if u go with 550cc there shouldn't be need for fpr , i can't guratee that, - but assuming u r not going to boost it more than 15 psi - fpr will be not needed, or get it and get 460cc instead.
The problem with E-manage is that not many people know how to tune it, and installation might be pain in the ass too, since it is still consider piggy back type of computer.
E-manage would be the best bet- sounds like it is the best deal for the money since it controls fuel curves and timing though - u will need to find somebody who knows what the f**k he is doing in order to install it properly and tune it.
E-manage is tuned by a laptop - therefore if u have one - u r cool - if u don't then u will never see actual digital display wtf is going on with your car, and u will always need to find somebody to borrow to adjust anything on the damn thing.
Why SAFc on the top of E-manage? They both have the same purpose.
You will probably better off getting full stand alone system in the long run considering that E-manage runs about $350 , if u add harness, monitor it is going to be more like $500 total. Install about at least $200, to tune it - who knows. An hour of tuning on the dyno cost here in Las Vgeas $150 plus optional wideband o2 sensor is another $50.
How many hours will it take somebody to figure out how to set the thing - nobody knows.
In conclusion, I wanted to make a pointer here - E-manage is not as popular as SAFC and therefore u will probabluy sink a lot of money to get the thing working properly, u will probably sink way more than just full stand alone and get it tuned (because if u went stand alone - u will know somebody who knows how to install it and set it).
E-manage is piggy back computer still. So is the SAFC.
Though SAFC is easy to set, no additional harness, digital display , but no timing contorl, easy to install, very popular piggy back computer ).
By the way - search on www.google.com for "buy E-manage" and u will find it everywhere.
Good luck bro.
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