[oc_bimmer]

To all the methheads out there:

What is the best min/max boost, min/max duty cycle you've found working for your car?

I'm at min boost 6.5, max boost 12 psi, min duty cycle 25% max 100%.

My tank is in the trunk, and the flow sensor is under the steering wheel, injector on the chargepipe elbow.

What I noticed is there's a little delay in the flow, so when I WOT suddenly I get 00.1 error (low flow) for a few seconds, and then the all flow meter bars are lit indicating full flow. I also set the failsafe delay to the 170 max value.

What should I do to avoid triggering this failsafe at sudden WOT's?
(everything is fine when I increase the throttle slowly, but when I gun it failsafe triggers). Is this a matter of controller configuration?

[cn555ic]

Lower you failsafe delay to 150 and you should be good.

[coolingmist]

Originally Posted by oc_bimmer

To all the methheads out there:

What is the best min/max boost, min/max duty cycle you've found working for your car?

I'm at min boost 6.5, max boost 12 psi, min duty cycle 25% max 100%.

My tank is in the trunk, and the flow sensor is under the steering wheel, injector on the chargepipe elbow.

What I noticed is there's a little delay in the flow, so when I WOT suddenly I get 00.1 error (low flow) for a few seconds, and then the all flow meter bars are lit indicating full flow. I also set the failsafe delay to the 170 max value.

What should I do to avoid triggering this failsafe at sudden WOT's?
(everything is fine when I increase the throttle slowly, but when I gun it failsafe triggers). Is this a matter of controller configuration?

where do you have the flow sensor located? Trunk, underhood or mid car? Depending on where it is you may need to change the flow sensor calibration settings.

I assume you have version 1.06? the failsafe delay does not max at 170, it maxes at 250. In my vehicle I need to set the failsafe delay to 30. I have the flow sensor in the trunk at the exit of the pump. Makes the response time very fast.

The "00.1" that you are getting does not sound like a delay problem, it sounds like you have your settings on the setup wrong. Tell me the following:

1) what is your boost threshold set at?
2) what is your min flow, max flow settings at?
3) what are you min/max boost settings on the CMGS set at.
4) what version do you have? 1.04, 1.05 OR 1.06?

If you have an unrealistic boost threshold, min/max flow you can set the delay all you want and the failsafe is going to trip.

Get back to me with those answers. I have this on my 135I, so I can tell something is not correct.

CM

[oc_bimmer]

where do you have the flow sensor located?

flow sensor is located under the steering wheel column. far from the tank/pump, closer to the nozzle

1) what is your boost threshold set at?

I guess you're talking about Failsafe Signal Threshold (2 bars second time around), right? It's set to 75% duty cycle, not boost

2) what is your min flow, max flow settings at?

min threshold: 15, max: 85

3) what are you min/max boost settings on the CMGS set at.

min: 6.5, max 12psi

4) what version do you have? 1.04, 1.05 OR 1.06?

1.06

[coolingmist]

interesting. I set my delay to 30 and its perfect but my flow sensor is 6 inches from the pump.

I would make sure you have the pickup tap in the pump so you are not having a priming issue and set the delay until the 00.1 goes away.

CM

[oc_bimmer]

Mine maxes at 200 only and not at 250 (6 BARS 2nd time around).

I set it to 200 and I still get 00.1, and there's also a significant few second delay in display flow. What's wrong?

The guy who did the installation made sure the pickup fitting is installed and is extended all the way to the bottom of the tank.

[coolingmist]

Originally Posted by oc_bimmer

Mine maxes at 200 only and not at 250 (6 BARS 2nd time around).

I set it to 200 and I still get 00.1, and there's also a significant few second delay in display flow. What's wrong?

The guy who did the installation made sure the pickup fitting is installed and is extended all the way to the bottom of the tank.

the 200 is the max flow setting, not the pause. The pause will goto 250.

You are having some flow issue which is usually due to air in the line or something. I prefer to have the flow sensor next to the tank. There is no delay other than the pump getting up to speed. There still is an issue you are having.

Go through your settings and tell me what they are.

Here is what you do:

1) turn MIN and MAX to 1 and count down to 0
2) keep the MIN setting at the 1 and do not move it.
3) get each setting write down and then move the max to light up the next dial and get that. Do that for each setting and record them.

when you are done move the max to 30 and the min to 30 to get out of the config, you can then move the min and max back to where you want it.

CM

[oc_bimmer]

000
000
25
100
001
201
000
004

2nd time around:
001
75
25
000
000
200
000

[coolingmist]

One thing I am not sure of is your setting for the flow sensor. It was changed from default of 220 to 201. the closer to the trunk, the closer to 270 you should have that number. The closer to the engine bay the closer to 220 it should be. This means the number should be between 220 and 270. I would change to 220 and see how that works, then change to 230, test, do this and see if you have any improvement.

If you have the flow sensor setup correctly, but you have a long delay like this you have something wrong with how its installed. The flow sensor is having a delay because there is one. This is usually do to a priming issue, air in the line something not right.

First step is the 201 because that number is not right.

CM

[oc_bimmer]

I set it to 201 because the instructions say:

"The Flow Input Pulse/Liter parameter can be adjusted from 170 – 270.
...
The further from the injector the flow sensor is, the more calibration you may need.


My sensor is closer to the injector, so I figured I needed less calibration.

I'll try to set it to 220 and then 230 and report the results here.

Thanks

[coolingmist]

Yes I understand it says this
"The default value is 22000 pulses/liter, 220 is displayed on the 3 digit display during configuration as the default. The further from the injector the flow sensor is, the more calibration you may need. If you install your flow sensor in the trunk, you will need to change this number to 270"

I am so used to the system I take things for granted. In here we say that if its in the trunk its 270, if at the injector its 220, so I guess I thought it was obvious to adjust between 220 and 270. The adjustment range is from 170 incase anyone needs it. Sorry for the confusion.

CM

[cn555ic]

Wow...This sound confusing as hell....I hope you get this fixed, but its nothing compared to how easy my system is.

[coolingmist]

Originally Posted by cn555ic

Wow...This sound confusing as hell....I hope you get this fixed, but its nothing compared to how easy my system is.

There is nothing confusing about it. Your system is a very basic unit. It does not have a flow display, ability to inject based on multiple inputs, user configurable failsafe from within the cabin, user adjusable display to display boost, ability to adjust min/max dutycycle...the list goes on and on. There are those that like to have these features and know whats going on with a system. You only get out of your system what you put into it.

Im not knocking your system, but yours appears more simple because it has far less features, multiple boxes, less configurability etc.


CM

[Mr. 5]

I have mine set to come on at 4 psi and it hits 100% at 10 psi.

[oc_bimmer]

ok, so this is what I did:

- I filled the tank to the top.
- set min boost to 6 psi, and min duty-cycle to 20%, so the system starts to pump a little earlier (that's my meth "spooling"
- changed calibration to 230
- Changed failsafe from duty-cycle to boost, and set it to 12 psi. It seems to work better, since the previous duty-cycle based failsafe threshold was reached way earlier at around 8-9 psi, and that's why I got 00.1 errors (along with the under calibration CM mentioned earlier).

Now with boost based failsafe, by the time I get to 12 psi, there's already sufficient flow in the system and it also does not trigger failsafe error codes anymore. There's still a little delay (only a few milliseconds) in the flow bars, but I think it's because the flow sensor is far from the pump.

Once jb3 2.0 is out, it will simply switch back to map 3 (safest 12-13 max psi map on 91 octane) if the system fails.

Once you have your system set up, you can rely on it. It's absolutely crucial to monitor what's happening with your system real-time, otherwise if something goes wrong, like you have no flow, but you think everything is ok, but you'll only notice it when it's too late.

[oc_bimmer]

Originally Posted by Mr. 5

I have mine set to come on at 4 psi and it hits 100% at 10 psi.

what is your min duty-cycle?

[R1000K3]

The settings of the CMGS are complex and not quite easy to understand directly due to the many features of the unit and the lack of a computer setting MMI. Looking thru the instruction videos on http://www.youtube.com/user/coolingmist , which are very good, helps a lot to iron out the functionality and necessary settings for each application. Once it is set up correctly, it is just to enjoy.

[jaza45]

Originally Posted by oc_bimmer

To all the methheads out there:

What is the best min/max boost, min/max duty cycle you've found working for your car?

I'm at min boost 6.5, max boost 12 psi, min duty cycle 25% max 100%.

My tank is in the trunk, and the flow sensor is under the steering wheel, injector on the chargepipe elbow.

What I noticed is there's a little delay in the flow, so when I WOT suddenly I get 00.1 error (low flow) for a few seconds, and then the all flow meter bars are lit indicating full flow. I also set the failsafe delay to the 170 max value.

What should I do to avoid triggering this failsafe at sudden WOT's?
(everything is fine when I increase the throttle slowly, but when I gun it failsafe triggers). Is this a matter of controller configuration?

Did you ever fix it? Im having the same issues...

[oc_bimmer]

Yeah. see my post earlier. let me know if it fixes it. Also make sure there are no air bubbles in the hose.

- I filled the tank to the top.
- set min boost to 6 psi, and min duty-cycle to 20%, so the system starts to pump a little earlier (that's my meth "spooling"
- changed calibration to 230
- Changed failsafe from duty-cycle to boost, and set it to 12 psi. It seems to work better, since the previous duty-cycle based failsafe threshold was reached way earlier at around 8-9 psi, and that's why I got 00.1 errors (along with the under calibration CM mentioned earlier).

Originally Posted by ******

Did you ever fix it? Im having the same issues...

[jaza45]

Got it, thanks, I'll try it later on and see if this works for me...

[oc_bimmer]

CM,

If the tank is full, there is no delay at all. Meth starts to flow immediately. But once the fluid level gets lower, the lag is getting more noticeable, and there's also a 1-2 inch air bubble in the hose.

I guess I'm having a priming issue. How can I fix it?

Thanks

[coolingmist]

Originally Posted by oc_bimmer

CM,

If the tank is full, there is no delay at all. Meth starts to flow immediately. But once the fluid level gets lower, the lag is getting more noticeable, and there's also a 1-2 inch air bubble in the hose.

I guess I'm having a priming issue. How can I fix it?

Thanks

you will need to follow the instructions on setting up a pickup fitting to draw water from the bottom of the tank.

http://www.coolingmist.com/instructions/cmgs135i335.pdf

thanks!

CM