i like the FI myself and you can buy a bigger chip and replace the inj. if needed. the idea behind the EFI and EI is getting the max. HP out of your motor and a cleaner burn. thats why you can drive a 13 sec. LT1 to the strip getting 22 MPG. on the down side you need to understand what you are driving so you can have some confidence in it. get yourself a book and learn something about the TB, when everything is right its pretty much maintance free. JMO