Hi I am very new to Subaru and have so may questions but i will start with whats the best first upgrades? I just got a 2003 wrx wagon with a automatic trans totally stock with 70,000 miles on it and I have been looking around the net and it looks like a uppipe and down pipe with a tune is the best bang for the buck i found a shop in my area that will do a Grimm speed uppipe and down pipe with a tune for around $1000 bucks it seems like a good deal but i am new to this and i don't know if Grimm speed is a good brand and if i need to do any thing to the car before i get the install? also how much difference will this make to my car like power increase, engine noise and will it shorten the life of the motor? sorry i am sure someone else has already posted something very similar to this but i haven't found it and i don't want to go off half . Potty Mouth .. Potty Mouth .. Potty Mouth .. Potty Mouth .ed and wast money and or screw up my car any feed back will be appreciated.