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[dbastille]

hi, saw your post- any help on getting mine chipped would be appreciated.....pls email me on dkbastille on google mail if you cant get hold of me here...thanks Dave

[TheBoy]

And Omegatoy is like Miss Daisy. We went for a drive Sunday, and he never went above 50mph

Now wait to hear his excuses

no we didnt cos 50 in top or rather 47/49 is exactly where the stutter occurs, unfortunately the roads round brackley are not very flat!! so we spent ages trying to get it to do it and capture it on tech2 to read the live data!!
but TB was feeling queasy trying to read while travelling so i could,nt go any faster for fear of  a pebble dash effect on the interior lololol

Always suffered that - I was surprised I lasted as long as I did to be honest...  ...another 5mins would have seen chunks...

[TheBoy]

hi, saw your post- any help on getting mine chipped would be appreciated.....pls email me on dkbastille on google mail if you cant get hold of me here...thanks Dave

I know a man who can supply chips, a fair few on here have them.

You cannot chip an Omega TD auto without putting in a stronger gearbox.

If you have a manual, or an AR35 auto, then its possible

[TheBoy]

managed to get the vibration again today.
So yes, i do have it...confirmed.

How bad is it? Omegatoy's is really bad, its the first one I've felt.

We are trying to ascertain if different ages of car make a difference.

[Marks DTM Calib]

Is it only manuals that are seeing the issue?

[TheBoy]

Is it only manuals that are seeing the issue?

The RPM is happens at probably masks it from autos - auto would drop a peg, lifting the RPM above the zone this happens.


One theory was the idle switch, and with the power coming on strong at this rev range (about 1450-1550 rpm) when chipped, if no/inadequate hysteresis existed.

Live data shows that it happens right at that point of the Idle Switch activating, but try as I might, I couldn't capture a snapshot right as it happened. And to be honest, by the time we managed to get it to run for long enough to get a snapshot, my dinner was about to reappear 

[Shackeng]

hi, saw your post- any help on getting mine chipped would be appreciated.....pls email me on dkbastille on google mail if you cant get hold of me here...thanks Dave

I know a man who can supply chips, a fair few on here have them.

You cannot chip an Omega TD auto without putting in a stronger gearbox.

If you have a manual, or an AR35 auto, then its possible

 

[o-meg-a]

Ok, well as far as I can ascertain, its not particularly strong. To the point where i really have to work quite hard to produce it. As such, it does not annoy me yet. Or should I say, in no particular circumstances of my daily drive does it become truly evident.

Mine is a 97 td estate manual, running a 427. It has 112k miles and is a select spec.

Could it be a torque issue related.to engine mounts as suggested in a previous post?

Or is it just something to do with resonant frequencies and vibration created by a longitudinally mounted high torque 6 cylinder engine?

[TheBoy]

hi, saw your post- any help on getting mine chipped would be appreciated.....pls email me on dkbastille on google mail if you cant get hold of me here...thanks Dave

I know a man who can supply chips, a fair few on here have them.

You cannot chip an Omega TD auto without putting in a stronger gearbox.

If you have a manual, or an AR35 auto, then its possible

 

But it seems your previous chip was a 'must try harder' affair

[TheBoy]

Ok, well as far as I can ascertain, its not particularly strong. To the point where i really have to work quite hard to produce it. As such, it does not annoy me yet. Or should I say, in no particular circumstances of my daily drive does it become truly evident.

Mine is a 97 td estate manual, running a 427. It has 112k miles and is a select spec.

Could it be a torque issue related.to engine mounts as suggested in a previous post?

Or is it just something to do with resonant frequencies and vibration created by a longitudinally mounted high torque 6 cylinder engine?

The thing that rules out engine mounts (Offside particularly troublesome on TDs) is this issue only seems to present itself on some 427 ECUs. Doesn't seem to affect other ECUs either.

I think the 427 is unique in that it does seem to be the most responsive to tweaking, not sure if that makes a difference.  Certainly my old 428 tractor didn't start to pick up until about 1700 rpm, whereas the chipped 427s all seem to start to come on song around 1500rpm

[o-meg-a]

Yeah i can see how that might limit the search.
Glad to hear mine is best one to have lol, but also worst one to have.

Just drove back from work and had it a little, and its noticeable, but honestly feels like a wheel wobble lol.

Its interesting that they were different ECU's available at all on the same engine.

Out of interest, is there any difference in vibration response between different chips?
+5, +10, 007 etc

Also, does anyone find that there's less smoke on hard acceleration with the +5 (i know the 007 is smokeless-er).

thanks

[Shackeng]

hi, saw your post- any help on getting mine chipped would be appreciated.....pls email me on dkbastille on google mail if you cant get hold of me here...thanks Dave

I know a man who can supply chips, a fair few on here have them.

You cannot chip an Omega TD auto without putting in a stronger gearbox.

If you have a manual, or an AR35 auto, then its possible

 

But it seems your previous chip was a 'must try harder' affair

Can't argue with that.

[Marks DTM Calib]

Is it only manuals that are seeing the issue?

The RPM is happens at probably masks it from autos - auto would drop a peg, lifting the RPM above the zone this happens.


One theory was the idle switch, and with the power coming on strong at this rev range (about 1450-1550 rpm) when chipped, if no/inadequate hysteresis existed.

Live data shows that it happens right at that point of the Idle Switch activating, but try as I might, I couldn't capture a snapshot right as it happened. And to be honest, by the time we managed to get it to run for long enough to get a snapshot, my dinner was about to reappear 

I only ask because I know that on engines with very high torque output even DMF's experience a point of resonance (which the ECU map masks by backing the power slightly at certain revs).

Some engines are worse than others (e.g. Mitsubishi's require that you select different software for the two types of flywheel!).

Not sure on this one but, its possible that the MAP change does not account for this and hence the nasty point.....also hence why it may not occur on Auto's

[TheBoy]

Is it only manuals that are seeing the issue?

The RPM is happens at probably masks it from autos - auto would drop a peg, lifting the RPM above the zone this happens.


One theory was the idle switch, and with the power coming on strong at this rev range (about 1450-1550 rpm) when chipped, if no/inadequate hysteresis existed.

Live data shows that it happens right at that point of the Idle Switch activating, but try as I might, I couldn't capture a snapshot right as it happened. And to be honest, by the time we managed to get it to run for long enough to get a snapshot, my dinner was about to reappear 

I only ask because I know that on engines with very high torque output even DMF's experience a point of resonance (which the ECU map masks by backing the power slightly at certain revs).

Some engines are worse than others (e.g. Mitsubishi's require that you select different software for the two types of flywheel!).

Not sure on this one but, its possible that the MAP change does not account for this and hence the nasty point.....also hence why it may not occur on Auto's

Could the amount of effect be caused by variations in DMFs? Do DMFs wear (I know they fail sometimes)

[Marks DTM Calib]

They do wear which would make things worse.