Juice Box?
#1
01-23-2008, 12:23 AM
Join Date: Feb 2004
Location: North County San Diego
Posts: 831
Rep Power: 88 
Juice Box?
Anyone know anything about this? Looks like it uses a map already in the OEM ECU for the e90 335's. I heard this is a better alternative than the v2.
Any info floating around?
David
Any info floating around?
David
#2
01-23-2008, 08:25 AM
There is a ton of info out there. My suggestion is go to e90post.com and go under Forced Induction section. You will have about 2 weeks worth of reading material.
Cliff notes -- helluva good product and even more so for the price. I didn't want to fool around with the piggyback systems like JuiceBox, ProCede, Xede so I got the SSTT which is an easy "plug n play" that does not mess with the car's ECU. The others provide more HP/TQ than my SSTT but 320-330 whp is fine with me
Hell, its easy enough. Here ya go
http://www.e90post.com/forums/forumdisplay.php?f=58
Cliff notes -- helluva good product and even more so for the price. I didn't want to fool around with the piggyback systems like JuiceBox, ProCede, Xede so I got the SSTT which is an easy "plug n play" that does not mess with the car's ECU. The others provide more HP/TQ than my SSTT but 320-330 whp is fine with me
Hell, its easy enough. Here ya go
http://www.e90post.com/forums/forumdisplay.php?f=58
#5
01-23-2008, 11:57 AM
"All you need is a 1k ohm resistor and a 330 ohm resistor. Join them in series. Hook the 1k ohm end to a signal ground (pin 34 in the black subconnector (in the large ECU connector). Hook the 330ohm end to TMAPin. Connect TMAPout to the point where the 1k and 330k ohm resistor join. This is called a voltage divider. Fully passive and costs less than 1 dollar to make. Maybe another $10 if you want to use BMW pins to avoid any cutting or splicing.
You can raise or lower boost by changing the 330ohm resistor. Lower values will drop boost. Higher values will raise boost.
Oh yeah, don't forget to bypass one solenoid when doing so.
Not the ideal tune by any means but it will put down just as much power, on pump gas, as the other non-microcontroller based products out there. For less than the price of a Bic Mac."
By Shiv on e90post.
You can raise or lower boost by changing the 330ohm resistor. Lower values will drop boost. Higher values will raise boost.
Oh yeah, don't forget to bypass one solenoid when doing so.
Not the ideal tune by any means but it will put down just as much power, on pump gas, as the other non-microcontroller based products out there. For less than the price of a Bic Mac."
By Shiv on e90post.
#6
01-23-2008, 03:00 PM
"All you need is a 1k ohm resistor and a 330 ohm resistor. Join them in series. Hook the 1k ohm end to a signal ground (pin 34 in the black subconnector (in the large ECU connector). Hook the 330ohm end to TMAPin. Connect TMAPout to the point where the 1k and 330k ohm resistor join. This is called a voltage divider. Fully passive and costs less than 1 dollar to make. Maybe another $10 if you want to use BMW pins to avoid any cutting or splicing.
You can raise or lower boost by changing the 330ohm resistor. Lower values will drop boost. Higher values will raise boost.
Oh yeah, don't forget to bypass one solenoid when doing so.
Not the ideal tune by any means but it will put down just as much power, on pump gas, as the other non-microcontroller based products out there. For less than the price of a Bic Mac."
By Shiv on e90post.
You can raise or lower boost by changing the 330ohm resistor. Lower values will drop boost. Higher values will raise boost.
Oh yeah, don't forget to bypass one solenoid when doing so.
Not the ideal tune by any means but it will put down just as much power, on pump gas, as the other non-microcontroller based products out there. For less than the price of a Bic Mac."
By Shiv on e90post.
i'd be very concerned about the reliability...
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#8
01-24-2008, 01:23 AM
FYI that crap shiv posted is not a Juice Box don't let him fool you. I know because when I had my juice Box I made 330whp on a mustang dyno and an hour later some guys with V2 made 295 whp lol. V2 is not all that.
#9
01-24-2008, 05:17 AM
Jmoney: Congratulations on your dyno results. I am sure the JB makes some good power, and I am not saying it is a bad product. Actually it appears to work as advertised. I was just pointing out that it is just an easy DIY. Listen to the "inventor" himself:
Hi gang, thought I'd give the 2-3 people that care an update on how my DIY tuner project is coming along.
I spent a few hours last night fiddling with the IAT sensor, and found adding ~50 degrees of temperature results in ~2 degrees less timing, all else being equal. This is a good thing, but not good enough to run the 12/13psi I'd like to run. I've come to the conclusion that we need to richen up the target AF ratios (big surprise!)
So, this morning I did a little web research and headed off to radio shack to make something more sophisticated. It's been a lot of fun learning exactly how all these little components work, and today I got a lesson in transistors. These are of the NPN variety.
The basic concept is the circuit turns on @ ~5psi and richens the AF ratios up ~1-1.5pt (adjustable) across the board. Later I'll throw the IAT attenuator back to pull out ~2-3 degrees of timing over 5psi, and if all goes well I think I'll be able to run ~12.5psi on 91 octane.
The breadboard I have is pretty big for testing (around 3"x7"), but I think the entire circuit could easily fit in a small key-fob size box. I've also ordered some BMW ECU connectors to make the entire thing plug and play. Once those and my portable wideband setup get in, I'll throw it on the car and do a little more track testing. I might even pony up $65 for a dyno one of these days.
Everything you see on the board plus the ECU connectors comes to a grand total of about $10.
http://www.e90post.com/forums/showth...ht=radio+shack
I spent a few hours last night fiddling with the IAT sensor, and found adding ~50 degrees of temperature results in ~2 degrees less timing, all else being equal. This is a good thing, but not good enough to run the 12/13psi I'd like to run. I've come to the conclusion that we need to richen up the target AF ratios (big surprise!)
So, this morning I did a little web research and headed off to radio shack to make something more sophisticated. It's been a lot of fun learning exactly how all these little components work, and today I got a lesson in transistors. These are of the NPN variety.
The basic concept is the circuit turns on @ ~5psi and richens the AF ratios up ~1-1.5pt (adjustable) across the board. Later I'll throw the IAT attenuator back to pull out ~2-3 degrees of timing over 5psi, and if all goes well I think I'll be able to run ~12.5psi on 91 octane.
The breadboard I have is pretty big for testing (around 3"x7"), but I think the entire circuit could easily fit in a small key-fob size box. I've also ordered some BMW ECU connectors to make the entire thing plug and play. Once those and my portable wideband setup get in, I'll throw it on the car and do a little more track testing. I might even pony up $65 for a dyno one of these days.
Everything you see on the board plus the ECU connectors comes to a grand total of about $10.
http://www.e90post.com/forums/showth...ht=radio+shack
#10
01-24-2008, 05:18 AM
Exactly. On top of that, who in their right mind is going to throw something together like that crap on a car they paid $50K for when the actual system only costs about $400 from Terry (Juice Box owner) and its guaranteed to work properly.
#11
01-24-2008, 08:26 AM
The owner of the company making the Juice Box is involved with a new forum called n54tech.com and there has been a lot of great dialogue on there about all the tuners in a much more professional manner than what has been discussed on e90. If you want some less biased info, go there and talk to Terry directly.
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