Tick by Tick data anyone? These files contain one year of tick by tick M1 EURUSD. Thank God for solid connections, eh? ...a Gift for everyone who contributes to this wonderful forum. It took me a long time to score this little gem, so Enjoy!

Instructions:
Before coping the files to their appropriate places you should close MT4, otherwise the data may become corrupt.

EURUSD1_0.fxt needs to be placed in “C:\Program Files\MetaTrader\tester\history” folder.
EURUSD1.hst needs to be placed in “C:\Program Files\MetaTrader\history\InterbankFX-Demo” folder.

In MT4 we have two groups of symbols. We have a group of symbols for STD accounts, and then we have another group for minis (where an m is appended to the STD symbols). The rates we publish for STD account and minis are exactly the same. But MT4 has different symbols for them, and we have chosen to stick to using the STD symbols for back testing purposes. If you have not already opened a STD demo account in MT4 you will need to before the data you downloaded is usable in MT4. If you plan to use a STD demo account and a mini demo account, make sure you are logged into the STD demo before you try to use this tick data on back tests, otherwise you will not get the result you expect.

When you have MT4 and the Tester window up, you should have something that looks like the picture I have attached. You should have the name of the Expert Advisor you want to do a back test on in the Expert Advisor field. To use the data I gave you, you need to have 4 fields with specific settings.
1) Symbol is set to EURUSD (not EURUSDm)
2) Model is set to Every tick (based on all available least timeframes with fractal interpolation of every tick)
3) Period set to M1
4) Recalculate needs to be un-checked.
The other settings you can set to what you want. Use date is used to back test only a certain time range. If Optimization is set, the back tester will do multiple passes, tests, depending on what you have setup in the Expert properties dialog. When you have what you want you click Start and it will start the test(s).