I was wondering if I bought a sct tuner and a jlt intake would that void my warranty or change my compression? Just a rookie question.

 

You have an 06?
I am assuming you bought the extended warranty?

The question is tricky. Technically no it wont because under law ford has to prove that your mod caused the fault if fault occurs with something. (example: You install an intake and then for some reason something went wrong, it would have to be the fault of the intake for that thing going wrong).

However dealerships will often tell you yes it will void the warranty and you would have to fight them if something happened.
Which could in theory be very hard to do and also could be costly if by some weird happening something huge went wrong and you had to hire a lawyer.
Yes that would be extreme but it could happen.

The friendliness and tolerance of mods varies from dealership to dealership though.

 

It is impossible to change the compression of the engine without changing something mechanical (crankshaft, connecting rods, engine block, or cylinder head). You can easily go back and forth between stock and an intake/tune in under 30 minutes. If you have trouble, just swap it back to stock. The tune recalibrates the gas pedal so that it is more responsive and also makes the spark plugs ignite slightly sooner (advanced timing) so that more power can be made which usually requires higher octane fuel.

 

useful info thanks