFe tune so far? Notice a big difference?
I love it, before my buddies STi would beat me by 3 cars. Now I beat him by 3 cars haha.
No way bro!! Do you just have the tune on your car? Or do you have other mods on it? Thats impressive brotha!
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      02-28-2013, 04:30 AM   #61
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Im kind of new on this. My question is: would this give me a check engine light?
Nope, had mine in for about 3k mile and no check engine light.


Has the tune given you any trouble for servicing?
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      02-28-2013, 04:30 AM   #62
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afe intake too, the car woke right up haha
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      02-28-2013, 04:31 AM   #63
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afe intake too, the car woke right up haha
Wow! Thats awesome! This is tough trying to pick between the two. I cant wait to hear about your buddies BMS tune!
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      02-28-2013, 04:36 AM   #64
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possibly tomorrow!
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      02-28-2013, 04:39 AM   #65
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possibly tomorrow!
Whenever you get a chance please post back! Maybe with vids if you guys possibly can! That would be great!
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      02-28-2013, 11:18 AM   #66
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Nope, had mine in for about 3k mile and no check engine light.
Thank you!
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