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efine · 08-03-2008, 04:47 PM

I posted this on a different thread in relation to Gas Mileage, and I did my MAGNA-FLOW mods before I found this site. While under the car, I only saw one Cat., a resonator, and a muffler, not three Cats! Where are they?
Good luck... efine

Gas Mileage

All I can say is:

2005 EX-L...just purchased. One owner, lease turnback, CA car, clean as a whistle, w/17,142 miles.......$18,400!. This car is so clean, when I put the new Honda Hitch on, the empty holes that had nuts welded in place on the underside of the body didn't even have any dirt in them!!]
I put in a K&N air filter ($50.00), tore off the stock resonator and rear muffler & rear heat shroud , put in a stainless MagnaFlow Muffler at the resonator spot, and ran a custom bent, stock diameter size pipe, out the back ($248.00 installed). Gave it a small boost in giddy-up, a growl when you push your foot down and at startup which is not noticeable at cruise. Just returned from a 657 mile trip. I filled up at 10 PM just before the freeway on-ramp on the return trip and travelled over 300 miles on that leg straight home, North on I-5 from south of Portland, OR, to Bellingham, WA in one shot..26 MPG Highway at 70-80 MPH most of the way, with cruise control on as much as possible (est. 95% of the time). Yes, I double checked my math!
I also added Techron Fuel-Injector Cleaner to the tank (Costco buy), put 36 PSI in all four, new Oil & Filter, & new Honda Oil in rear end just before I left.
It will take me a while to re-coup the $300.00 spent on the mods from the gas savings, but I usually keep my cars for 10 years, so I figure it will come back to me eventually.
If you want it to be even quieter, you can put a MagnaFlow resonator on as well, but I can't say exactly how much quieter it would be, or what the MPG change might be. The reason we put the new muffler in the resonator spot instead of at the back where the old one was, was to eliminate that tinny, brapping sound most of the "tuner" cars make with their mufflers at the back and a large hole protruding from under the bumper. This, and the suggestion to use stock diameter pipe, came from the chop shop kid as a way to reduce and "tune" the noise without having to add the resonator.
Good luck.
E

08-03-2008, 04:47 PM	#9 (permalink)
efine Junior Member Join Date: Jul 2008 Location: Bellingham, WA Posts: 7	MAGNA-FLOW Performance I posted this on a different thread in relation to Gas Mileage, and I did my MAGNA-FLOW mods before I found this site. While under the car, I only saw one Cat., a resonator, and a muffler, not three Cats! Where are they? Good luck... efine Gas Mileage All I can say is: 2005 EX-L...just purchased. One owner, lease turnback, CA car, clean as a whistle, w/17,142 miles.......$18,400!. This car is so clean, when I put the new Honda Hitch on, the empty holes that had nuts welded in place on the underside of the body didn't even have any dirt in them!!] I put in a K&N air filter ($50.00), tore off the stock resonator and rear muffler & rear heat shroud , put in a stainless MagnaFlow Muffler at the resonator spot, and ran a custom bent, stock diameter size pipe, out the back ($248.00 installed). Gave it a small boost in giddy-up, a growl when you push your foot down and at startup which is not noticeable at cruise. Just returned from a 657 mile trip. I filled up at 10 PM just before the freeway on-ramp on the return trip and travelled over 300 miles on that leg straight home, North on I-5 from south of Portland, OR, to Bellingham, WA in one shot..26 MPG Highway at 70-80 MPH most of the way, with cruise control on as much as possible (est. 95% of the time). Yes, I double checked my math! I also added Techron Fuel-Injector Cleaner to the tank (Costco buy), put 36 PSI in all four, new Oil & Filter, & new Honda Oil in rear end just before I left. It will take me a while to re-coup the $300.00 spent on the mods from the gas savings, but I usually keep my cars for 10 years, so I figure it will come back to me eventually. If you want it to be even quieter, you can put a MagnaFlow resonator on as well, but I can't say exactly how much quieter it would be, or what the MPG change might be. The reason we put the new muffler in the resonator spot instead of at the back where the old one was, was to eliminate that tinny, brapping sound most of the "tuner" cars make with their mufflers at the back and a large hole protruding from under the bumper. This, and the suggestion to use stock diameter pipe, came from the chop shop kid as a way to reduce and "tune" the noise without having to add the resonator. Good luck. E