Definitely, once you get your wastegate tension set the way you want it. Also, make sure all of your inlet path is good and clean; ive seen a lot of boost issues from flexible inlet/intake pipes collapsing or kinking.

Another thing that can give you over boost issues is spark plug gap too lage and a very rich mixture. At times you will not a have a misfire but a large gap will cause unburnt fuel to collect in the turbine side ( turbo ) and then ignite. The ignition of the fuel will give you a boost spike and surging . The ignition inside the turbo will not make any noise ( back fire ) but it will over spool the turbo for a splitt second. I hope i am not sending you on a wild goose chase. I hope this helps you too.

Lee

Ok so I've been over the car pretty well now.

- I've adjusted the WG, at ~70% wgdc high rpm now so much better
- Gone over all vacuum/boost pipes and checked for any leaks
- Cleaned TB

I've also rescaled KFMIOP/KZWOP(2) and altered their values accordingly as I thought this could have an effect on the throttle oscillations up top.

Took it for a run and it's no better I disconnected the N75 which made no difference (apart from boost). When I disconnected the MAF however it requested a dead flat 100% throttle angle, with .3/4% throttle oscillations which I think is just signal noise.

I understand running without the MAF it defaults to predicted readings, so could this mean I possibly have a faulty MAF? Anyone know what things can intervene slightly with the throttle angle?

Looking here http://nyet.org/cars/info/Translated%20Funktionsrahmen%20Modules%20(10-01-2012).pdf I can see there's a few things, maybe cylinder charge maps?

I get these symptoms on both my mapped file and standard file so it's gotta be a hardware issue I think...

Again, although only 3% in the ideal world I'd at least know what it is so any ideas are appreciated

Since it's in request I would say the potentiometer in your pedal is failing. There are 2 for plausibility diagnosis, I bet one is off. I have seen quite a few request 70-80 percent when failing and not cause codes. Your failure seems less likely, but possible.

Again, a couple percent is kinda irrelevant in the grand scheme of things, but it will not get better, only worse.

That's what I thought... My pedal position stays on 100% in the first few logs I done of it, I've not bothered to log it anymore (me7 kept crashing for having too much going on), next logs I do I'll add it on.

I've noticed though sometimes when I start it the car has a little hiccup, almost like a misfire. I started it tonight and it almost stalled and EPC and traction light came on so I grabbed the codes fast.

Coincidentally they are P1544 (throttle signal too high) and P1172 (throttle signal too low). I've also got P1062 (power supply terminal 30: too low - intermittent).

I have a feeling it maybe something silly like a bad earth... I put a new engine in a few weeks ago so things have been apart. Sound reasonable?

I shall do on the next log (tomorrow most likely), previously I logged pedal position and actual throttle angle, then later replaced pedal position with throttle and requested, I'll add it for completion purposes though.

Would these kind of symptoms appear if the TB wasn't calibrated? Not being calibrated as a result of some kind of power cut somewhere whilst cranking and starting the car before the TB can adapt/set. Just thinking aloud here... Apologies if I'm not making sense

Wow. Very strange. Your load is also very noisy... but your RPM and MAF signals are not.