Had some issues in the meantime with my LFR.
There was a nasty cam belt shearing last October, replaced the 8 exhaust valves with new ones, replaced also worn piston rings and all gaskets on the engine (except for the PowerGasket on the intake manifold).
Also checked for any possible error code, there were none.
After 7000kms (~4300 miles) of breaking-in, the car still feels a bit sluggish than previously.
Checked the 0-60 time, both in 28-32°C and 20°C outside temperature. The average stopwatch time from 12 pulls has been in both cases 7.00 sec compared to 6.4-6.6 sec previously.
There will be a new dyno test made next week, I expect some decrease in power.
Car runs fine, much better than before valve/head job, there is less vibration at idle, smoother acceleration, no sign of stutter or flat spot. However, there is also less wheelspin in 1st gear, very little wheelspin in 2nd and practically none in 3rd, while before I could spin the wheels even in 3rd gear.
Boost raises just as good as before and even a bit quicker. However, there is a laggy sensation, like the car pulls a fraction of a second
after the boost jumped on the gauge.
All hoses have been checked except the dreaded hose which runs from charge pipe to pancake pipe behind right side wheel, but I will also check it and seal better the O-ring with RTV silicone at the slightest sign of play.
I wonder what the heck can eat my power and slow my 0-60 times even after the major head repair. As far as I can judge it, if boost is just as before, gasoline just so since no component of the fuel system has been replaced, and compression is better (new piston rings) I see no reason for power loss.
And all common reasons for power loss on a 1.8T (cam belt off, split vacuum hose, boost leak, poor ignition coils etc) come with vibration, noise, fluctuating boost and poor road manners, while my car runs better and smoother than before
Thank you,
~Nautilus