Miker Posted March 20, 2012 Share Posted March 20, 2012 Guys i have a 2007 Hawkeye with PPP pack and Exhaust, i dont know whether its because its the 2.5Lt engine but the exhaust note does not seem as loud as other Impreza's driving around. This has got me thinking about ow to get a better sound out of it, bit more grunt and burble. Any thoughts or recommendations ? Mike ;) Quote Link to comment Share on other sites More sharing options...
nodmeister Posted March 21, 2012 Share Posted March 21, 2012 i have the same set-up, think the only way you can get more rumble is replace your back box, you might have to get it custom fitted due to the rear diffuser on Hawk-eyes, you can buy ones that will fit but limited, its worth having a look here http://just-subaru.c...ye-79037-0.html Quote Link to comment Share on other sites More sharing options...
Miker Posted March 21, 2012 Author Share Posted March 21, 2012 Cobra sport back box gets good reviews and a good price as well. I have read something about taking the middle silencer out and fitting a straight pipe instead??? Quote Link to comment Share on other sites More sharing options...
Melanie Hayman Posted April 19, 2012 Share Posted April 19, 2012 I have the 2.5ltr Hawk too but I cant grumble with the sound.... I have a TSL stainless steel system = sports cat, straight through 3' TSL stainless steel centre section into a TSL backbox - looks the business and sounds great !!! ;) Quote Link to comment Share on other sites More sharing options...
FR02 MAK Posted March 12, 2013 Share Posted March 12, 2013 tomi headers &up pipe afterburner/hayward&scott down pipe mid section and back box all 3inch for ultimate flat four burble ;) Quote Link to comment Share on other sites More sharing options...
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