E90Post
 


GetBMWParts
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Vishnu PWM help



Reply
 
Thread Tools Search this Thread
      07-15-2012, 01:30 PM   #1
MRVBC
Enlisted Member
United_States
0
Rep
44
Posts

 
Drives: E92
Join Date: Jan 2010
Location: Southwest

iTrader: (0)

Vishnu PWM help

To start off I rarely post here...I get most of my answers searching and reading before I need to ask... and I myself get frustrated with cluttering up the forum with the same questions over and over.

So, I just upgraded to Rev 2.5 and love the new maps.

I finally got around installing a used PWM kit from a member here.

Problem is when I went on my test run to do some pulls the only time I see my hazards flash is when I am letting up on the throttle (over 3500k) they just flash once and I know that meth is not flowing.

The kit I received was totally complete and barely used, it came with the upgraded pump also. I can jump the boost switch and the pump runs and it flows up to the charge pipe. I set the parameters as per the instructions in map 2 also. Set it to map 4... I purged the line from the washer bottle twice and triple checked for leaks and went through everything twice also.

Any help or direction would be appreciated. Thanks!
Appreciate 0
      07-15-2012, 01:40 PM   #2
JamesM3M5
Some dude
United_States
24
Rep
1,760
Posts

 
Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

iTrader: (0)

Did you install the one-way valve before the washer nozzles? Also when testing pump output, submerge the hose to see whether it is sucking bubbles.

Mine did the same, I just rechecked all the connections and blew out the small filter.

What did you set your flow number to?
__________________
RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350
Appreciate 0
      07-15-2012, 01:52 PM   #3
MRVBC
Enlisted Member
United_States
0
Rep
44
Posts

 
Drives: E92
Join Date: Jan 2010
Location: Southwest

iTrader: (0)

valve before nozzles with arrow in correct direction. Set flow to 20 like the directions said.

I will go and purge the line again and check for bubbles.
Appreciate 0
      07-15-2012, 02:00 PM   #4
NoQuarter
Second Lieutenant
United_States
2
Rep
221
Posts

 
Drives: 2007 530xi / 2008 535xi
Join Date: Jan 2011
Location: Indiana

iTrader: (0)

Also, with everything connected normally, turn on the pump by jumping the boost switch just as if you were purging the lines. This pressurizes everything and will show if there are any leaks on the high pressure side.

Use blue lock tight on the threads of the filter connections ( they like to come loose).

Simplify! In troubleshooting mine, I removed the connection to the washer nozzles, the T, the check valve, etc. Just one line from the washer tank to the pump and only the filter in between.

Add zip ties to each hose connection that slips over a barb fitting.
Appreciate 0
      07-15-2012, 02:59 PM   #5
Wedge1967
Banned
United_States
25
Rep
2,172
Posts

 
Drives: '07 e92 AT Sport Montego Blue
Join Date: Sep 2011
Location: Portland, OR

iTrader: (3)

Hope you get your meth issues worked out. Try removing the T connector and going straight into the WW tank line and see if that fixes your issue. If so, you could have a bad check valve that you should have located above the T.

Also, I'm a meth fire survivor. I and many other meth fire victims have one thing in common, WW meth kits. I highly recommend buying a trunk mount meth tank. Don’t go cheep… Get a good tank with foam or baffles to prevent sloshing and meth from blowing out the vent as you’re driving. Have fun and be safe.
Appreciate 0
      07-15-2012, 04:29 PM   #6
335okc
Captain
335okc's Avatar
10
Rep
654
Posts

 
Drives: e90 335
Join Date: Feb 2011
Location: okc

iTrader: (0)

I've experienced exactly your symptom when i first installed my pwm. in my case it was wiring error. also consider what wedge said about the trunk mount, the fire risk is there.
Appreciate 0
      07-15-2012, 09:50 PM   #7
MRVBC
Enlisted Member
United_States
0
Rep
44
Posts

 
Drives: E92
Join Date: Jan 2010
Location: Southwest

iTrader: (0)

Thanks for the info. I will try all of the options tomorrow.
Appreciate 0
      07-15-2012, 10:42 PM   #8
sear
Lieutenant
United_States
6
Rep
462
Posts

 
Drives: 2007 335xi
Join Date: Sep 2009
Location: Colorado Springs

iTrader: (0)

OP I second the recombination to double check the wiring. The install directions(step 10) should be checked again as wiring these wrong can cause your symptoms.

Good luck.
Appreciate 0
      07-22-2012, 09:34 PM   #9
MRVBC
Enlisted Member
United_States
0
Rep
44
Posts

 
Drives: E92
Join Date: Jan 2010
Location: Southwest

iTrader: (0)

Quick update... I had a broken wire on the Pwm harness. Thanks for all the info.
Appreciate 0
      11-29-2012, 02:55 AM   #10
pdubq
New Member
pdubq's Avatar
0
Rep
21
Posts

 
Drives: 535i, Spacegrey on grey
Join Date: Sep 2010
Location: Longmont, CO USA

iTrader: (0)

thanks for updating the thread MRVBC.

I've got same symptoms on my 535 trunk mount setup. been fighting it a few days now, (with very little time to put towards it).

have primed the $hit out of it, with boost switch jumped and solenoid activated, meth flows well and only a tiny bubble at first.... but actual driving it won't spray.

tomorrow we're going to scope the flow sensor return signal at the sensor and at the ecu box.
__________________
2008 535i, Vishnu Procede V5, Vishnu PWM Meth, Injen DCI, RPM air scoop, AR Design high flow catted dps, Custom cat-back dual exhaust, Wheel spacers (10mm/20mm), H&R Pro springs on Koni Yellow shocks
Appreciate 0
      11-29-2012, 04:57 AM   #11
badass335
Lieutenant Colonel
badass335's Avatar
Canada
33
Rep
1,814
Posts

 
Drives: 2007 335i E90 AT
Join Date: Jul 2007
Location: Surrey, BC

iTrader: (10)

My advice, remove the line after the fav, connect another longer line, run into cabin into a clear container. Take car for a boot and see if meth actually flows and see if dash lights up. In my case, issue was defective c-clamp on flow sensor. I ran a trunk mounted kit.

When I went for a drive, my meth flowed just fine but the sensor didn't log any flow. I did some troubleshooting and bought spare fav, spare pump, new lines, relays, and finally c-clamp wire which resolved it for me.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:36 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST