Hfc + cbe = mpg

mults · 02-11-2012, 11:05 PM

With all of the discussions going on about which exhaust/high flow cats has the best sound, I am interested in what (if any) increase or decrease in the miles per gallon has been noticed. I am going to pull the plug next week on a Invidia Gemini CBE, CNT HFCs and K&N filters. Although I am more interested in the new found sound and performance of the new exhaust system, I am curious if the MPG is affected? I would guess that the MPG would increase slightly (if you can keep your foot out of it).

6MT · 02-11-2012, 11:11 PM

My question to you is: "Why are you concerned with MPG?". Just a question.

mults · 02-11-2012, 11:34 PM

Quote:

Originally Posted by 6MT

My question to you is: "Why are you concerned with MPG?". Just a question.

I'm not really concerned about the MPG, but I thought it may be a good topic for discussion. By the way, the Z gets better mileage than my 2003 Hyundai Santa Fe.

6MT · 02-11-2012, 11:36 PM

Fair enough. Just seems moot to me.

Vbp6US · 03-01-2012, 03:11 AM

Valid question considering some part manufacturers advertise an increase in mpg.

SS_Firehawk · 03-01-2012, 10:09 AM

If your not throwing a code the mpg increases. I gained a minimum of 1/2-1 mpg with no code. Then SES kicked on and that dropped 2 mpg. I'm obviously running a tad rich :P

MaDMaXX · 03-01-2012, 04:28 PM

Ses?

Cmike2780 · 03-01-2012, 04:32 PM

Quote:

Originally Posted by MaDMaXX

Ses?

Sex Engine Light or Service Engine Soon........it's one of those

SS_Firehawk · 03-01-2012, 05:12 PM

I think my Wife needs a Sex engine light so I can stop guessing when she's in the mood. Hell throw in an OBD2 sensor so I can figure out what code she's throwing when she's pissed.

Vbp6US · 03-03-2012, 01:25 PM

Quote:

Originally Posted by SS_Firehawk

I think my Wife needs a Sex engine light so I can stop guessing when she's in the mood. Hell throw in an OBD2 sensor so I can figure out what code she's throwing when she's pissed.

LOL!

Huck · 03-03-2012, 02:21 PM

It's been scientifically proven that your mpg goes way down because you can't keep from revving it out to hear that sweet exhaust sound.

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canes7 · 03-03-2012, 05:10 PM

Quote:

Originally Posted by Huck

It's been scientifically proven that your mpg goes way down because you can't keep from revving it out to hear that sweet exhaust sound.

I agree. However, more power from the same size engine usually means you have improved efficiency. More efficiency usually means better mileage, which is usually cancelled out wth your right foot.

Huck · 03-05-2012, 05:25 PM

Haha I used the mpg argument with my parents back in the day to make them let me get an intake on my civic. It worked too. But yeah, right now all I have is the Stillen G3 cai's and I step in it every chance I get to hear her growl at me some

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SS_Firehawk · 03-09-2012, 12:51 PM

Definitely get your car tuned if it's throwing a code... Mpg goes down the drain. I averaged 16.7mpg with 70% freeway driving on my last tank of gas. before the code I was averaging about 19mpg 50/50 city/freeway.

02-11-2012, 11:05 PM	#1 (permalink)
mults A True Z Fanatic Join Date: Aug 2011 Location: Cleveland, OH Age: 70 Posts: 1,830 Drives: 2010 (40th) #706 Rep Power: 16886	Hfc + cbe = mpg With all of the discussions going on about which exhaust/high flow cats has the best sound, I am interested in what (if any) increase or decrease in the miles per gallon has been noticed. I am going to pull the plug next week on a Invidia Gemini CBE, CNT HFCs and K&N filters. Although I am more interested in the new found sound and performance of the new exhaust system, I am curious if the MPG is affected? I would guess that the MPG would increase slightly (if you can keep your foot out of it). __________________ mults 40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune) Build Date/Number: 1/27/2010 #706 Berk HFC + CBE, R2C CAI, Clear Bra, Cleveland Z Club

02-11-2012, 11:11 PM	#2 (permalink)
6MT A True Z Fanatic Join Date: May 2009 Location: ITU Zone 2 Posts: 22,459 Drives: Reliant Robin Rep Power: 1790	My question to you is: "Why are you concerned with MPG?". Just a question. __________________ Andrew 2009 370Z Sport/Touring 6MT sold 2013 Honda Civic Si coupe D/D Last edited by 6MT; 02-11-2012 at 11:18 PM.

02-11-2012, 11:36 PM	#4 (permalink)
6MT A True Z Fanatic Join Date: May 2009 Location: ITU Zone 2 Posts: 22,459 Drives: Reliant Robin Rep Power: 1790	Fair enough. Just seems moot to me. __________________ Andrew 2009 370Z Sport/Touring 6MT sold 2013 Honda Civic Si coupe D/D

03-01-2012, 10:09 AM	#6 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	If your not throwing a code the mpg increases. I gained a minimum of 1/2-1 mpg with no code. Then SES kicked on and that dropped 2 mpg. I'm obviously running a tad rich :P __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

03-01-2012, 05:12 PM	#9 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I think my Wife needs a Sex engine light so I can stop guessing when she's in the mood. Hell throw in an OBD2 sensor so I can figure out what code she's throwing when she's pissed. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

03-01-2012, 03:11 AM	#5 (permalink)
Vbp6US Enthusiast Member Join Date: Nov 2011 Location: SoCal Posts: 442 Drives: 2009 370z MB 6MT Rep Power: 14	Valid question considering some part manufacturers advertise an increase in mpg.

03-01-2012, 04:28 PM	#7 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 14	Ses?

03-03-2012, 02:21 PM	#11 (permalink)
Huck A True Z Fanatic Join Date: Jan 2012 Location: Cocoa, Florida Age: 42 Posts: 5,075 Drives: Pantydropper machine Rep Power: 34	It's been scientifically proven that your mpg goes way down because you can't keep from revving it out to hear that sweet exhaust sound. --- I am here: http://maps.google.com/maps?ll=28.354338,-80.686326 Sent from my iPhizzle using magic and new fangled science stuff __________________ VLEDS \| Evo-R \| Moddiction \| CF Hood Struts \| F.I. CF CBE & LTH \| Stillen CAI \| NST Pulleys \| UpRev \| Z1 \| M7 \| Status \| Forgestar \| PSS \| Whiteline \| SPL \| SPC \| Kenwood \| Zenclosure \| Kicker \| Alpine Type R

03-05-2012, 05:25 PM	#13 (permalink)
Huck A True Z Fanatic Join Date: Jan 2012 Location: Cocoa, Florida Age: 42 Posts: 5,075 Drives: Pantydropper machine Rep Power: 34	Haha I used the mpg argument with my parents back in the day to make them let me get an intake on my civic. It worked too. But yeah, right now all I have is the Stillen G3 cai's and I step in it every chance I get to hear her growl at me some --- I am here: http://maps.google.com/maps?ll=28.354296,-80.686353 Sent from my iPhizzle using magic and new fangled science stuff __________________ VLEDS \| Evo-R \| Moddiction \| CF Hood Struts \| F.I. CF CBE & LTH \| Stillen CAI \| NST Pulleys \| UpRev \| Z1 \| M7 \| Status \| Forgestar \| PSS \| Whiteline \| SPL \| SPC \| Kenwood \| Zenclosure \| Kicker \| Alpine Type R

03-09-2012, 12:51 PM	#14 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Definitely get your car tuned if it's throwing a code... Mpg goes down the drain. I averaged 16.7mpg with 70% freeway driving on my last tank of gas. before the code I was averaging about 19mpg 50/50 city/freeway. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction