Running FI with Downpipe’s with high flow cats. I couldn’t imagine those with catless DP. With valves open car is really loud. Cold start as mentioned is crazy loud. I am running bm3 and actually turned cold start back on to hopefully extend the life of my cats
With valves closed sound is perfect for day to
Day. Def hear the difference and not too much.
I love my FI system. One of the most unique sounding systems
Quote:
Originally Posted by F3085258
I would not have bought it new. Too expensive. I was going to put e cut outs just before the muffler to have a louder mode.
With valves open there is drone at low cruising RPMs. I will have to check the rpm again. It is very and I mean very loud with the valves open at WOT. Or on manual down shift in sport (level 3?). Sound is amazing. Regular acceleration is fairly loud and Sound is good if a bit industrial like most turbo cars.
With valves closed, no drone and can't hear any exhaust noise inside car at all.
Haven't had time to get video.
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