Excellent responses. This is why I ask the questions. I do not want to mess with removing bumper for the cold air intake. I will take your advices a go with the others.
Also not doing the headers. Doesn't sound work it.
On so with the test pipes, do I understand this correctly?
1. Most hp gains are straight test pipes but loudest?
2. Second highest gains are resonated test pipes? Benefit being not as loud but still more hp than hfc?
3. Hfc are still upgrade to replacing cat but least amount of hp?
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