I replaced my flowmaster 40 series , log manifolds and compression bendt variable diameter non x-pipe exhaust with no tips.
To Pypes sgf11-R 2.5" full length exhaust and pypes hokeystick tips, also did change over to headman 1 3/4" primary full lengt headers.
The change was nigth and day from a bad drone at 2500-ish rpm to silent , no kiding it is silent i hear roadnoise, my rockerarms and the fuelinjectors. but under part throtttle and acceleration i hear the exhaust, at full throttle it is loud.
i am very happy with the pypes system
Short idle comparison:
[youtube]http://www.youtube.com/watch?v=chnU5Es22VQ[/youtube]
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Murphy's law - "Anything that can go wrong will go wrong".
-469 ,Butler 310+ Eheads, Hurricane intake portmatched by butler, Butler roller 230/236 @0.50 112 LSA, Johnson lifters, pypes 2 1/2" exhaust, 3.42 yukon duragrip lsd, holley sniper efi, hyperfuel efi tank +++
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