TD4 miss on acceleration

after all the add on's I had the thig was playing up so I got rid of the all went back to a normal td4 withou add on's and it runs better than ever reaaly I can not see a reson to go putting things on a engin that will not make it really any better we all would like better econamy but when you have spent all that money think how many tanks full of the liquid gold that would fill plus with these "boosters" I was getting through more turbo hoses

All the "add ons" are really only a synergy 2 and and EGR bypass. It was fluttery before the synergy and it was smoking etc - now its sweet clean and fast - its a pleasure to drive honestly except for this acceleration thing in 1st and a bit in 2nd.

Anyone know if there is a performance curve going on in the ECU that only works on acceleration in low gears? Long shot as I don't know how they'd do that by hey you never know with LR.

I will get my head under the bonnet tomorrow - MOT due in a week!

Update

Today I took off the Synergy2 and Piesburg Maf - replacing it with my old Bosch one. I have sprayed electrical cleaner in and on all connectors I can see and open.

I took out the MAP and cleaned it and also the rail pressure sensor. I have no means of testing them though.

Everything reassembled - it started up instantly ticked over just as beautifully revved the same no smoke sounded just as good.

The miss is still there - or is it a miss - its more like a wobble !!!! Arrrghhh

Ok what could cause it - I cant tell if it's an electrical or fueling or mechanical fault now - I do know that with the synergy on and turned up high it makes it worse.

So any of you guys a guru - I would be happy to drive a pretty reasonable distance and supply beer tokens or even pay a going rate if you are a pro mechanic to diagnose it.

Flutter still there - took it for mot and it passed with no advisories.

I think it may be a second injector now showing up so will get another reconditioned but want to hear any other possibilities as well.
Cheers