| Have you thought about what you are going to do for ECU? I do have an ECU with Nistune kicking around. You could go that route and put a base 740 map in. I would keep the car at waste gate boost (make sure you balance the waste gates BTW) until you can get a custom tune. The custom tune is what will really make your mods shine, and it'll be a lot safer than doing it on an off-the-shelf chip. Heck, after the tune, you might feel that you don't need to put any more upgrades as the performance will surprise you. From the sounds of it, you want a nice responding street car with the occasional fun on the track. You'll want to have good response which the manifolds will help you get a step closer to that. Down the road, you can do the additional breather mods if you feel the need for more.
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