Another quick stillen exhaust review
Installed stillen exhaust today, and I'm extremely pleased with the results. This is my first mod with the Z so I went ahead and did dyno runs before and after.
Car put down 261 bone stock and 280 after the installation on a dynojet at Jotech in Dallas. These numbers were the average of three runs before and after the install with actual highs of 266 before and 283 after. In light of the fact that this is Dallas at around 80 degrees while raining outside I thought this to be extremely impressive.
On average I gained 19 horsepower on a bone stock 40th Z with just stillen catback and nothing else.
So far as the sound goes it's actually pretty mellow. Not as loud as I expected but it has a nice rumble under a load.
Pics to come shortly...
Last edited by Marcus Ryan; 09-25-2010 at 05:25 PM.
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