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Old 01-20-2010, 01:16 PM   #101
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Quote:
Originally Posted by Braineack View Post
I went to buy a power inverter at lunch today, not only did they not have the one the website said was in stock, but i broke my damn usb port on my laptop!
This thread inspired me to rig up this little gem so I could run >20 minutes and play around with TS. The inverter is one of the ones from Harbor Fright. $30, works great, although the built-in fan is a bit loud.

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What I found interesting is that I get the occasional comm reset in Megatune, presumably due to a noisy CAS signal, but running the real-time traces in TS I never saw any of the characteristic blips/spikes in rpm or AFR. I think I had selected a 15 Hz refresh for TS and I'm pretty sure MT runs a faster sampling rate, maybe that has something to do with it? I still haven't played with the tooth/sync logging.

I still need to play around with the software a bit more before I allow VE analyzer to autotune it, but it looks promising. Running the latest updated version all my settings appear to stick like they should. The ability to set maximum cell changes is great, something that would have saved me a bunch of manual editing with the old MLV.

Last edited by ScottFW; 01-20-2010 at 04:05 PM.
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Old 01-20-2010, 02:01 PM   #102
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For those of you using the ground on the passenger side of the head as I do -keep in mind that the ground is a bracket that itself bolts to the side of the head. So you could well have corrosion and resistance at the bracket to cylinder head junction and result in ground loops.

The best approach in my opinion is to have as many of the grounds as possible physically tied together such as soldering them to the same lug.

I had a lot of problem with comm. drop outs, re sets and whatever you call it using MT. I tried several different adapters etc.
These problems occurred when powering the lap top from a converter feeding off the 12v vehicle source or lap top battery or lap top wall wart powered from the garage AC. Most of my MSQ were corrupted as a result of this
The issue has all but disappeared since using TS.
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Old 01-20-2010, 02:03 PM   #103
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Haha. my inverter, that is mounted behind the passenger seat hes the cables routed into the trunk and to the batt thats in the car. Thats dangerous to have in the car with you if something happens.
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Old 01-20-2010, 02:44 PM   #104
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Obviously I'm not taking any high speed turns with the battery sitting unsecured like that. I rigged it up around midnight just to quickly try TS on some mostly deserted roads. I have a cigarette plug power adapter on the way so I'll see how that works. If it sucks I may end up doing a more proper hardwired installation of the inverter. This pimpin' live VE analyzer function has finally inspired me to do something about my laptop power situation.
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Old 01-20-2010, 02:52 PM   #105
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Hi Guys, appreciate a little advice. I am using the new auto tune program and think its really good, it has improved my fuel map no end. But I dont know if I have everything set up right to get the best from it, I have tried to follow the thread on here but alot of the terminology is confusing as I am quite new to MS.

I have left all setting stock on the autotune tab except the authority limits which are set to 15 and 20. I note some of you have changed your EGO settings, Mine are standard as follows:

Switch Point - 1.882
Ign Events - 72
Step size(%) - 1
Authority - 10
Above coolant - 71
above rmp - 1000
EGO correction step counter - Ing Pulses
Should I change these? or anything else in TS?

My set up is:
1.6
M45
LC-1 wb o2
MS1 v3

Very grateful for any advice as I am on a steep learning curve!!
Cheers,
Barry
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Old 01-20-2010, 04:00 PM   #106
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For the EGO stuff you will learn a good bit by searching this MS subforum for "EGO correction" or similar terms, or reading the Megamanual, to learn what all the various parameters do.

But real quick, your switch point is most likely wrong considering how most people have configured the output of their LC-1. You want that to be the voltage it outputs at stoich (14.7:1). If the LC-1 is set up for 0-5V = 10-20:1 then it should be 2.35V. If you have the LC-1 configured for 0-5V = 0.5-1.5 lambda, then it should be 2.50V.

Most people activate it at a higher coolant temp. I think mine is at 140. Not super critical but you probably don't need EGO correction during warmup. The rest of your EGO settings are fine but you should read up and learn what they do anyway. Note that EGO settings are stored in your Megasquirt and it will do closed loop correction without being hooked to a laptop running TS. You can use TS as an interface to adjust them, but I wouldn't call them "TS settings" per se. Also, EGO correction uses your VE table as a base from which to adjust fueling, whereas VE analyzer live will change the actual values in the VE table. The way you lumped your questions together like that, it wasn't clear whether you understood the difference.

For the VE analyzer authority limits, my fuel map is pretty good by now so I'm going to run a max cell change of 5 and a max % of 10, with the drop-down tab set on "very hard." Yeah baby, very hard. If your tune is more rough, you can set it on "easy" or "normal" and/or give it more authority as necessary.
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Old 01-20-2010, 04:16 PM   #107
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Quote:
Originally Posted by ScottFW View Post
For the EGO stuff you will learn a good bit by searching this MS subforum for "EGO correction" or similar terms, or reading the Megamanual, to learn what all the various parameters do.

But real quick, your switch point is most likely wrong considering how most people have configured the output of their LC-1. You want that to be the voltage it outputs at stoich (14.7:1). If the LC-1 is set up for 0-5V = 10-20:1 then it should be 2.35V. If you have the LC-1 configured for 0-5V = 0.5-1.5 lambda, then it should be 2.50V.

Most people activate it at a higher coolant temp. I think mine is at 140. Not super critical but you probably don't need EGO correction during warmup. The rest of your EGO settings are fine but you should read up and learn what they do anyway. Note that EGO settings are stored in your Megasquirt and it will do closed loop correction without being hooked to a laptop running TS. You can use TS as an interface to adjust them, but I wouldn't call them "TS settings" per se. Also, EGO correction uses your VE table as a base from which to adjust fueling, whereas VE analyzer live will change the actual values in the VE table. The way you lumped your questions together like that, it wasn't clear whether you understood the difference.

For the VE analyzer authority limits, my fuel map is pretty good by now so I'm going to run a max cell change of 5 and a max % of 10, with the drop-down tab set on "very hard." Yeah baby, very hard. If your tune is more rough, you can set it on "easy" or "normal" and/or give it more authority as necessary.

Many thanks for that, its starting to make sense and I will read up as you suggest. I am positive my LC-1 is configured for 0-5V = 0.5-1.5 lambda, so I will change the switch point to 2.50v. Appreciate your help bud.
Barry
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Old 01-20-2010, 04:54 PM   #108
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Where in TS do you guys configure for wideband type ?

It is not like MT !
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Old 01-20-2010, 05:02 PM   #109
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Quote:
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Where in TS do you guys configure for wideband type ?

It is not like MT !
File -> project options IIRC
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Old 01-20-2010, 05:03 PM   #110
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Omg. I finally started using TS today because of this. Tuning live made my eyes well up a little bit. I might even try and put my boost controller back in and turn it back up to 12psi.

I had been ignoring my megasquirt stuff for a long time because I was just so sick of opening megatune. I'm now finding myself playing with lots of settings that have been in need of adjustment for months.

Oh man its a good day.
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Old 01-20-2010, 05:05 PM   #111
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well. I might try my PID closed loop boost control today SO HA!!!!!!!!!!!!!!!!!!!
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Old 01-20-2010, 05:09 PM   #112
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How are you getting on with PID idle Braineack?

I can get it it Idle steadily untill I turn the lights on whereupon it's oscilate until I intervene and then it'll be steady again.

Close but not good enough!
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Old 01-20-2010, 05:12 PM   #113
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I'm not. I'm letting the OEM ecu handle it. Lollerskates!
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Old 01-20-2010, 05:13 PM   #114
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Quote:
Originally Posted by Jeff_Ciesielski View Post
File -> project options IIRC
Got it . thanks !
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Old 01-20-2010, 05:19 PM   #115
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How are you getting on with PID idle Braineack?

I can get it it Idle steadily untill I turn the lights on whereupon it's oscilate until I intervene and then it'll be steady again.

Close but not good enough!
I'm having an issue with this as well. Idles fine until lights come on. Then it hangs on at about 500 rpm. MSextra.com has a set of tuning instructions for closed loop idle under the MS3 documentation. I was hoping that someone more savvy than me had figured it out already.
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Old 01-20-2010, 05:38 PM   #116
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are you sure?
To the book apart from that noisy heater ground then. I can't see how the ground for the heater element of the sensor will cause a potential offset in AFRs.

Signal, analog and MS are all at the stock ECU. Perhaps during warmer, lighter days I will rig up a proper grounding strap and run directly to the head.
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Old 01-20-2010, 06:58 PM   #117
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What are you guys using for your PID EGO settings? I can't find any recommended settings on msextra.com.

I'm going to try the recommended closed loop idle settings recommended in the MS3 section.

I'll report back
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Old 01-20-2010, 07:07 PM   #118
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Last time I messed with EGO I enabled some authority (not with PID control) and **** all happened, I have an EGO correction guage and it never budged.

Not had chance to mess with it since, please report back how you get on!
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Old 01-20-2010, 07:52 PM   #119
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I like being able to log your AFR targets for MLV in MSII
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Old 01-21-2010, 12:16 AM   #120
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I installed a light weight flywheel before the MS.

If I go turbo I'll go and install a better clutch and the fw will come off.
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