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with the piggy back it will feel faster and actually be faster, now will it be a big gain like adding nitrous or a turbo? No. You will notice a difference though, not only will the piggy back optimize your fuel and ignition mapping to bring out the extra performance hidden in there but it will also maximize gains from other mods such as your intake or exhuast and so on. Also with the piggy back for the Auto from RRM I would imagine they would optimize other things such as shift points etc. So yes you will notice performance gains. Is it worth the money? To me at first no it wasnt, instead of paying $500 for a piggy back, I spent $200 on a wet nitrous system, custom made a short ram intake for free, grabed some used drag radials for $20 and two 15in aluminum wheels from the junk yard for $50. So for about $270-$300 Im now able to stomp on srt4's, mustangs, and alot of other cars. Im at the point now though where i cant go any faster without the piggy back to tune the car to handle more nitrous. So depending how far you mod your RA or how fast you want to go you will end up getting the piggy back or some form of tuning.
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