Umm.. no.. I've had my TBE on my car for about 6 months w/out a tune and there is with out a doubt quite a bit more torque down low, with a little more power on top. If it makes you that much slower, then how come there are video's of people going 12.5 and lower with just a TBE untuned?
So to answer the OP's original question, NO you don't need a tune right after you get a TBE. And as stated above, get the other stuff as well before you get a tune. At minimal a MBC, drop-in air filter, a WB02 and boost gauge, then you could go for a tune. Maybe a 255 fuel pump as well to be safe.
But just starting out you do not need to upgrade the intercooler or piping.

 

ok why is it that ive gone head to head against the exact same year and model evo as mine and whooped the guys ***? we even used the jack of trades dyno simulator to see how they matched up on there both in the same sections of road? you cant tell me that its a "drivers race" if its from a roll. they guy even rode in my car and said it was faster than his, so are you saying i have a factory freak? i dont think so. the guy had a catless buschur tbe and buschur intake filter

 

well first of all,all cars are different even if they are the same make and model.My car with the same fuel,mods,same car tuned by the same guy on the same dyno 10 mins apart.He put down 27 more hp and 19 lbs tq then me.Sam everything.second,how would it make your car slower?so all other models of cars that has an untunable stock ecu get slower with mods?

 

well when he was stock we were neck and neck every time

 

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