Added benefit from HFC's...

Red370 · 12-24-2009, 11:00 PM

3 MPG more than what I had prior to installation, first time I actually took the time to test it, Temp was 39, cruising from Las Cruces, NM to El Paso, TX. And with an SES light to boot! 32mpg... 370Z: EconoSport.

mspeasl · 12-24-2009, 11:08 PM

Quote:

Originally Posted by Red370

3 MPG more than what I had prior to installation, first time I actually took the time to test it, Temp was 39, cruising from Las Cruces, NM to El Paso, TX. And with an SES light to boot! 32mpg... 370Z: EconoSport.

was that 32 by doing the math or just by the on board computer..........?

370zdub · 12-24-2009, 11:26 PM

My on board computer reads 19.9 at best! My best hand calculation was 20.3 also, how are you guys getting that kind of mileage?

Zsteve · 12-24-2009, 11:30 PM

21.4 overall with the 7AT and Im kinda of a heavy foot driver but when not trying to beat everyone the AT keeps rpms down and gets good MPG.

Red370 · 12-25-2009, 12:17 AM

Quote:

Originally Posted by mspeasl

was that 32 by doing the math or just by the on board computer..........?

On board computer, I wanted to do a comparo with its reading before and after HFC's, the before average at the same speed and distance traveled was 29.1, using the onboard computer with practically the same variables equated to a gain of 3 mpg, not bad.

G37Sam · 12-25-2009, 03:22 AM

Yeah I do have a lead foot myself, was happy with the 20 I got though...

Found out later on it was measured in L/100kms.. FML lol

cab83_750 · 12-25-2009, 02:10 PM

I find the computer to be accurate. Very very close to manual computation.

This thread is timely...been thinking about getting the HFC for Xmas.

30+ mpg? Are you driving at 60mph?

Red370 · 12-25-2009, 05:30 PM

Quote:

Originally Posted by cab83_750

I find the computer to be accurate. Very very close to manual computation.

This thread is timely...been thinking about getting the HFC for Xmas.

30+ mpg? Are you driving at 60mph?

On the highway between El Paso and Las Cruces, the speed limit is 75, after a recent ticket scare, I stayed at 75 the whole way, I didnt take the picture until after I was parked at my apartment. The MPG stayed pinned at 31.8 the whole way, I was amazed. Get the HFC's, you wont regret it.

frost · 12-25-2009, 05:42 PM

i normally get over 25 in heavy traffic. Not sure how some of you guys are getting numbers in the teens

Red370 · 12-25-2009, 08:31 PM

Quote:

Originally Posted by frost

i normally get over 25 in heavy traffic. Not sure how some of you guys are getting numbers in the teens

The ones shifting at 4.5k

roplusbee · 12-25-2009, 08:55 PM

Quote:

Originally Posted by Red370

The ones shifting at 4.5k

If you are doing that quite often, then I can see your fuel economy suffering. If you are on the high way for a good time without having to slow down and accelerate alot, then you should be ok with some occasional "spirited" RPM shifting

spearfish25 · 12-25-2009, 09:25 PM

I get 14mpg to and from work these days because it's 25F outside and my engine never fully warms up.

mspeasl · 12-26-2009, 02:07 PM

BTW, what is HFC's...? Sorry I don't have a clue. I tried a search without any luck.

Thanks

Dreadnaught · 12-26-2009, 02:11 PM

Quote:

Originally Posted by mspeasl

BTW, what is HFC's...? Sorry I don't have a clue. I tried a search without any luck.

Thanks

High Flow Catalytic Converters.

DooDooBrown · 12-26-2009, 08:06 PM

22

12-24-2009, 11:00 PM	#1 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 296	Added benefit from HFC's... 3 MPG more than what I had prior to installation, first time I actually took the time to test it, Temp was 39, cruising from Las Cruces, NM to El Paso, TX. And with an SES light to boot! 32mpg... 370Z: EconoSport. __________________ 2011 Mustang 5.0 \| 3.55's \| Lethal Performance off road H-Pipe \| Magnaflow Muffler Delete \| JLT CAI/Bama tuned 417whp/ 404 ft/lbs

12-24-2009, 11:26 PM	#3 (permalink)
370zdub Track Member Join Date: Jun 2009 Location: UT Posts: 628 Drives: 09 370z 6mt,10 Ford Rep Power: 17	My on board computer reads 19.9 at best! My best hand calculation was 20.3 also, how are you guys getting that kind of mileage? __________________ 2010 Ford 6.4L Power Stroke Diesel: 588whp/1082wtrq 2007 Dodge 6.7L Cummins Diesel: 788whp/1405wtrq, runs 12's @ 7400lbs, Still miss my 370z!

12-24-2009, 11:30 PM	#4 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	21.4 overall with the 7AT and Im kinda of a heavy foot driver but when not trying to beat everyone the AT keeps rpms down and gets good MPG. __________________ 2010 LS3 C6 Silver coupe corvette

12-25-2009, 03:22 AM	#6 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 21	Yeah I do have a lead foot myself, was happy with the 20 I got though... Found out later on it was measured in L/100kms.. FML lol __________________ '14 Viper GTS '08 RB'd G37S - Sold

12-25-2009, 09:25 PM	#12 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1857	I get 14mpg to and from work these days because it's 25F outside and my engine never fully warms up. __________________ 2013 Cadillac V-Wagon, RIP Z

12-25-2009, 02:10 PM	#7 (permalink)
cab83_750 Track Member Join Date: Apr 2009 Location: CA Posts: 887 Drives: 09 NISSAN 370Z Rep Power: 418	I find the computer to be accurate. Very very close to manual computation. This thread is timely...been thinking about getting the HFC for Xmas. 30+ mpg? Are you driving at 60mph?

12-25-2009, 05:42 PM	#9 (permalink)
frost Retired admin Join Date: Dec 2008 Location: Winterfell Posts: 106,613 Drives: Your Wife Crazy Rep Power: 0	i normally get over 25 in heavy traffic. Not sure how some of you guys are getting numbers in the teens

12-26-2009, 02:07 PM	#13 (permalink)
mspeasl Enthusiast Member Join Date: Jan 2009 Location: Decatur, IL Posts: 367 Drives: Red M6 Sport/Touring Rep Power: 269	HFC's... BTW, what is HFC's...? Sorry I don't have a clue. I tried a search without any luck. Thanks __________________ Mspeasl - Central Illinois 2009 - Solid Red, M6 '370' Sport/Touring (Delivered 7 April 09)

12-26-2009, 08:06 PM	#15 (permalink)
DooDooBrown Base Member Join Date: Jun 2009 Location: Ranson, WV Posts: 178 Drives: 09 370 Touring w/spt Rep Power: 17	22

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