Need help figuring what parts to purchase

[sheshanthv]

Originally Posted by Spuds

Detuning the maximum output of the engine doesn't change the fuel consumption when you aren't WOT. You can optimize the tune to be more efficient at lower throttle but it's going to suck to drive.

The problem here is the engine itself and the turbo parts have been built in a way that is specifically not efficient when off boost. Pressure at TDC = combustion efficiency. The problem with the turbo is it makes pressure by cramming more air in, which means you need more fuel or you will get crazy early detonation which would destroy your internals. NA engines make pressure with higher compression ratios so you don't need to cram as much air in.

I have read that turbos dont mess up fuel economy too bad on light throttle. Do you happen to know what part is making it like that? Also wouldnt tuning and changing compression ratios change how much air the turbo crams in? Im just trying to see if theres anything I can do here lol.

[Spuds]

Originally Posted by sheshanthv

I have read that turbos dont mess up fuel economy too bad on light throttle. Do you happen to know what part is making it like that? Also wouldnt tuning and changing compression ratios change how much air the turbo crams in? Im just trying to see if theres anything I can do here lol.

Let's start with where you read that for context. Was it something about cars that originally came with a turbo or aftermarket turbos?

[sheshanthv]

Originally Posted by Spuds

Let's start with where you read that for context. Was it something about cars that originally came with a turbo or aftermarket turbos?

Well I have seen posts on this forum discussing mpg on a turbo frs or brz. And the guy was on 9lb of boost getting around 26 or 25 mpg.
Look man the car gets 18 mpg rn combined and all I wanted to know was if a tune to lower fuel injection on normal driving or anything of that sort would net me more mpg. That is all.

[Spuds]

Originally Posted by sheshanthv

Well I have seen posts on this forum discussing mpg on a turbo frs or brz. And the guy was on 9lb of boost getting around 26 or 25 mpg.
Look man the car gets 18 mpg rn combined and all I wanted to know was if a tune to lower fuel injection on normal driving or anything of that sort would net me more mpg. That is all.

Short answer, no.

Long answer noooooooooooo.

If you can give a link to the post, maybe someone can help.

Edit: Ok, I can probably tell you what's wrong. Compression is too low. Valve springs too stiff. Probably more engine internals set for power and not efficiency. Wheels too wide, and you could probably put on touring tires rather than performance tires which I assume it has. Don't know about turbo sizing but smaller is usually more efficient.

[pope]

Originally Posted by sheshanthv

hah yeah well im really pushing to make it work, cuz this specific car has been like my intro into the car scene, and I wont lie i have been so jealous of my friend for getting it, so im gonna try my best and make it work.

Originally Posted by sheshanthv

I have read that turbos dont mess up fuel economy too bad on light throttle. Do you happen to know what part is making it like that? Also wouldnt tuning and changing compression ratios change how much air the turbo crams in? Im just trying to see if theres anything I can do here lol.

Originally Posted by sheshanthv

Well I have seen posts on this forum discussing mpg on a turbo frs or brz. And the guy was on 9lb of boost getting around 26 or 25 mpg.
Look man the car gets 18 mpg rn combined and all I wanted to know was if a tune to lower fuel injection on normal driving or anything of that sort would net me more mpg. That is all.

You can keep ignoring all of us that have given you the facts about these cars or you can take the recommendations and move beyond the childish “scene” culture and become a true car person.

Here is the hard truth, if gas prices and fuel economy concern you, it’s out of your budget. Unless you have real money in college, you shouldn’t have a modified car.

But, if you absolutely have to own this BRZ, your solution is to sell the built engine and turbo kit and replace it with a stock engine. Then, if it has any other aftermarket parts on it that’ll kill fuel efficiency (e.g. park bench wing, heavy wheels, wide tires, body kits, etc.) you need to remove them.

No amount of tuning is going to fix the fuel economy without blowing the engine the first time you step on the gas.

[Tcoat]

Originally Posted by pope

You can keep ignoring all of us that have given you the facts about these cars or you can take the recommendations and move beyond the childish “scene” culture and become a true car person.

Here is the hard truth, if gas prices and fuel economy concern you, it’s out of your budget. Unless you have real money in college, you shouldn’t have a modified car.

But, if you absolutely have to own this BRZ, your solution is to sell the built engine and turbo kit and replace it with a stock engine. Then, if it has any other aftermarket parts on it that’ll kill fuel efficiency (e.g. park bench wing, heavy wheels, wide tires, body kits, etc.) you need to remove them.

No amount of tuning is going to fix the fuel economy without blowing the engine the first time you step on the gas.

Looking at the parts list in that car it has been built to use ever single aftermarket "upgrade" in the catalogue. It is going to be a gas hog no matter what is done to it. END OF STORY. You could not pay me to drive that thing as a DD.

Of course putting a stock engine in it will lose "car scene" street cred and Instagram likes so the car is useless if that is done.

Of course it is also hard to be part of the crowd when your Super Car is sitting behind the garage with a tarp over it because you tried to down tune it and blew the engine up but can't afford repairs.

But it appears we are all just...

[pope]

Originally Posted by Tcoat

Looking at the parts list in that car it has been built to use ever single aftermarket "upgrade" in the catalogue. It is going to be a gas hog no matter what is done to it. END OF STORY. You could not pay me to drive that thing as a DD.

Of course putting a stock engine in it will lose "car scene" street cred and Instagram likes so the car is useless if that is done.

Of course it is also hard to be part of the crowd when your Super Car is sitting behind the garage with a tarp over it because you tried to down tune it and blew the engine up but can't afford repairs.

But it appears we are all just...

He couldn’t get the answer he wanted here, so he went to the middle-school brain trust on Reddit.

https://www.reddit.com/r/ft86/commen...turbo_brz_mpg/

[Tcoat]

Originally Posted by pope

He couldn’t get the answer he wanted here, so he went to the middle-school brain trust on Reddit.

https://www.reddit.com/r/ft86/commen...turbo_brz_mpg/

Per usual
I have never been there and don't plan to now.

[x808drifter]

Originally Posted by Tcoat

Per usual
I have never been there and don't plan to now.

I have but only really go to
r/iiiiiiitttttttttttt (it is spelt like that for a reason)
r/airsoftcirclejerk (110% troll thread)
r/systemadmins
r/WinStupidPrizes

[Lantanafrs2]

If you're concerned with fuel economy, you probably won't be able to afford another motor, which will be needed at some point.

[NoHaveMSG]

Originally Posted by sheshanthv

I have read that turbos dont mess up fuel economy too bad on light throttle. Do you happen to know what part is making it like that? Also wouldnt tuning and changing compression ratios change how much air the turbo crams in? Im just trying to see if theres anything I can do here lol.

BECAUSE IT'S NOT IN BOOST.

[soundman98]

Originally Posted by pope

He couldn’t get the answer he wanted here, so he went to the middle-school brain trust on Reddit.

https://www.reddit.com/r/ft86/commen...turbo_brz_mpg/

funny how that is starting to spiral the same way this did...

almost like he's trying to find the answers he wants instead the answer he needs...

[Apolllo]

Whats the point of having a turbocharged car if you never drive it in boost?

[soundman98]

Originally Posted by Apolllo

Whats the point of having a turbocharged car if you never drive it in boost?

Be SuRe To LiKe AnD sUbCrIbe!!!!!!!!!!!!!!!!