[335dwanted]

Originally Posted by Sti581

Question to those who have installed the AEM V2 HD kit, where did you locate the 5V source for the external map sensor? I am in the middle of wiring up and running my lines and this is practically the last piece of the puzzle that I need information on. I have read through this thread a few times to make sure I did not miss anything, but apparently no one had discussed the 5V signal wire recommended for the pressure sensor......

Thanks for your help in advance!

See this thread: http://www.e90post.com/forums/showthread.php?t=808542

TDIWyse describes how he tapped the MAP on post #17.

[Sti581]

Originally Posted by 335dwanted

See this thread: http://www.e90post.com/forums/showthread.php?t=808542

TDIWyse describes how he tapped the MAP on post #17.

Thanks for that. But it doesn't say which wire to tap into.... From the map sensor.

[BB_cuda]

Perhaps post 19 is what you are looking for?
http://www.e90post.com/forums/showpo...3&postcount=19

TDI taught me an IT trick in regard to single posts. You hover your mouse over the post number and it turns to a hand. Click when its a hand. This opens another tab with only this single post. Cut and paste that single post link. This is helpful to get someone right where you intended them to go.

On the other hand, 335dwanted served me well by sending whole thread as I searched down a bit. To each his own. There are times when a newbie really is lost and needs to read up on a whole thread. Other times, a pinpoint answer is fast for the intended recipient. Thanks again TDI for teaching me this trick.

[Sti581]

Originally Posted by BB_cuda

Perhaps post 19 is what you are looking for?
http://www.e90post.com/forums/showpo...3&postcount=19

TDI taught me an IT trick in regard to single posts. You hover your mouse over the post number and it turns to a hand. Click when its a hand. This opens another tab with only this single post. Cut and paste that single post link. This is helpful to get someone right where you intended them to go.

On the other hand, 335dwanted served me well by sending whole thread as I searched down a bit. To each his own. There are times when a newbie really is lost and needs to read up on a whole thread. Other times, a pinpoint answer is fast for the intended recipient. Thanks again TDI for teaching me this trick.

Cuda

I saw this already and dug into other posts from what 335dwanted mentioned. But that specific post does not clearly show which wire to tie into. That connector has several wires inside it. Hence my question which wire to tap into for the signal lol

[Chief Orman]

Snow kit running 70% meth...two nozzles with progressive spray that I typically have start spraying at 18 psi. If running 100% meth I will have it spray earlier. System feels go for about 40hp. Use Chipexpress with all emissions intact.

[DWR]

Originally Posted by Sti581

.. that specific post does not clearly show which wire to tie into. That connector has several wires inside it. Hence my question which wire to tap into for the signal lol

Wire #2, black with blue stripe.

[Sti581]

Originally Posted by DWR

Wire #2, black with blue stripe.

Sir you are a scholarly and gentlemen. Thank you for the pointer!! Cheers!!

[TDIwyse]

Thanks for addressing that, DWR. Haven't been on the forum very much lately...

On a related note, I had an unusual issue with my H2O/methanol system I've been battling the last couple weeks. This may be helpful to others if they need to diagnose potential issues...

By watching my AEM flow gauge (I can't praise this device enough, as it's helped diagnose multiple issues over the years, and is also beneficial in calibrating actual injection rates versus going by nozzle size) I noticed my system injection amount one day dropped to lower peak levels than it should. Then the next day it stopped injecting fluid when it should. I could audibly hear the pump being energized, but no flow was registering on the gauge.

Did a lot of systematic trouble shooting with trying to find where in the system the issue was (went over wiring, swapped solenoids, swapped pump, etc.). The weird thing was that any time I opened up the line at any connection in the system, which would relieve line pressure, the system would start working as intended again... This led to many times where I thought the problem was fixed, only to find the next day the system got locked up again.

The last thing I did a few days ago seems to have fixed the "lock up" problem. It was also the last item of the system I got around to checking. I took the check valve (I use a solenoid and a check valve ... because I'm cautious) apart and cleaned/soaked it in vinegar, reassembled and put back in.

There was nothing visually wrong, or any issue I could see, with the check valve during removal/disassembly. Which is a little concerning. I would've liked to have found a noticeable problem with valve...

[Nadir Point]

TDI - do you have a filter between the tank and pump?

[TDIwyse]

Originally Posted by UberArchetype

TDI - do you have a filter between the tank and pump?

Yes. But it is possible debris post filter come off one of the components after the filter and found its way through the rest of the system. But I didn't find evidence of anything like that when debugging things.

[Nadir Point]

Probably just a fluke then, but some check valves are better than others.

[Chief Orman]

Originally Posted by TDIwyse

Yes. But it is possible debris post filter come off one of the components after the filter and found its way through the rest of the system. But I didn't find evidence of anything like that when debugging things.

I don't have a filter and I worry about this issue.

[kydiesel35]

I don't have a filter as well. Prometh nozzles have a small micron screen though; they recommend submerging the nozzles every 6 months in vinegar to clean them.

[Sti581]

I just wanted to post a follow-up with the recommendations I was given for seeking the 0-5v signal. That information provided to me is incorrect from the map sensor. While it may be possibly used for a signal wire to the AEM or other units signal. I specifically requested for a 0-5v source. The source that the black and blue stripped wire is actually fluctuating and if I recall it only gives 3v at max. If anyone happens to run an external map sensor as I have. I bought the 4 bar map sensor, you need a dedicated 5v non fluctuating source.

So the proper way to perform this 5v input source for the external map sensor, is purchase what they call a 12v to 5v step down. I went on Amazon and or can be found on eBay. They go for a measly $5-$8. You have to run a 12v source from the battery or anywhere in the engine compartment to the step down piece and then run the yellow wire typically from the step down to the 5v input into the external map sensor. The other wires such as the grounds and the power to the battery are self explanatory. But this is the proper way to wire an external map sensor without having to mess with the factory one and get incorrect readings.

I hope this helps others when running your meth setup. Shoot me a message if you need further clarification or pictures. Can provide at request.

Car is running amazing although when I hit the set pressure it makes a crazy duck call noise when spraying in the intake lol. Need to
Figure out how to get rid of that noise lol

[TDIwyse]

Originally Posted by Sti581

I just wanted to post a follow-up with the recommendations I was given for seeking the 0-5v signal.

Ah, I was thinking you wanted a voltage output in the >0 to <5V range that carried MAP information, not a constant 5V supply. I thought it was obvious that the MAP sensor output would vary with Manifold Absolute Pressure, which is what the linked thread BB_Cuda posted described.

Sorry for the confusion. And glad you got your system working.

[Sti581]

Originally Posted by TDIwyse

Ah, I was thinking you wanted a voltage output in the >0 to <5V range that carried MAP information, not a constant 5V supply. I thought it was obvious that the MAP sensor output would vary with Manifold Absolute Pressure, which is what the linked thread BB_Cuda posted described.

Sorry for the confusion. And glad you got your system working.

Not a problem at all. It gave me spurratic operation. But I'm glad I was able to purchase a step down and have it delivered quick via Amazon prime (amazing service I might add). But yes for others if you plan to run an external map sensor which is highly recommended you will require a 12v to 5v step down. Hope this part of the thread will help someone in the future.

[KertR]

Sorry for digging up the old thread.
Have few questions. Has someone installed Aquamist HFS-3 kit to yours diesel?
If yes then maybe can help me. I dont want to control the system by boost switch. Hfs-3 has a possibility to control via railpressure. But i am a bit confused where and what wires i have to connect? Do i have to use USER port, and in that case where i connect green and red wire, to injector + - or to railpressure sensor + -? Or do i have to use ECU port red and green wire? (Red where actually is must have because it is the main voltage for the system)

hfs3 by Kert Reinhold, on Flickr

[Andy198712]

Good thread!
So on the simple setups, where you just use a boost switch,
Does this sit inline of your relay in the anal Earth line for it?
So you have your 12v live to it, then too the pump, and have an ignition live to the signal wire on the relay, and the earth from that has the boost switch inline to make and break it?

Hopefully I've explained that well enough, I've used relays ect before so happy with how they work.

Cheers
Andy

[PURE340i]

Can a meth kit be installed on a bone stock 335d not tuned just to help keep carbon eliminated?

[335dlci]

Originally Posted by PURE340i

Can a meth kit be installed on a bone stock 335d not tuned just to help keep carbon eliminated?

Yes. Me. At 104k.now. no cbu.

[QUIKDZL]

Originally Posted by PURE340i

Can a meth kit be installed on a bone stock 335d not tuned just to help keep carbon eliminated?

Yes. That's the beauty of diesels and water/meth injection. It'll clean things up and you'll get about 30 ponies during the spray. Engine doesn't care if it's on or off.

[PURE340i]

Originally Posted by QUIKDZL

Yes. That's the beauty of diesels and water/meth injection. It'll clean things up and you'll get about 30 ponies during the spray. Engine doesn't care if it's on or off.

Any suggested kits? I have the BMS on my 340i, but they don't seem to make one for the 335D.