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My experience has been that the OEm exhaust system tends to be overly restrictive. It takes a ceratin amount of power to push the exhaust through the system opening things up a bit can help, assuming you don't mash the pedal too much.
Assuming you have a bit of creativity you might try a bit of creating an active exhaust system which would open things up a bit whenever the accelerator is pressed. It's an idea I initially learned about watching Top Gear, go figure. But it would give you the OEM quietness, but then by using a butterfly valve you would allow the excess pressure to escape a secondary exhaust system.
If you don't mind pissing off the neighbours you may want to remove the offending part to see if there is much difference. I suspect it would allow your turbo a bit of a quicker spool up which would obviously be helpful. if it were me, considering how it becomes more restrictive downstream I'd lop it off in a heartbeat. Invest in a high quality silencer with a larger diameter and you should be good to go.
And glad to hear from someone from the big island. Hope you enjoy yourself here.
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 RIP Maxima 1997-2012
Quote:
Originally Posted by jamesqf
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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