[Official] "Do I need a tune with bolt-ons?" thread

[Baer383]

Originally Posted by dc3843

Baer383, who do you go through for tuning? They use an EPROM or you have an aftermarket ecu? The only experience I have with tuning cars is my 300zx tt and that's 20 years old

I tuned mine myself using Uprev, I get on everybody about this topic b/c the ECU can only compensate so much 100% is on the money 75% is as far as it can go to remove fuel and 125% is as far as it will go to add fuel,if you do mods and don't get it checked you don't know where you are.
Let say your at 125% at 4500 rpm and don't tune/check it and your ECU get into sees that it still has to add 3% more it can't b/c your maxed out at 125% that's why I tell people to at least go get it checked just to make sure.