| BC-Boy |
04-25-2014 09:43 PM |
Borla Catback Installed ! sounds like a Beast
So anyone who has seen my build thread knows i had a Greddy sp elite with a resonated frontpipe (invidia) Jdl Uel & overpipe.
Before the header the sound was smooth and tame not loud at all, after the header the rasp made its presence. I had to wrap my frontpipe to get rid of that thin wall pipe rasp like when you empty a cat, and also the backbox being a chamber type muffler had a good deal of rasp over 4000 it was allmost embarassing how raspy it was between 4000-6000, but there was 0 drone and a smooth tone in the cab where you could hear the engine as much as the exhaust. this setup made 184hp 145ftlbs tq i have the dynos in my build thread.
Now the Borla, install was fairly easy some rubber hangers were streched to the max making it hard to line up the tail pipes perfectly (OCD) but eveything fit smoothly (note the flange for donut gasket is ment for a 2.5in pipe and larger donut gasket than stock). Upon startup it was clear that there was no more rasp the sp elite had a insane rasp upon start up, the Borla just had a super deep bassy growl, driving its LOUD , not cruiseing but anytime you step on the gas its very deep and loud, very deep like having a sub woofer in the trunk running a constant deepass bass note. You cannot hear the engine anymore, BUT that deep tone is only until 4000rpm, past that the sound is absolutely mental , it has a nasty powerful,hi power sound to it, which the sp elite at that rpm started to rasp and sound like slapping thin steel sheets with a rubber mallet, the Borla sounds like a Beast ! if only i could tame the low drone than this exhaust would be perfect in every way.ALSO the boxxer rumble is much much more distinctive with this exhaust sounds like a 05 sti with strait 3in exhaust :)
Performance was noticeable at start up, like when i put the overpipe the engine had trouble finding its sweet spot to idle, it kept dipping and idleing high until finally it found a groove ,the car does seem to have more power and reading logs the mass airflow seems to have a tad bit higher reading truout the band,meaning that more air is allowed to flow tru the entire system, not a lot even hard to determine but it does seem to have freed up some air flow, Toni @ fa20club is reviewing my logs and im awaiting a updated file, then i will go back to the dyno for a last pull and see if im any closer to the 190hp mark i want to be at :)
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