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BMW 3-Series (E90 E92) Forum
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335d boost gauge
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02-26-2013, 08:34 AM | #1 |
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335d boost gauge
Hi, i am a new owner of a very nice 2009 335d monaco blue with black leather and sport package. I have the car since 2 weeks and i have installed a JBD the 1st day i have the car.
I really like how it perform with the JBD. I have read all over the net about boost gauge for the 335d and i dont have find nothing exept the $500 P3 vent kit. I play with turbo car for close to 20 years and for me a boost gauge is not an option. Does anybody have one installed in a 335d and what is ours options. Thanks a lot and sorry for my english. |
02-26-2013, 09:14 AM | #2 |
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The jbd cable offeres an option to change the real time mpg gague to boost gague. Its kind of confusing navigating through the speedo options to find what your looking for, but it is possible. Good luck.
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02-26-2013, 10:22 AM | #5 |
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Welcome to the boards. I see that you're a fellow Canadian too. How many kilometers on your 2009 335?
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02-26-2013, 10:38 AM | #7 |
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No tune mon ami. That's the last thing I'm doing to the car after my suspension swap and LSD install.
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02-26-2013, 03:06 PM | #9 | |
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02-27-2013, 05:12 AM | #11 |
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there was a thread I posted either here in this forums or another of VENT boost gauge which was very cool but DAMN it was $400 yikes!!
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02-27-2013, 06:59 AM | #12 |
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03-02-2013, 07:56 AM | #14 | |
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Thanks. Mancuso. I never tried it because it doesn't strike my fancy.
FYI, the turner model of the p3 vent guage also gives 0-60 times (kind of neat) and the boost guage must be tapped separately from the OBDII From turnermotorsport.com... Quote:
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03-02-2013, 06:45 PM | #15 |
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Here's another option.
http://www.e90post.com/forums/showpo...45&postcount=5 Also, one could tap the MAP sensor for an analog signal of the sensor that the DDE uses to monitor boost (I use that for the water injection controller), |
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03-03-2013, 10:55 AM | #16 | |
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For anyone else's benefit who is wondering where the MAP Sensor is, I believe this is how to find get there... http://www.e90post.com/forums/showth...0#post12279400 |
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03-03-2013, 01:18 PM | #17 | |
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I'm using a short piece of really thin solder braid (something like this http://www.hmcelectronics.com/produc...Fc5AMgod42YAbQ) to slip inside the OEM connection, then crimping that to a wire wrapped in shrink wrap to form a weather tight seal. The wire goes to the 0-5V DC Snow adjustable controller (you set the start point and the end point and it does a linear progressive curve output to control the pump). The pump is a 250 psi Alcohol Injection Pump. The output goes through an AEM flow gauge unit and into the AEM nozzle. It's a pieced together system... Regarding the JBD, I modified it so it's a progressive controlled unit. Made a circuit which monitors the engine rpm's, and linearly increases the JBD rail pressure distortion above ~2400 rpms. Until ~2400 rpm's the JBD is basically off, and then increases to 100% at ~4400 rpm. Did this for a few reasons: 1. Reduced stress on injectors from above stock rail pressure for the vast majority of operation (99% of the cars driving is below 2500 rpm's so no excess rail pressure in those conditions). 2. Reading how the DDE adapts injector behavior leads me to believe it will tend to adapt out the JBD's behavior if its used at high levels all the time. Having the JBD essentially off during rpm's where the DDE adapts injector behavior leads to, I believe, higher output capability when it's needed (high rpm's, high load). 3. Reduced stress on the tranny by keeping peak torque levels below the transmissions rated capacity. |
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03-03-2013, 01:33 PM | #18 | |
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Btw, what settings are you using as min/max on the Snow controller? |
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03-03-2013, 01:52 PM | #19 | |
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My memory was a bit off. I added a water proof connector between the splice and wire. Did this to monitor the actual DC levels output by the MAP sensor when dialing in the controller settings (peak level was ~3.3V). The wiring is cleaner now than in the older pic, but there's still a lot of connections going on in there... |
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03-03-2013, 09:17 PM | #20 |
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Thanks, TDI!
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03-04-2013, 10:28 AM | #21 | |
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If we can find a good vaccum source, no need for a $500 boost gauge... |
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03-05-2013, 10:20 PM | #22 |
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And I got my hopes up about the cluster hack boost gauge . I am sure there is some vacuum line somewhere we can tap into to get a boost reading.
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