Pfc And Strange Ignition Retard Issue .

[89CAL]

I'm having a similar issue by the looks of it.

take off from low revs and can watch the timing jump 10 degrees and as it does this I can feel it come alive and it pulls away. Feels doughy down low but because of this. Same tune as my old power FC so not sure why its an issue with the brand new one I have now

Might play with my TPS, think its at 0.44v at closed throttle

Edited November 23, 2012 by 89CAL

[t_revz]

How low is your timing going before it jumps back up?

Also has yours done it since new Ecu or all of a sudden?

Edited November 23, 2012 by t_revz

[89CAL]

How low is your timing going before it jumps back up?

Also has yours done it since new Ecu or all of a sudden?

Its noticeable now, not sure if it was doing it on the old one, but seemed alot smoother.

Jumps from 18-20 Degrees to 30 degrees.

Have adjusted my TPS to .45v closed throttle - 4.15 open throttle and seems to have improved it. I have the Decel cut at 1300rpm which might have something to do with it as well, so might try lowering this later and see if it makes a difference.

[t_revz]

I'm wondering if I need to do a data init to relearn idle after changing cam timing significantly. All the times I took of yesterday it wasn't at full temp so maybe the enrichment or timing corrections helped whereas on the way home the first time it was nearly at full temp and following times was at 81 degrees.

I've already got my ign and inj maps recorded on paper so ill copy down other settings then wipe it and start again

[t_revz]

Its noticeable now, not sure if it was doing it on the old one, but seemed alot smoother.

Jumps from 18-20 Degrees to 30 degrees.

Have adjusted my TPS to .45v closed throttle - 4.15 open throttle and seems to have improved it. I have the Decel cut at 1300rpm which might have something to do with it as well, so might try lowering this later and see if it makes a difference.

Mine jumped from 8 to 18ish

I can't remember now what those speeds all represent now but I've got 1400,1450,900,950

Working my way back through the FAQ to relearn

Actually it says 1400 off, 1450 on, 900 off, 950 on

Edited November 23, 2012 by t_revz

[89CAL]

I'm wondering if I need to do a data init to relearn idle after changing cam timing significantly. All the times I took of yesterday it wasn't at full temp so maybe the enrichment or timing corrections helped whereas on the way home the first time it was nearly at full temp and following times was at 81 degrees.

I've already got my ign and inj maps recorded on paper so ill copy down other settings then wipe it and start again

why are you writing them down? just save your old map, do data init and then reload the map and do the idle learn. Or do you not have FC Edit + an interface?

as for the idle settings, they are really car dependant, I just noticed mine improved alot when I raised the decel cut from about 1100 to 1300, it returned to idle alot nicer. This may be part of my problem now but I will experiment with it later on. The new Power FC is alot quicker to respond and is much quicker to input/read data so I'm pretty happy with it at the moment

[t_revz]

I have no other way to save it but paper

My idle and decel is fine just only when applying load at idle. Who knows maybe it won't do it again

[89CAL]

I have no other way to save it but paper

My idle and decel is fine just only when applying load at idle. Who knows maybe it won't do it again

realized that halfway through that that was probably the reason

[89CAL]

Mine is still 10 degree's retarded at lower RPM, seems to occur on low rev gear changes. Bit strange as its above the fuel cut (decel) revs so not sure what causes the Power FC to cut timing at this point.

Perhaps its something that has been picked up going from an older Power FC to a brand new one. Not to sure, but maybe one of the guru's here can shed some light

[t_revz]

I saw earlier in the FAQ about disconnecting the hand controller fixes an unusual timing error sometimes??

[t_revz]

Mine is still 10 degree's retarded at lower RPM,

What's the lowest number you have seen?

Disco and I are both seeing numbers lower than normal ign map ie less than 15

[89CAL]

yeah I'm not seeing that low, 18-20 degrees then jumps up around 30

[89CAL]

Ok here is a graphical demonstration of what Mine is up to

Apologies if I'm Hijacking now but maybe the issue is similar to what others are having or may help

Red Circle is a gear change where it looks like its going back to closed loop idle map then jumps up to normal timing.

Blue Circle is normal, no timing drop and doing what it should be doing

White Circle is another gear change where it is dropping timing then jumping up

Any ideas from the guru's here?

TPS was re-set yesturday at 0.45v closed and 4.15v at WOT

Have put the idle and decel cut right down and doesnt seem to make any difference. Next step will be to up the TPS some more but I will get to a point where it just wont go into the idle map which will be just as bad

Edited November 24, 2012 by 89CAL

[DVS JEZ]

Is there actually an issue with how the car behaves or just the timing numbers?

[89CAL]

Its noticeable. Feels doughy until it goes back to normal timing and you feel it pull harder.

Its got me I've looked at everything I can in monitor and sensor check and everything looks normal bar the timing. Have tried playing with the idle settings, disconnected the boost control kit and adjusting the tps. The only way I can get it to work is to hold a slight amount of throttle on between gear changes

[DVS JEZ]

So after a gearchange there is a hesitation once the throttle is re-applied?

And on take off?

Does it happen at all rpms?

[The Dan]

So after a gearchange there is a hesitation once the throttle is re-applied?

And on take off?

Does it happen at all rpms?

Maybe they're using the same chipset Haltech are using? Check coil output from the ECU with a scope and check coil charge times.

Is there an option for coil charge time in the new firmware Cal?

[89CAL]

So after a gearchange there is a hesitation once the throttle is re-applied?

And on take off?

Does it happen at all rpms?

It appears to happen at all RPM, Its just not as noticeable when your pushing it harder becasue I'm already in an RPM range where the timing is around 20 degrees anyway, so its not as noticeable.

I think I'm just going to do a data init and go for a drive under low load and see what it does. I think it might have inhereited something it doesn't like from the old Power FC. I've emailed Apexi about it anyway. Hopefully someone on here has an Idea but

Maybe they're using the same chipset Haltech are using? Check coil output from the ECU with a scope and check coil charge times.

Is there an option for coil charge time in the new firmware Cal?

Closest thing I can see is IGN Dwell vs RPM, but its no different to the settings I had on the old one

[89CAL]

Have had a play this morning and data init does nothing, driving on the base tune with only the injectors and AFM settings changed weilded the same results. Plug the old Power FC in with the new HC to eliminate that and it works perfect

However I have just noticed that when I load an old tune into FC edit now it is missing TPS vs IGN data. This data is non existant in the old power FC's it seems so I think I will try setting everything to zero in here

At the moment the values are all set to do nothing to the timing at any voltage of the TPS but this might be where the problem lies. If anyone has an older version of FC edit (pre 2.130k) and can confirm that this TPS vs IGN section is missing then please let me know as this might be what the problem is

[t_revz]

Just went for a quick drive to see if I could notice anything else.

I've got 18 in the top left 3x3 boxes. .44tps.

Idles at 15 fine. Once at full temp I cruised in 3rd at 1500rpm. Every time I came off the throttle it held at 10 for a few seconds( possibly normal and I couldn't feel anything)

Every time I stopped it would idle at 10deg for 10 seconds then slowly raise up a degree every couple seconds til it was back to 15

When taking off again it wasn't quite as bad as the other day and it would hang around 10-12 degrees but once went down to 2deg and stalled.

If I do a data init without my air con hooked up will it do an idle learn properly? Can I do 10 min idle then 10 with demister and lights and should be sweet?

Also are all settings changeable with the hand controller as I've got it all written on paper and don't wanna get stuck if I can't re-enter it all after