Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
I fitted my di filippo 1-7/8 headers and 3inch system to my 2017 redline ute a fortnight ago, haven't retrofitted bimodal valves.
It's definitely louder but I wouldn't say it's crazy loud (compared to some of the previous subarus I've owned) Cold starts in a semi enclosed carport is were I noticed the most noise as it bounces around shaking the metal sheeting. Driving around normally I reckon it's reasonably sedate but when opened up it's much louder.
I compared the dpe and stock mufflers during fitment and they look extremely similar and reckon there's a good chance they'd be interchangeable (mine are both flat flanged) might give it a go this week off pending weather.
I fitted up the 1 7/8 and 3 inch system to my ls3 ute a while back, I love it, I planned to refit the bimodals but still haven't. No where as loud as I'd expected, can be driven without much noise, cold starts are noisy but that's about it.If anyone has this system what are your thoughts? I dont want a loud system.
Did you notice it was more responsive and more bottom end torque?I fitted up the 1 7/8 and 3 inch system to my ls3 ute a while back, I love it, I planned to refit the bimodals but still haven't. No where as loud as I'd expected, can be driven without much noise, cold starts are noisy but that's about it.
When you're talking such small numbers, other factors come into consideration. Big headers and big pipes just sound better.The bigger system might give you an extra 4hp above 6000rpm?
Below 2k I couldn't really tell any difference, 2-4k feels like it has more punch but could be a bit of a placebo effect as it sounds good now. When you wind it out you can tell it definitely has more go now then before, even without a tune yetDid you notice it was more responsive and more bottom end torque?