What MPG are you getting after going F.I.

modme

The only way that turbos increase MPG is by decreasing the engine size. Car manufactures use turbos in the cars to create the same amount of horsepower with a smaller displacement engine.

For example, BMW 335 uses twin turbos to enable a 3.0 liter engine to output around 300bhp. Without turbos, the same engine would probably require a 3.5 liter to make the same power. At idle and cruising, a 3.0 liter engine will use less gas compared to the 3.5, therefore you "increase MPG by turbos".

However, slapping on turbos on the same engine with same displacement will NOT increase MPG.

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elperuano

Well said sir.

This is why I hope it doesn't go in that direction. Everything said has been said in past threads also.
Lets just stick to stating MPG... If anyone throws in a high number we can all have a nice laugh.

Chuck33079

I see about 18-18.5 mpg in normal driving. As far as turbos increasing mpg, you may see a little increase in fuel economy driving around in vacuum if the tune is leaner than a stock Z. Once you put your foot into it, all mpg gains go right out the window.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

Sh0velMan

Pumping losses.

Out of boost, the engine runs at lower efficiency. Unless the engine in question has absolutely horrible scavenging at small throttle openings/low RPM (hint: ours doesn't have poor scavenging) you will pretty much never see an uptick in fuel efficiency.

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Z370Z011

lol no fighting you guys!.. hopefully everyone can post some sincere MPG numbers
of course MPG doesnt matter much when boosting a car, but its interesting to see what MPG numbers everyone is hitting

modme

I've done 3 cross country trips with my GTM twin turbo G37. Averaging 70-75 miles per hour with very little boost, I get about 24 MPG.

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GTM Twin Turbo Stage 2|GTR Turbo/Engine Gauges|KW V3 Coilovers|HKS Exhaust|Oil Cooler| Vossen CV1

modme

I hope you see a pattern of what actual turbo owners are telling you versus those that are trying to sell you a turbo.

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roplusbee

In stop and go traffic, I get 12-13.5 MPG driving around Killeen/Fort Hood. It is a more or less slinky effect.

On the highway, that is a whole different situation. I have never filled more than 18.1 gallons and I have driven about 500 miles each time I take it down to 1 dot or less. If I use the fuel that you get on base, forget about it. The car might not even start, lol.

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2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL

Z370Z011

dam!!!!! lol

dP3NGU1N

I sense a regret going FI thread brewing

Z370Z011

elperuano

Never that! Unless you've experienced the rush you wouldn't understand!

Z370Z011

my friend had a 600hp evo that he let me drive once... ive been wanting to go FI ever since lol

modme

Absolutely no regrets. The OP asked for MPG feedback and the fact is it will go down. If you want to know if i regret FI? nahhhhhhhhhhhhhh no way.

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GTM Twin Turbo Stage 2|GTR Turbo/Engine Gauges|KW V3 Coilovers|HKS Exhaust|Oil Cooler| Vossen CV1

SharpByCoop

I don't measure my Miles Per Gallon...

That's because I'm too absorbed with my Smiles Per Gallon.

Priceless.

Coop

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Jim Cooper - (Retired: '08 Infiniti G37 Sport • TheShopCT built • 11.13 @ 123 mph (click for vid) • GTM Stage II Twin Turbo • 5-speed A/T Level Ten built • 591whp @17 lbs boost)