Fuel Economy with Air Intake and Performance Exhaust

All things Altima Coupe.
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Colton92
Posts: 783
Joined: Wed May 07, 2008 3:44 pm
Car: 2008 Nissan Altima Coupe 2.5S - WinterFrost
Location: Raleigh, NC

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Hey I was wondering if anyone had seen a increase in fuel economy after they added a air intake and performance exhaust. I'm thinking about getting a Stillen Exhaust and a Injen Cold Air Intake. Does anyone have these and if so what do you think?


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mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

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Injen intake added 1MPG for me (V6)

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johnny_d
Posts: 1305
Joined: Fri Oct 05, 2007 8:51 am
Car: 2008 Altima Coupe V6 SE w/ CVT

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as soon as i got intake and exhaust i started to step on it a bit harder, now i'm a bit more mellow :D

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adidas2go
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Joined: Thu Oct 18, 2007 9:49 am
Car: Cycle through all kinds of cars, trucks, motorcycles, and boats 🤙
Once upon a time: 1st turbo Altima Coupe
Location: Raleigh, NC

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Yea it does save gas with the better airflow, but with that sweet engine note between 4-6k. I cant win

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ESP
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Joined: Thu Apr 24, 2008 6:23 pm
Car: 2008 SexyBlack A/C
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I see you have the 2.5 as well...do you know if the Injen intake will fit the 6MT? I ask because on their website it specifically says "automatic only"........

chow
Posts: 501
Joined: Sun Aug 19, 2007 2:41 pm
Car: Altima coupe 3.5SE

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I have the Injen intake and Greddy Ti-C exhaust on my 3.5. I can say that i do notice a decrease in MPG (Im in canada so i cant directly convert, or am to lazy) but that may be due to two reasons:1) I like to drive the car harder now.. (Alot harder)2) It sounds cool when its up there in the RPM's.

So i cant infer that the dec in MPG is because of the performance setup or if it is because of me. Nonetheless the decrease isnt that much.. maybe .3l more.

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nogears909
Posts: 644
Joined: Thu Jan 31, 2008 3:38 pm
Car: 2008 Niagra Grey Coupe 2.5S CVT

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2.5 here and now that ive gotten over flooring it at every chance to hear the intake, my milege is actually a tiny bit better now

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dangeris
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Joined: Wed Sep 19, 2007 6:18 pm
Car: 08 Code Red 3.5
08 BMW 328xi Coupe
90 300ZX 2+0 NA
Location: Lansdale PA
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Colton92 wrote:Hey I was wondering if anyone had seen a increase in fuel economy after they added a air intake and performance exhaust. I'm thinking about getting a Stillen Exhaust and a Injen Cold Air Intake. Does anyone have these and if so what do you think?
Yup Have both of the same on a 3.5 and I travel 88 miles to work round trip so it is all highway for me. I've noticed that my mpg increased a little but as
adidas2go wrote:Yea it does save gas with the better airflow, but with that sweet engine note between 4-6k. I cant win

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D-Roll
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Joined: Tue Nov 20, 2007 3:24 am
Car: 08 Nissan 350Z Touring Coupe
Location: Ruskin FL
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ESP wrote:I see you have the 2.5 as well...do you know if the Injen intake will fit the 6MT? I ask because on their website it specifically says "automatic only"........
I have the Fujita SRI for auto, and I have the 6MT It fits just gotta make a lil adjustment when you mount the support bracket.

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LongBeachCoupe
Posts: 9482
Joined: Thu Aug 23, 2007 1:43 pm
Car: 08 Altima Coupe (RIP Hurricane Sandy)
2005 Lexus RX

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2.5 with fujita and nismo catback... i saw an increase from 23-24 to 26-27

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AzureCoupe0888
Posts: 216
Joined: Wed Apr 09, 2008 3:26 pm
Car: 2008 Azure Blue 3.5L SE Altima Coupe

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adidas2go wrote:Yea it does save gas with the better airflow, but with that sweet engine note between 4-6k. I cant win


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