Boosted? Whats your MPG!
07-31-2008, 09:22 AM
#1
Boosted? Whats your MPG!
Greetings members,
I wanted to compare the difference, between Turbo and S/C. My interest is only highway MPG. on the stock Z the MPG is around 23 or so. I know with Turbos under vacuum, we are actually itemizing the air which makes it burn better.
I got 33MPG going 65MPH, and 28.8MPG going 73MPH
I wanted to compare the difference, between Turbo and S/C. My interest is only highway MPG. on the stock Z the MPG is around 23 or so. I know with Turbos under vacuum, we are actually itemizing the air which makes it burn better.
I got 33MPG going 65MPH, and 28.8MPG going 73MPH
07-31-2008, 09:55 AM
#2
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Once you put test pipes in and especially when you have a longer O2 bung to fool your computer, your dash MPG meter is no longer accurate. The only true way is to divide your mileage by gallons used. I get 28 highway and 16 driving it around and boosting. Oh and a stock Z gets better then 23 mpg on the highway.
07-31-2008, 10:15 AM
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Originally Posted by westpak
as soon as you change injctors and play with fuel pressure that computer is useless
I know my MPg went up now that I have a turbo ... before it was like 19 and now is 24MPG
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07-31-2008, 10:20 AM
#8
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Approx. 19 in city traffic; 27 at the freeway.
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'O4 Touring Coupe: FLAWLESS AT!!!, 13k!!!, $2O,5OO!!! NO feathering!!!!!!!!!!!
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'O4 Touring Coupe: FLAWLESS AT!!!, 13k!!!, $2O,5OO!!! NO feathering!!!!!!!!!!!
07-31-2008, 10:37 AM
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Damn, so does mpg actually increase with F/I? I always figured the opposite.
I'm around 20-21 mpg stock with avg around 35mph... but I only drive a couple miles to and from work, no highway. So crappy mileage + little driving = rare pump stops.
Sorry, back on topic.
I'm around 20-21 mpg stock with avg around 35mph... but I only drive a couple miles to and from work, no highway. So crappy mileage + little driving = rare pump stops.
Sorry, back on topic.
07-31-2008, 12:04 PM
#14
for sc mpg will be less than stock due to constant parasitic losses.
for turbo in boost, mpg will drop based on the amount of time spent in boost and the boost level. With a turbo, you can stay in vacuum and not utilize any more fuel than stock. If your tuner spends enough time, they can lean out AFRs under vacuum to provide significant economy at the expense of a slightly rougher driving experience.
for turbo in boost, mpg will drop based on the amount of time spent in boost and the boost level. With a turbo, you can stay in vacuum and not utilize any more fuel than stock. If your tuner spends enough time, they can lean out AFRs under vacuum to provide significant economy at the expense of a slightly rougher driving experience.
Last edited by rcdash; 07-31-2008 at 12:06 PM.
07-31-2008, 06:01 PM
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is it unsafe to run lean in those applications?
My best was 54 mpg on my computer....no where close of course...but i saw it! As i drove home I thought...this sucker is going to pay for itself!
....nope.
Last fill i was around 18 mpg total...need to do a highway test
My best was 54 mpg on my computer....no where close of course...but i saw it! As i drove home I thought...this sucker is going to pay for itself!
....nope.
Last fill i was around 18 mpg total...need to do a highway test
07-31-2008, 07:34 PM
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Originally Posted by Blackbird CPV35
~ 20 mpg highway cruising with HKS 1000cc
Haltech is reading about 14.2-14.5 at cruising speeds so where the hell is all my gas going?
Haltech is reading about 14.2-14.5 at cruising speeds so where the hell is all my gas going?
