My Thundermax Ecm went out on my 04 Roadglide and I am going to have to replace it. I had a race tuner on a 07 Streetglidea few years back and never had any issues with it. Does anybody have experiance with these 2 products and have any input on how they compare performance wise?

 

Did your thundermax have some sort of o2 sensors or was it a simple flash into the ECM? I know the 04's didn't come with o2 sensors but was not sure if the unit you were using had any autotune capability.

Otherwise on a stock 04, you would probably do just as good using a power commander or if you didn't want a piggy back using a SERT to dyno tune the stock ECM.