As you mentioned in you other post, you have a T7 car. Changing the boost setting this way will not help you much power wise. AFAIK, the T7 looks for a preset amount of air being brought into the engine for a given rpm. When you turn up the boost, it consequently partially closes the electronic throttle to shoot for the target volume of air. Therefore, doing what you have done probably didn't help very much power wise. I do recommend, however, going for a good ECU upgrade after performing intake and exhaust mods I touched on in your other post. There are many tuners out there that have T7 ECU upgrades. Here is a list in no particular order: Hirsch Performance, Abbott Racing, Maptun, Speedparts, SQR, Nordic, ChipCenter, Swedish Dynamics, BSR and perhaps a few others I have failed to remember. Do your shopping so you get what you want. Anyways, this is a much safer way to raise boost and overall power on a Tionic car since it will retain the APC's function. The APC controls the boost and can back off the boost when detonation or knocking occurs. If you deffeat or other wise alter this system, the ECU may or may not be able to protect itself from knocking. Just something to think about.
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