Does Turbo effect gas milage??

[Xdragonxb0i]

I drive like a granny right now on a stock FRS i get 29MPG in the city. I think i will get 1-2+ mpg when i do add a little power and still drive like a granny. Shifting @2000-2500 RPM

You will get the same effect with a turbo. But you will be more tempted to step on the throttle. So when you drive agressively you will lose MPG

[industrial]

Consider this... One of the biggest hits you'll take on MPG on this car is when you upgrade the wheels and tires. A wider stance is far less aerodynamic and they chose these crappy stock tires for a reason you know. It was a compromise between MPG and performance. Bolting on 50% more HP you will NEED better tires.

Just something else to consider.

[usptwins]

If you don't wana lose your MPG, then don't get the kit... Just do full bolt-on's...

[beesmiff07]

Originally Posted by usptwins

If you don't wana lose your MPG, then don't get the kit... Just do full bolt-on's...

You got too explain...I dont know shit bout engines and im using this to really get hands on

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[ziggz501]

Originally Posted by beesmiff07

You got too explain...I dont know shit bout engines and im using this to really get hands on

He's saying, to avoid any worries about gas mileage, just avoid a turbo and do bolt on modifications. Bolt ons are just simple mods like changing your exhaust and air intake. They generally just allow you to unbolt the old part from the engine and put your newer mod on, so thats why they are called 'bolt-ons'. You won't get a massive power increase from these types of mods like you will a turbo, but there are no worries about effecting the car's mpgs.

[usptwins]

Also, a great thing you can do is get a tune. A tune will increase power and performance and give you better MPG. Full bolt-on's consist of: header, overpipe, midpipe, cat-back exhaust, aftermarket intake, clutch, flywheel, and better tires for traction. There are plenty of parts to simply replace the stock restrictive OEM parts.

[Supermassive]

Originally Posted by Bristecom

Depends on how you tune it. At partial throttle you may even get better fuel economy but at full throttle, you will always get less fuel economy because you are using more fuel to compensate for the extra air. But keep in mind a turbo kit will be expensive, lower reliability, void the warranty, add weight, make the throttle less responsive, etc. It's not worth it IMO.

I've been running my turbo on my car for a few days now and i can say without a doubt that with my limited time driving it my average MPG has dropped quite a bit. With all my mods before turbo I averaged 24-25MPG, now I'm averaging 20-21MPG. When I am burying my foot in the throttle and playing the car is even worse. I will be taking a trip from Phoenix to San Diego soon which is all open highway to get a good estimate of highway MPG, I'm expecting relatively similar numbers to what I was getting before at about 28-30MPG, but we'll see.

I can attest to the expense of a turbo setup, a turbo kit might cost $4-5k but that doesn't include all the other things you should upgrade with a turbo, like wheels, tires, clutch, exhaust, tune, gauges, etc. I have about $20k invested in parts in my car and most of it is performance oriented.

You also do add weight...in my case about 50lbs was added to the front end, but with 7PSI boost I'm making 255WHP, almost 100HP over stock, so the weight gain is hardly an issue. You can get rid of that added weight by changing out your stock flywheel, taking out your spare tire and all the res of the stuff in the trunk, and a few other minor weight reducing options if it's that important to you.

Last but not least, these turbo kit's do not lose responsiveness of the throttle, in fact with a lightweight pulley and clutch/flywheel installed my car revs like a sportbike...if you don't believe me:

These little FA20 engines are built for boost it seems, hell they even include bungs on the engine case for oil supply lines. It's been a long expensive journey, but if you are considering a turbo, you have to weigh all the good with all the bad. If MPG is a big factor FI might not be for you, hell any engine modification beyond a tune would probably be a bad idea if MPG is the net goal. If you are looking for more performance and can live with slightly worse MPG then FI is a viable route.

[nonicname]

Originally Posted by beesmiff07

You got too explain...I dont know shit bout engines and im using this to really get hands on

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oh boy. let me guess you are buying auto tranny?

[Hardrock4445]

Depends on your foot.....

[beesmiff07]

Originally Posted by nonicname

oh boy. let me guess you are buying auto tranny?

Id look like a bitch if I did so no!!!!!...

Thats why I was worried bout gas since it already gets 22mpg...I would love to finally have a ride that gets over 20

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[McDeLtA_T]

Turbos increase your fuel economy drastically. I am an engineer with years of experience designing propulsion systems for ships. Every engine is fitted with a turbo to recovrr the waste heat from the exhaust and basically transfer the wasted energy back into your engine by increasing your cylinder air density by bumping the pressure up. You can tune it for efficiency and add an intercooler to further increase your air density for better combustion. Inter coolers are used to cool the air to again to increase air density so your combustion is improved. It all about density , pressure and temperature. Also, the more your engine is loaded the more efficient it runs.

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[Supermassive]

Originally Posted by McDeLtA_T

Turbos increase your fuel economy drastically. I am an engineer with years of experience designing propulsion systems for ships. Every engine is fitted with a turbo to recovrr the waste heat from the exhaust and basically transfer the wasted energy back into your engine by increasing your cylinder air density by bumping the pressure up. You can tune it for efficiency and add an intercooler to further increase your air density for better combustion. Inter coolers are used to cool the air to again to increase air density so your combustion is improved. It all about density , pressure and temperature. Also, the more your engine is loaded the more efficient it runs.

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Not to question you're experience but performance oriented turbos and tunes will decrease fuel economy due to more fuel being added to the combustion chamber to take advantage of the increased air charge. I have actual real world experience with a turbo on this car and I have lost about 4mpg since I installed my turbo kit and got it tuned. I am sure there are turbo options that could improve mpg but they would be small and provide little performance increase for the cost. Turbos are however more fuel efficient than supercharger but that's a whole nother bag of worms.

[ziggz501]

yeah... fuel has to be added to that air, otherwise you will superheat the engine and melt the cylinders... you can't just add air and pump the same amount of fuel that it was using while it was stock.

[usptwins]

KABLOOOOOOIE!!!!!!!!!!!!!!! Hyperdrive activated!!!!!!!!!!!! Turbo boosters activated!!!!!!!!!!! Flux capacitor!!!!!!!!!!!!!!!!! YAhhhhhhhhhhhoooooooooooooooooooooooooooo!!!






































Listen, just get what you want from your car. Like all people with 1st world problems, you can only have 2 of 3 things.... Performance, Reliability, Quality... Or something of that sort. lol