Right now I have Greddy Evo3 Exhaust on my car and ETS intake. I'm planning to get ETS dump O2 eliminator downpipe, a test pipe ( I don't know which one yet, any suggestion?), ETS intercooler, ETS UICP and LICP. Is it good to bolt everything on at once or bolt things on one by one to see where it needs to be fix? Also I don't know if I should get an AP or get a custom tune.

 

i like to do full bolt ons then I tow for a tune just to be safe

 

Get a custom tune. the AP are a waste of money and full of bugs.

 

I'd get an AP. And THEN get a protune. The AP has a lot of nice little additional features that are pretty neat. Like being able to switch maps on the fly, restore stock tune if necessary, reads and clears codes, etc.
You don't have to buy a new one, get one used for less.

 

^ I second. If you bolt on one after one, you could work oyurself harder than replacing all at once.

 

yeah get a real tune, every upgrade affects your car performance even if its little you can improve it with a tune.

 

Get the AP. I have and now am going for custom tune E85/93 Octane.

 

Everything at once and tune, I drive like a grandmother hauling live hand grenades in the trunk when I drive to the tuner with multiple new bolt ons