Muffler delete equals Rich condition

Sales@AAMComp · 08-17-2012, 09:46 AM

OP are you sure you didn't get the case of "my car is louder so my foot got heavier"? Theoretically a muffler delete really shouldn't have any plan in a/f ratios but I'd like to see what the outcome of this really is. I highly doubt it relates to the muffler delete

Maybe put the stocker back on and see if the mpg goes back?

kenny's 370z · 08-17-2012, 10:01 AM

i have done a muffler delete and tb bypass's.that was my first mods and when i bought the car,the computer said i was getting 18.5 miles to the gallon.after delete and bypasses,i havnt seen under 20.

Nak4mura · 05-22-2013, 07:36 PM

I just did the muffler delete last week and had the tips custom welded back on and sometimes usually when I am getting on it I can smell gas. I mentioned it to my buddy and he said it means its running rich. I asked the shop before hand if it could have any negative impact and they said no it will just change the sound. So if it is causing a rich condition (which would suck...) then I will go have the muffler put back on.

08-17-2012, 09:46 AM	#1 (permalink)
Sales@AAMComp A True Z Fanatic Join Date: Jul 2012 Location: Annapolis Junction, MD Posts: 4,079 Drives: GT-R Rep Power: 21	OP are you sure you didn't get the case of "my car is louder so my foot got heavier"? Theoretically a muffler delete really shouldn't have any plan in a/f ratios but I'd like to see what the outcome of this really is. I highly doubt it relates to the muffler delete Maybe put the stocker back on and see if the mpg goes back? __________________ Tyler Day, Technical Sales TylerD@aamcompetition.com 301-497-9214 Direct AAM Competition \| YouTube channel \| LIKE us on Facebook!

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08-17-2012, 10:01 AM	#2 (permalink)
kenny's 370z Base Member Join Date: Jun 2012 Location: TN Age: 59 Posts: 243 Drives: 2012 frontier sv v6 Rep Power: 13	i have done a muffler delete and tb bypass's.that was my first mods and when i bought the car,the computer said i was getting 18.5 miles to the gallon.after delete and bypasses,i havnt seen under 20.

05-22-2013, 07:36 PM	#3 (permalink)
Nak4mura Base Member Join Date: Jul 2012 Location: Puyallup WA Posts: 48 Drives: 2009 Nismo370z Rep Power: 13	I just did the muffler delete last week and had the tips custom welded back on and sometimes usually when I am getting on it I can smell gas. I mentioned it to my buddy and he said it means its running rich. I asked the shop before hand if it could have any negative impact and they said no it will just change the sound. So if it is causing a rich condition (which would suck...) then I will go have the muffler put back on.