MS2/extra beta 8 (20070818)

Post by **muythaibxr** » Sat Aug 18, 2007 11:18 am

The only change in this beta from beta 7 is that I added overboost protection.

I'll fix all remaining bugs when I'm back from vacation, then it's on to 2.1 development!

Here's the beta:

http://www.msextra.com/ms2extra/files/b ... 070818.zip

Ken

Eville140 · Post by **Eville140** » Sat Aug 18, 2007 6:49 pm

That rocks, thanks

Jon k · Post by **Jon k** » Sat Aug 18, 2007 7:18 pm

muythaibxr wrote:The only change in this beta from beta 7 is that I added overboost protection.

Ken

YES!! THANK YOU I LOVE YOU KEN!

MegaScott · Post by **MegaScott** » Sat Aug 18, 2007 7:40 pm

Got Beta 8 going on my Explorer today.

Specs-

Ford EEC-IV adaptor board
Megasquirt V2.2 board with MS2 daughterboard
4.0 V6
Port injection.
6x19lb injectors.
Single ported TB.
Ford PWM idle valve.
EDIS
Independant Baro.
A4LD trans control using the Warmup and Accel LED ports to drive the L/U and 3/4 shift solenoids.(port outputs drive 2 High current drivers on the adaptor board)
LCDash V1.5 with working Speedo Gauge. (VSS to the VR circuit on the adaptor board.)

Props to everyone involved in the creation of this code!! Everything I have tried so far works exactly as it's supposed to work. (knock on wood)

Ken, Closed loop idle works like a Charm after minor P and D reduction. Idle is exactly the target RPM. Even with the summer Max A/C cycling on/off, and putting the trans in and out of gear. As soon as the load is applied or removed it only takes about 2 seconds to get back to target RPM. The idle is literally rock solid!! 156hz and I don't hear a thing, and there's plenty of adjustment with nice and smooth transition from Cold to Hot.

Great job!!

Jon k · Post by **Jon k** » Sat Aug 18, 2007 8:09 pm

Scott can you provide a part number for the Ford PWM valve you're using?

MegaScott · Post by **MegaScott** » Sat Aug 18, 2007 11:19 pm

Jon k wrote:Scott can you provide a part number for the Ford PWM valve you're using?

It's the stock Ford plunger type Valve. they put practically the same valve on all EFI Fords from 86 to 93. The part number on mine is - AC-23 or Ford F0TE-9F715B1A

I've seen people tap out the holes for pipe fittings and add nipples and hoses for use on almost any engine.

On my engine it's bolted to the side of the intake plenum.

mops · Post by **mops** » Mon Aug 20, 2007 4:04 pm

ah, overboost protection... finally !

so great !

thanks team !

Jon k · Post by **Jon k** » Tue Aug 21, 2007 9:29 am

Real quick because I am not sure what is / is not fixed,

Does boost control work (duty target)?

Post by **jsmcortina** » Tue Aug 21, 2007 2:51 pm

Jon k wrote:Real quick because I am not sure what is / is not fixed,

Does boost control work (duty target)?

Pretty sure it does.

James

RdSnake · Post by **RdSnake** » Fri Aug 24, 2007 12:56 am

any change or improvement in iac stepper operation?

UnaClocker · Post by **UnaClocker** » Fri Aug 24, 2007 8:49 am

Stepper operation works. Not closed loop yet. I'm really looking forward to that. Seems my car needs a different opening depending on the weather.

Lordprimate · Post by **Lordprimate** » Fri Aug 24, 2007 9:09 am

UnaClocker wrote:Stepper operation works. Not closed loop yet. I'm really looking forward to that. Seems my car needs a different opening depending on the weather.

?????

There is going to be closed loop IDLE control with Stepper Valve????

UnaClocker · Post by **UnaClocker** » Fri Aug 24, 2007 9:14 am

From the to-do thread:

muythaibxr wrote:The intention is, when I get to it to make the current closed-loop idle scheme work with the stepper by converting percent (duty) to steps before doing the control for it.

Ken

Though closed loop idle isn't on the to-do list at the top of that thread for some reason. But yeah, it's on the way.

msoultan · Post by **msoultan** » Fri Aug 24, 2007 9:35 pm

As racingmini_mtl found, there's a bug in the standard fastidle code:

Code: Select all

	if(IdleCtl == 1)  {
	    if(outpc.clt < flash4.FastIdle)
		*pPTMpin[2] |= 0x04;             // turn on fast idle solenoid
	    if(outpc.clt < flash4.FastIdle - flash4.IdleHyst)
		*pPTMpin[2] |= 0x04;             // turn on fast idle solenoid
	    else if(outpc.clt > flash4.FastIdle)
		*pPTMpin[2] &= ~0x04;            // turn off fast idle solenoid
	}

It should have the first if removed:

Code: Select all

	if(IdleCtl == 1)  {
	    if(outpc.clt < flash4.FastIdle - flash4.IdleHyst)
		*pPTMpin[2] |= 0x04;             // turn on fast idle solenoid
	    else if(outpc.clt > flash4.FastIdle)
		*pPTMpin[2] &= ~0x04;            // turn off fast idle solenoid
	}

Otherwise hysteresis doesn't work.

TT350chevelle · Post by **TT350chevelle** » Sat Aug 25, 2007 8:57 am

Just changed from MS I to MS II beta 8,V2.2 pcb with the flyback board, 73 lb/hr injectors, 2 squirts alt, dizzy mode.
Here is some problems I noticed.

1)Rev limiter doesn't work but overboost does.(I have not spent much time checking this yet)

2) random EGO spikes that cause fuel to be added while cruzing (not critical but seems to be worse with simple EGO correction) Can dig up a screen shot if needed.

3) Strange injector cut at low rpm and small injector PW, some kind of problem because the injector PW is getting to close to injector open time?? (just guessing)

So far the change to MSII has been pretty good but the VE fuel map from MS I (latest code 024y?) was VERY rich, I had to reduce all the VE numbers by about 30 points.

These problems maybe be setting related and have not been able to spend any real time with my stim (yet) but thought I would post anyway in case other members have seen similar problems.

Brad J.
PS: MSQ attached along with screen shot of the injector cut out.

GintsK · Post by **GintsK** » Sun Aug 26, 2007 2:53 pm

I try previous 12.08.2007. version with dizzy. It is VW16V 2Liter n/a ~170hp 314cc injectors. Must say it is big step forward! Using MLV 16x16 table tuning is real pleasure! It will be very usable on n/a engines with aggressive cams.

Thanks!

Other installation is Opel 2L 16V turbo engine using 870cc low-Z injectors. 60-2 wheel. Previous I do not believe: really got it working @900Rpm and 13.6...14.7AFR!!! And it is with 2 injections per cycle (4 alternating). Awesome! Still unfinished.

I think there is some problems with my settings or code:

Can't get to work rev limiter with spark cut. Fuel and spark works in strange manner - first hits upper and then run without spark or fuel until lower limit and so on.

Can't get work launch control/flat shift on JS11.

Can't get trigger return to work for me. How correct must be angle between trigger and return? Previously run MS1-E on same installation and same board. and use all these features.

Something strange is with AE. In simple mode is some muss with TPS and MAP based acceleration/deceleration source.

Idle PWM has too rough step. About 80Rpm/stepPWM. 78Hz - loud too. BOSCH cigar type valve from VW Digifant.

And what is common problem: VE table calculations. It is too rough for nowadays resolution - without decimal fraction (?) Mainly it become as problem at lower side of VE map. Say at idle. In my case 54 or 55 VE change injection time enough for idle come unstable. It cange injection time on my VW engine from1.674ms to 1.717ms (0.043ms. my inj openning time is 1.1ms so it is 14% of injected fuel ). Yes I flatten map: got 0.015ms fluctuations and more stable idle. But this is only patching.

Gints.

Post by **muythaibxr** » Sun Aug 26, 2007 3:00 pm

TT350chevelle wrote:Just changed from MS I to MS II beta 8,V2.2 pcb with the flyback board, 73 lb/hr injectors, 2 squirts alt, dizzy mode.
Here is some problems I noticed.

1)Rev limiter doesn't work but overboost does.(I have not spent much time checking this yet)

Revlimiting should work. I used almost the exact same code for overboost.

2) random EGO spikes that cause fuel to be added while cruzing (not critical but seems to be worse with simple EGO correction) Can dig up a screen shot if needed.

3) Strange injector cut at low rpm and small injector PW, some kind of problem because the injector PW is getting to close to injector open time?? (just guessing)

I've never seen this on the bench, I'll see if I can reproduce that sometime this week after I've caught up with everything else.

Ken

teg · Post by **teg** » Sun Aug 26, 2007 10:41 pm

TT350chevelle wrote: 2) random EGO spikes that cause fuel to be added while cruzing (not critical but seems to be worse with simple EGO correction) Can dig up a screen shot if needed.

3) Strange injector cut at low rpm and small injector PW, some kind of problem because the injector PW is getting to close to injector open time?? (just guessing)

I guess that those EGO spikes and injector cuts are overrun fuelcut. Your cruising TPS value (MAP and RPM too!) are very close to overrun fuelcut limit. Try to increase TPS limit from 4% to 7-9%.

TT350chevelle · Post by **TT350chevelle** » Mon Aug 27, 2007 7:55 am

Opps!

Thankyou Teg... I should have caught that!

Brad J.
PS: Ken, don't waste any time on my "problems" until I can verify that their real, I'm still getting used to the new code and probably have something set wrong.Will do some further testing today.

MegaScott · Post by **MegaScott** » Mon Aug 27, 2007 5:29 pm

TT350chevelle wrote:Opps! Thankyou Teg... I should have caught that!

Brad J.
PS: Ken, don't waste any time on my "problems" until I can verify that their real, I'm still getting used to the new code and probably have something set wrong.Will do some further testing today.

Brad, I am having the same glitching going on with my EGO, though right now it looks like just the MT gauge is glitching, but as you, I haven't looked that close into it yet.

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MS2/extra beta 8 (20070818)

MS2/extra beta 8 (20070818)

Re: MS2/extra beta 8 (20070818)