Fuel smell after installed MD ART/Exhaust
#1
Fuel smell after installed MD ART/Exhaust
So I installed the MD ART/Exhaust combo on my 2007 350z HR and I got a dynotune (292 rwhp). The fuel smell is still present, and I wish I knew that removing the cats and installing test pipes would create this fuel smell. I even did a decent amount of reading on the forums and it wasn't brought up. Sigh. This fuel smell (running rich) is also causing the exhaust to making popping noises, which I personally am not the biggest fan of.
So this leads me to my question: How can I get rid of this smell? Do I need another dynotune to raise the Fuel/Air mixture? Would a dyno do anything? Would me trying to run lean do anything?
So this leads me to my question: How can I get rid of this smell? Do I need another dynotune to raise the Fuel/Air mixture? Would a dyno do anything? Would me trying to run lean do anything?
#4
I just sold the OEM cats. Also, the MD exhaust plus oem cats made my car REALLY loud. Like even too loud in the cabin with music loud. Funny though
What aftermarket cats would you recommend for my current setup? Would I need a new dyno? Would cats result in HP/torque loss over MD ARTs? Also, I want to get a supercharger installed in the next 6-12 months. Would an SC make the fuel smell better or worse?
K&N Dropfilters
MD ART
MD Exhaust
What aftermarket cats would you recommend for my current setup? Would I need a new dyno? Would cats result in HP/torque loss over MD ARTs? Also, I want to get a supercharger installed in the next 6-12 months. Would an SC make the fuel smell better or worse?
K&N Dropfilters
MD ART
MD Exhaust
Last edited by Rev_Night; 09-03-2015 at 08:58 AM.
#5
Master
iTrader: (8)
it would have less of smell. motordyne has a hfc module you can get. by going back to cats you will gain some torque and lose a couple horses.. nothing major. could you live without a retune, yeah sure... would you get more of the car and mods to retune it, i would.
when looking at cats, look at the cell count. i had kinetix and they were okay, alot of people like berk
you are smelling pure exhaust right now, the cats remove or convert some of the elements. if you want to know all the specifics this is a pretty good read
http://www.explorecuriocity.org/Cont...contentid=1779
when looking at cats, look at the cell count. i had kinetix and they were okay, alot of people like berk
you are smelling pure exhaust right now, the cats remove or convert some of the elements. if you want to know all the specifics this is a pretty good read
http://www.explorecuriocity.org/Cont...contentid=1779
#7
Looking at the MD site, I see an "XYZ Catalytic Converter" and then a "350Z XYZ pipe with HFC". I don't understand how either would them would fit with the rest of the ART/Exhaust, even if you did remove the ARTs. The attachments are too different (bolts vs clamp)
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PP08HR (09-03-2015)
#10
New Member
iTrader: (9)
I might be misinterpreting what you're saying. But, as far as I know on the MotorDyne exhaust the red arrow is the HFC module, it can also be a cat, or straight pipe depending on which piece you bought. I believe the full exhaust comes with the HFC standard (could be wrong). However, that piece is removable as it is attached using a v-band clamp.
#14
yeah, that may be my only option. I actually called him earlier today he said that the smell is def because of no cats. However, he said that exhaust pops shouldnt be there, even with no cats. The pops mean too much fuel is being used/burned, and that happens before the cats, so I'm running rich. I need to call PTunning (Manassass, Va) and have them increase the fuel/air ratio.
I called PT and they said that they could do a dynopull to check the F/A, but they just did a dynotune on it 2 weeks ago. Could it be that they missed something? I get that the smell would exist, but why the pops?
Then I made this thread.
I called PT and they said that they could do a dynopull to check the F/A, but they just did a dynotune on it 2 weeks ago. Could it be that they missed something? I get that the smell would exist, but why the pops?
Then I made this thread.
#16
I hear the pops when RPMs go down. So this generally happens after I do a big RPM increase like you were doing, and then putting it into a higher gear. Basically alot like yours.
Was yours tuned properly in that clip?
Was yours tuned properly in that clip?
Last edited by Rev_Night; 09-03-2015 at 04:53 PM.
#17
Super Moderator
MY350Z.COM
MY350Z.COM
iTrader: (8)
I'm still trying to figure out when people would get rid of OEM cats. I can understand if they are bad or the car is a dedicated track car but.......
#20
right, but i didnt know there would be an accompanying fuel smell + pops. I read that somepeople like the pops -- personally i hate them.
Im going to call Ptuning again tomorrow. Ask them if I am running rich (fuel smell + existence of pops), if we could try to run the car a bit leaner. Hopefully would remove both, and the performance hit can't be more then 1-2%
Im going to call Ptuning again tomorrow. Ask them if I am running rich (fuel smell + existence of pops), if we could try to run the car a bit leaner. Hopefully would remove both, and the performance hit can't be more then 1-2%