After getting some info from Bob about the Turnigy chip I bought one straight away for my tiger. I loved it so much i got one for my panther also. Yes it does make it a little challenging for IR battles but what the heck. Thats half the fun plus it is much more realistic to hear those big Maybachs howl before the tanks start moving, just like in real life. I love that chip. Coolest little upgrade you can make IMO.