seen yr car in tullow lad with the tdo4 and tdo5 was flying with the tdo4.. with the tdo5 it was alot slower so i can see were your coming from.. what boost were you running on the tdo5?
i have run a td04 and 05 at a bar and td04 was way faster- 1 bar on a td05 isnt even in its cooking zone.
was your car tuned with both turbo ted/madman? as the map will play a big part
look iv managed to covince a few tdo4 heads to go tdo5 and the said they would never go back and all ran near 1 bar on standerd ecu's.. iv seen them race both cars @ 1 bar and the tdo5 comes out on top every time..