Which exhaust has the most gains?

Methodical4u

won't using the stock cats hold back the power a lot?

XwChriswX

This is where the LTH's come in...

FI LTHs + CBE is actually quieter than HFCs.

In cabin, windows up/windows down, still plenty quiet enough to enjoy music, or conversation. When you get on it, you hear what you want. Changes the tone of the exhaust to a slightly higher pitched note due to the increase in airflow. But the brute 'Volume' is actually less.

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Bonnie - Stage 2, Audio build coming this fall!
R.I.P. Abby 3/29/10 - 3/30/14

Methodical4u

yeah... I think eventually all i'm going to do to the car is the LTH's the CBE and the drop-ins with post maf tubes.

XwChriswX

That's exactly what I have right now.

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Bonnie - Stage 2, Audio build coming this fall!
R.I.P. Abby 3/29/10 - 3/30/14

XwChriswX

Here are my Dyno Vids:







I used my GoProHD on the window looking inside so you can see the RPM's and use that for the audio, since I stood behind with my phone to do the rear video's, so that's why the audio goes to crap. Just the sheer power is a bit much for the mic. Once I get a little more work done, I'll take some more dyno vids from a different angle.

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Bonnie - Stage 2, Audio build coming this fall!
R.I.P. Abby 3/29/10 - 3/30/14