Is there any differences between the engine back in 04 then the new engine i will be recieveing under warrenty? im assuming they have fixed the critical errors but horsepower wise?

 

Not really, same engine, just rebuilt from good parts from other blown motors and some new parts. It will have an updated water pump though.

 

...and this time, take care of it. Check the oil and replace plugs, coils, and wires as needed. You'll be glad you did.

 

I've been taking good care of my engine. It runs perfectly normal and nothing has been going wrong, but Mazda said the compression wasnt up to standard so they decided to replace it anyways haha.

Hopefully no issues arise with the so called "new" motor.

 

Search around, you may get unlucky and have to have that one replaced. Some of the refurbs are bad straight from the factory. I hope yours works fine though.

The errors and things they fixed were just flash updates for the most part I think, so you should be good to go there.