Proper fuel support for 60 trim

[alkadaypx182]

Hello all, I have a T04E 60-Trim installed in my car with a re-wired walbro 190 and 680 injectors tuned off of an s-afc. The car is currently set at 15 pounds of boost and no higher.

Since I finally got enough money to buy dsmlink I want to finally get the proper fuel needs for my turbo. What fuel upgrades do you guys recommend so my turbo can really put out its potential? Any advice is greatly appreciated thanks.

 

[sheldon]

how much boost do you want to run with the 60 trim?

 

[Phalanx99]

Ethanol 85 will be the best for 60trim. But to run with E85 you need to upgrade the whole fuel system to stainless lines. And you need very big injectors like 1100cc or so. It will make your 60 trim spool faster and quicker. One more advantage is that E85 is cheaper than 91 or 92 octane.

 

[95blackGsTurbo]

Ethanol 85 will be the best for 60trim. But to run with E85 you need to upgrade the whole fuel system to stainless lines. And you need very big injectors like 1100cc or so. It will make your 60 trim spool faster and quicker. One more advantage is that E85 is cheaper than 91 or 92 octane.

But you burn it almost twice as fast. With DSMLink, 680cc injectors and upgrade to a 255lph fuel pump with an AFPR you should be able to get all you can get out of it on pump gas. I don't recommend using E85 because you have to tune for it and if you ever go out of town and get regular premium your car will run like complete crap. Basically you just need to upgrade fuel pump and get an AFPR. To be safe you could upgrade to some larger injectors. 850cc at most but like I said for pump 680cc will be good for 23lbs.

 

[GVR4592]

I'm currently running a PTE TO4E 60 trim. My profile probably says 750's, but I currently have 650's in the car because I loaned out the 750's. With a rewired 255 and 12:1 A/F, I max out the injectors at 22 psi. So on pump gas, with richer mixtures you would need something a little bigger at higher boost levels.

The 680's will be fine for 15-20 psi, but since you're upgrading to Dsmlink, go big. I would get something in the 1000cc area. I would also get a 255HP or a Supra pump. It's always a good idea to make the fuel system overkill, you don't ever want to run out of fuel in the middle of a run.

 

[GVR4592]

Ethanol 85 will be the best for 60trim. But to run with E85 you need to upgrade the whole fuel system to stainless lines. And you need very big injectors like 1100cc or so. It will make your 60 trim spool faster and quicker. One more advantage is that E85 is cheaper than 91 or 92 octane.

E85 is great, but it's not the best. You dont need stainless lines, it's not as corrosive as most people will lead you to believe. It will NOT make the turbo spool quicker, and it is not cheaper than 91 or 92 octane.

 

[spyderturbo007]

It's always a good idea to make the fuel system overkill, you don't ever want to run out of fuel in the middle of a run.

Excellent advice!!!! Too many people want to skimp on the fuel system and then cry when they melt something.

 

[95blackGsTurbo]

E85 is great, but it's not the best. You dont need stainless lines, it's not as corrosive as most people will lead you to believe. It will NOT make the turbo spool quicker, and it is not cheaper than 91 or 92 octane.

Actually that's not entirely true. Since ethanol is mainly produced in the midwest we get it for cheaper. When I was living in Iowa a little over a year ago E85 was generally 45-50 cents cheaper than unleaded gasoline. May just be true for our part of the country since we are the main producers though.

 

[fwdeclipse]

I'm currently running a PTE TO4E 60 trim. My profile probably says 750's, but I currently have 650's in the car because I loaned out the 750's. With a rewired 255 and 12:1 A/F, I max out the injectors at 22 psi. So on pump gas, with richer mixtures you would need something a little bigger at higher boost levels.

The 680's will be fine for 15-20 psi, but since you're upgrading to Dsmlink, go big. I would get something in the 1000cc area. I would also get a 255HP or a Supra pump. It's always a good idea to make the fuel system overkill, you don't ever want to run out of fuel in the middle of a run.

I just installed a t4 to4e 60trim and right now im running with 650s at 24psi on 91.I also am running water/meth injection which I think helps.I will be buying some 950s soon but for now the 650s are working.No knock.

 

[nightspeed87]

How I see it is if you have link/ or a keydiver chipped Eprom then go shoot for the sky when it comes to injectors. If you can control them then there isnt a such thing as too big and you wont never have to worry about not having enough fuel. Id say ( if you can control it ) get some 1000cc injectors, a supra 260lph fuel pump , and most def a afpr, and make sure your fuel filter is new and then you should be good to handle whatever turbo you can get your hands on!

( That exact set up was what I had in mind for the future of my car actually. But I may only get 850s because I dont plan on ever breaking over 500whp as in because this is a fwd and its my dd.)

Im not completely injector literate, but I bet you could probably reach the 500whp mark with only 720s ? ( of course saying you had at least a 255lph and afpr .)

 

[GVR4592]

Actually that's not entirely true. Since ethanol is mainly produced in the midwest we get it for cheaper. When I was living in Iowa a little over a year ago E85 was generally 45-50 cents cheaper than unleaded gasoline. May just be true for our part of the country since we are the main producers though.

Factor in the 30% worse gas mileage, and current prices, and you are paying more.

 

[95blackGsTurbo]

Good point.

 

[brute]

a supra 260lph fuel pump

Actually, the Mk IV Supra TT pump flows about 290lph. It's what I have, and it seems to be working great so far.

If you have DSM Link and, say, 1000cc injectors, would you get the same gas mileage as if you had 550cc's? I've always had this question and have never gotten a straight answer.

 

[alkadaypx182]

Alright, Thanks everyone I have decided on what to do with my setup.

I'm going to run a walbro 255, an afpr, and while i'm working on fuel.....i might as well get a fuel rail. I also plan on getting the pte 880's.

I want to push this car as much as much as it can handle, but on my setup I think I'm searching for right about 20-22 lbs of boost. I've still never raised it passed 15 so I'm pretty stoked for the 20 lb line for now.

Do my fuel upgrades sound alright? Thanks everyone again.

 

[GVR4592]

I would skip upgrading the fuel rail, it's not a restriction until you're making crazy amounts of power.

 

[spyderturbo007]

Actually, the Mk IV Supra TT pump flows about 290lph. It's what I have, and it seems to be working great so far.

If you have DSM Link and, say, 1000cc injectors, would you get the same gas mileage as if you had 550cc's? I've always had this question and have never gotten a straight answer.

Under normal driving conditions, yes you would get the same gas mileage. But you have to remember, if you are running 1000cc injectors, you probably have a huge turbo. This is going to cause you to flow more air and use more gas at higher TPS values.

So it really depends, which I'm sure is the answer you wanted to hear.

 

[nightspeed87]

I'm going to run a walbro 255, an afpr, and while i'm working on fuel.....i might as well get a fuel rail.

the stock fuel rail has gone into the 9s, but if you like the fancy look of a aftermarket fuel rail, and want one just to say you have it then be my guest.

 

[Phalanx99]

I just installed a t4 to4e 60trim and right now im running with 650s at 24psi on 91.I also am running water/meth injection which I think helps.I will be buying some 950s soon but for now the 650s are working.No knock.

When you want to get rid of those 650cc, I would like to buy them

Anybody know what is the mpg for E85 ? Of course for daily driver not going over 12psi of boost.

 

[alkadaypx182]

Alright, looks like I'm scrapping the fuel rail idea. Thanks again.

 

[Dark_Horse]

To clear up some misconceptions on running E85.

Factor in the 30% worse gas mileage, and current prices, and you are paying more.

Not entirely true. While E85 at WOT does burn about 30% more fuel, at part throttle the increased fuel consumption is much, much less. Most people that run E85 on a daily basis reported anywhere from 10% to 20% decrease in fuel economy depending on how much lead you have in your right foot.

I don't recommend using E85 because you have to tune for it and if you ever go out of town and get regular premium your car will run like complete crap.

With DSMlink, you can save more than 1 fuel map, so it's entirely possible to switch between an E85 map and a Premium map with no trouble at all.

It will NOT make the turbo spool quicker

This may or may not be entirely true. IMO since E85 runs at a much richer AFR than gasoline, the resulting exhaust gas volume from E85 combustion is greater than that of a gasoline combustion process. When the volume of exhaust gas is greater, the turbo "should" spool quicker.

When you want to get rid of those 650cc, I would like to buy them

Anybody know what is the mpg for E85 ? Of course for daily driver not going over 12psi of boost.

Just wondering why you want 650cc injectors when you are thinking of running E85?

 

[GVR4592]

Not entirely true. While E85 at WOT does burn about 30% more fuel, at part throttle the increased fuel consumption is much, much less. Most people that run E85 on a daily basis reported anywhere from 10% to 20% decrease in fuel economy depending on how much lead you have in your right foot.

I looked into this more and you're right, most 2006 flex-fuel vehicles are consuming about 15-18% more fuel when they fill up with E85. Older models got significantly worse mileage. I bet the newer cars are using some type of lean burn mode at cruising speeds.

 

[Phalanx99]

I will not upgrade fuel system to run with E85 in couple years. So I want 650cc and will stick with it until I have enough money to rebuild my engine and upgrade fuel system.