E85 Fuel?

[NESW20]

Originally Posted by Lexicon101

11+% boost, but the graph shows right there in the legend that the setups on the car are different.
I want to see the same setup produce those numbers. Then I'll take your claims of HP boosts srsly.

*sigh*

-Mike

[Biggie™]

Originally Posted by Lexicon101

I want to see the same setup produce those numbers.

In the blog, it explained that the performance modifications were the same.

[Midship Runabout]

Originally Posted by Lexicon101

11+% boost, but the graph shows right there in the legend that the setups on the car are different.
I want to see the same setup produce those numbers. Then I'll take your claims of HP boosts srsly.

this

Originally Posted by Biggie™

The GT-R wasn't designed to run E85, so they had to upgrade injectors and fuel pumps. But other than that, both setups were identical.

and if your talking about the extra 1.5psi that was because it is safer to run more boost with e85 or race gas because of its resistance to detonation.... the real reason we want e85 in the first place...

[Biggie™]

Originally Posted by Dixie Normous

and if your talking about the extra 1.5psi that was because it is safer to run more boost with e85 or race gas because of its resistance to detonation.... the real reason we want e85 in the first place...

The nice thing is you don't have to run it if you don't see a benefit. But having the option does bring bigger injectors and higher capacity fuel pumps that will benefit anyone upgrading the performance. I believe that fact is getting lost on some.

[Matador]

Originally Posted by Biggie™

The nice thing is you don't have to run it if you don't see a benefit. But having the option does bring bigger injectors and higher capacity fuel pumps that will benefit anyone upgrading the performance. I believe that fact is getting lost on some.

That is true, but regardless the factory ecu is not able to take advantage of the bigger fuel system while running regular gas.

If that is the sole reasoning behind wanting an E85 capable car, I could think of many better things that could be added to the car which would result in the same price increase.

[Biggie™]

Originally Posted by MatadorRacing_F1

That is true, but regardless the factory ecu is not able to take advantage of the bigger fuel system while running regular gas.

Hum... What about the MKIV Supra Twin Turbo, with basic bolt ons and no tuning it made an extra 150 whp or more?


Anyway... I've already posted tuning options for factory ECUs, I'm sure with enough demand the FT86 would soon have something of its own.

[NESW20]

using another example: my MR2. from the factory, they come with 440cc injectors, and 160whp. my car is using all the factory fuel system components (with a walbro pump) and making 240whp. and i'm not running out of injector yet.

-Mike

[Biggie™]

Originally Posted by NESW20

using another example: my MR2. from the factory, they come with 440cc injectors, and 160whp. my car is using all the factory fuel system components (with a walbro pump) and making 240whp. and i'm not running out of injector yet.

-Mike

What is your duty cycle at 240whp?

My EVO needed 1000cc injectors to break 600whp on race gas. When I upgraded to run E85 I went to 1600cc injectors and now put down 648whp.

The thing some might be forgetting is the fact the FT86 will be direct injected. Without larger injectors from the factory, you will be stuck with whatever comes in the car, limiting potential power. The poor MAZDASPEED3 guys have learned this the hard way as they are limited to 400whp.

[NESW20]

when tuning my AEM, i think i'm using "raw" figures, so i couldn't tell you with much precision what DC i'm running. i would imagine in the 70% range, so there's still a little room there, but not a whole lot. to get my MR2 where i want it, my fuel system and turbo need to be upgraded, but that will wait until after i finish school this year. and i might change some parts inside the engine, but we'll see...

one thing i was wondering, since i haven't really done much research (never really had any reason to look): no one makes larger capacity direct-injection injectors?

-Mike

[Biggie™]

Originally Posted by NESW20

when tuning my AEM, i think i'm using "raw" figures, so i couldn't tell you with much precision what DC i'm running. i would imagine in the 70% range, so there's still a little room there, but not a whole lot. to get my MR2 where i want it, my fuel system and turbo need to be upgraded, but that will wait until after i finish school this year. and i might change some parts inside the engine, but we'll see...

Assuming you are getting 10% or more drive train loss, your injectors should be close to being maxed out at over 264 hp.

Since we are in theory dealing with a 2.0 liter Subie flat 4. Let's look at the last 2.0 liter Subie flat 4 that made it to the USofA, the 2002 WRX. It came with 420cc injectors, ones similar in size to yours. Stock power on 93 octane was 169whp and 174 lb/ft. Well those injectors got maxed out at Stage 2(tune and down pipe), about 225 whp and 223 lb/ft.

So without help from a bigger fuel system from the factory me might get stuck with relatively little room to improve engine performance.

Originally Posted by NESW20

one thing i was wondering, since i haven't really done much research (never really had any reason to look): no one makes larger capacity direct-injection injectors?

Direct injectors and their ultra high pressure fuel pumps are very proprietary.

[Midship Runabout]

Originally Posted by NESW20

and i might change some parts inside the engine, but we'll see...
-Mike

ATS 2.3L Stroker!!!!!!!!

ha i almost forgot the ft will have direct injection.

[Siriusly.Andrew]

Weren't the rumours that the FT would have dual injection? Direct + Port ?

[Biggie™]

Originally Posted by Siriusly.Andrew

Weren't the rumours that the FT would have dual injection? Direct + Port ?

Yep and those rumors stated that the car would run totally on the direct injectors at high RPM. But who really knows?

[Matador]

Originally Posted by Biggie™

Hum... What about the MKIV Supra Twin Turbo, with basic bolt ons and no tuning it made an extra 150 whp or more?


Anyway... I've already posted tuning options for factory ECUs, I'm sure with enough demand the FT86 would soon have something of its own.

Do I really have to explain that to you?

Originally Posted by NESW20

using another example: my MR2. from the factory, they come with 440cc injectors, and 160whp. my car is using all the factory fuel system components (with a walbro pump) and making 240whp. and i'm not running out of injector yet.

-Mike

You will soon