03-30-2014, 10:58 AM | #1 |
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JB4 install help please!
i just received the n55 jb4 stage 2 and i am very confused with how to install, do I follow the n55 F30 instuctions? only attacting MAF and TMAP? leaving the other 2 alone? also do I attach the can wires that come off the top of the harness? please let me know i am very anxious to install and cant seem to find and information on install other than F30.
Thanks in advance Jeff
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03-30-2014, 11:27 AM | #2 |
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Yes, use the F30 install instructions on BMS website that links you to N54tech F30_install.pdf it's the same engine as ours. You do need to tap into the CAN wires that come off the harness as well. Hopefully yours came with the posi-taps so you can remove them without the dealer really knowing they were there.
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03-30-2014, 11:29 AM | #3 | |
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03-30-2014, 11:35 AM | #4 |
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I don't have the pdf in front of me atm, but I believe you install rainbow/brown wires and purple isn't used and blue isn't (because we're electronic solenoids) then you do the CAN wires via the posi taps and have fun.
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03-30-2014, 11:53 AM | #5 | |
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jeff
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03-30-2014, 12:12 PM | #6 |
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They go on the ECU harness itself I haven't looked at the 235 myself yet as far as the location but just take a look at the PDF and match up the colors. I don't think it would be any different from the F30 in terms of ecu wire coloring. Just make sure you choose the correct transmission as manual is different and at the bottom of the pdf.
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03-30-2014, 04:25 PM | #7 |
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On MT cars, the larger bundle by the ECU has a twisted pair that's red and blue-with-red stripe. That's where the CAN wires connect. Brown to red, green to blue-red. The F30 install guide I downloaded yesterday has the right picture, but the text has a mistake: it calls the pair "blue/red-blue wire pair" when in fact it's red/blue-red.
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03-30-2014, 05:52 PM | #9 |
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According to Terry, we can only run Map 1 for now, not Map 2. We would need the electronic solenoid harness thingy to run Map 2 and that is still under development.
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03-30-2014, 05:56 PM | #10 |
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I think with the steering wheel control you can only run Map 1 -- If you hook it up to the laptop with the usb cable you should be able to run map 2 no? I hope you can run map 2.
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03-30-2014, 06:07 PM | #11 |
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I e-mailed Terry and he said we can only do Map 1 for now . It makes sense since I think the harness for the electronic wastegate allows you to boost past 12psi. And without it, we are limited to only 12psi for now. As long as I get close to 400wtq I will be happy .
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03-30-2014, 07:52 PM | #13 | |
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Check my "started threads" for USB cable information. Here's a pic of the EWG, taken from next to the shock tower looking towards the front of the car. It's really tight in there, and you have to be careful to orient the cable correctly. Can only do this on a cold car... |
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03-30-2014, 08:12 PM | #14 | |
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i couldn't really tell from the f30 install pix. |
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03-30-2014, 09:51 PM | #16 | |
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thanks Jeff
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03-30-2014, 10:01 PM | #17 |
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I got the same code. Went away after a couple of restarts. I think it has to do with disconnecting the battery.
I've never tried using a generic USB to serial, so you're on your own there. If you're using Terry's cable, you need to go see where the COM port landed (using Device Manager), then configure the interface to match. |
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03-30-2014, 10:26 PM | #18 |
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Ok thank you, also couple things if you could help me out, can we run e85 with the flex fuel connection? And we can only run map one for now?
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03-31-2014, 02:13 AM | #19 | |
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