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I think those are great gains for just an exhaust system/header. But it does show that there are some limitation to what you can gain, and I'm not seeing the gains on the top end like I want to.
Of course, this just means there is more restriction elsewhere. I'm just used to seeing higher output from engines rated at 200hp. this engine should be making 170whp easily in stock form. Sigh.
I feel there is going to be a lot of gains with ECU tuning and some bigger upgrades. Bolt ons are probably only going to get you to 180whp before you need a tune. After that, you may see 200whp max... all speculation of course.
Good work jason, I enjoy your posts immensely.
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