[tmick5jr]

hey everyone, looking into the DOC Racing 6266 Precision Single Turbo kit but have a question. How is it possible that our stock injectors are still good at 600+WHP and i would only need a stage 2 LPFP? and lets say i wanted the car to be 800 WHP capable. are the injectors still good and why? it still seems like for 800 WHP you just need a LPFP and port injectoion. does the port injection make up for the stock injectors? just trying to wrap my head around this and figure out what fueling ill need and how these injectors handle so much, thanks!

[Jeff@TopGearSolutions]

Originally Posted by tmick5jr

hey everyone, looking into the DOC Racing 6266 Precision Single Turbo kit but have a question. How is it possible that our stock injectors are still good at 600+WHP and i would only need a stage 2 LPFP? and lets say i wanted the car to be 800 WHP capable. are the injectors still good and why? it still seems like for 800 WHP you just need a LPFP and port injectoion. does the port injection make up for the stock injectors? just trying to wrap my head around this and figure out what fueling ill need and how these injectors handle so much, thanks!

When you reach the fuel limit of stock injectors and available fuel pump upgrades, then you go to port injection fueling to make up the difference needed.

[limitdown]

To put down a solid 600whp on any/every dyno, you'll need to run E50+, dual walbro LPFP's (ie stage 3) and port injection.

[Torgus]

Originally Posted by limitdown

To put down a solid 600whp on any/every dyno, you'll need to run E50+, dual walbro LPFP's (ie stage 3) and port injection.

Or meth and 93.

[fordbaxter]

Originally Posted by limitdown

To put down a solid 600whp on any/every dyno, you'll need to run E50+, dual walbro LPFP's (ie stage 3) and port injection.

What LPFP would you need to run 600WHP with full E85 and port injection?

[Torgus]

Originally Posted by fordbaxter

What LPFP would you need to run 600WHP with full E85 and port injection?

Stage 3 if you want full E85. Stage 2 50% E85 and 93 is like 600-650 iirc.

[Twisted Tuning]

or race fuel C16 or MS109

[tmick5jr]

looking at n54 tech it seems as if you only need a stage 2 lpfp and pump gas to make the 600 whp

[limitdown]

Originally Posted by tmick5jr

looking at n54 tech it seems as if you only need a stage 2 lpfp and pump gas to make the 600 whp

You'll be using lots of meth to provide supplemental fueling.
Read Chris @ Vargas' article on how to get to 600whp. Seach using "chris vargas 600 whp"
Let us know how it goes.

[Wifeys335i]

What's the most, and safest, power a 6266 make with a fuel-it stage 2 pump on strictly 93 octane? 550whp?

[Torgus]

Originally Posted by Wifeys335i

What's the most, and safest, power a 6266 make with a fuel-it stage 2 pump on strictly 93 octane? 550whp?

yeah around 550hp/475tq give or take. a google search for "n54 6266 dyno 93 octane" will get you dynos and logs etc.

add some meth and you will be over 600. I have read the 6466 spins up just as fast basically, I think that is why more people go with the slightly larger turbo.

http://www.e90post.com/forums/showthread.php?t=829687

[badblackcoupe]

Thats 21 psi on 91 oct with an inline stage one, come on man its 2017

[dyezak]

A lot of false information in this thread. Some good info. Vendor's serve themselves and provide suggestions that drive their bottom line. Seems like a lot of false information on this board the more the platform progresses. This isn't 2011 any more.

[langsbr]

Unless their dyno is optimistic, which I don't think is very common on dynojets, EMP Tuning has done quite a few Stage 2 LPFP only setups making right at or over 600 whp.

They're all running something like E40 - 60, but they are solid 600 whp cars, not spikes.

Every car is different and I'd probably say the stage 2 limit is anywhere from 575 - 625 whp. What's 25 hp among friends anyways.

Anything above that, you'll need a stage 3 low pressure pump and port injection.

The injectors are not the limitation on this platform, but rather the high pressure fuel pump. Above 600 whp, the high pressure fuel pump can't keep up. You could run the VTT shotgun that overspins the high pressure pump increasing overall capacity. Most people opt for port injection - 6 additional injectors, like a regular non direct injection engine would use. It sprays the fuel into the intake port, rather than the cylinder. I'm not a fan of it, but it's proven powerful and safe when used correctly.

[Shane303]

Originally Posted by langsbr

Unless their dyno is optimistic, which I don't think is very common on dynojets, EMP Tuning has done quite a few Stage 2 LPFP only setups making right at or over 600 whp.

They're all running something like E40 - 60, but they are solid 600 whp cars, not spikes.

Every car is different and I'd probably say the stage 2 limit is anywhere from 575 - 625 whp. What's 25 hp among friends anyways.

Anything above that, you'll need a stage 3 low pressure pump and port injection.

The injectors are not the limitation on this platform, but rather the high pressure fuel pump. Above 600 whp, the high pressure fuel pump can't keep up. You could run the VTT shotgun that overspins the high pressure pump increasing overall capacity. Most people opt for port injection - 6 additional injectors, like a regular non direct injection engine would use. It sprays the fuel into the intake port, rather than the cylinder. I'm not a fan of it, but it's proven powerful and safe when used correctly.

I would love to see what HPFP pressures are at with only a stage 2 LPFP making 600hp on E40-60.

[dyezak]

Originally Posted by Shane303

I would love to see what HPFP pressures are at with only a stage 2 LPFP making 600hp on E40-60.

If you would love to see it you can search for them....they have been posted more than a few times.

[Antoans4]

I wonder if with fuel it STG2 single intank pump and VTT single shotgun i would be able to run full e85(100%e85) and make low 6's whp?

[YoungBlood]

Here’s another question, does e85 make it harder to hr higher hp number with inadequate fueling than mixes? Since you need more e85 for the proper A/F ratio

[Chris@VargasTurboTech]

To make 600 whp generally speaking you will need some sort of low pressure fuel pump upgrade, and some sort of auxiliary fueling. This could be methanol injection, it could be port injection, or you could stick with Direct Injection but relocate your HPFP and spin it faster so it has more output. Ultimately you could run two HPFP's and have enough DI capability for up to about 800 whp worth of fuel, although I'd caution you that at that level the injectors start to become a limiting factor, at least with current tuning capability.

I am not aware of anyone that has run a legit 600 whp on ethanol with a meaningfully useful tune on the street with only a low pressure fuel pump upgrade. Don't fool yourself into hoping, you'll simply run out of hpfp and this will be evident in your logs.

On race gas with a big single you'll probably get there, I think AD-e had a customer that hit that, but that's all she wrote. On ethanol it's flat out a no-go.

Chris

[Antoans4]

Originally Posted by Chris@VargasTurboTech

To make 600 whp generally speaking you will need some sort of low pressure fuel pump upgrade, and some sort of auxiliary fueling. This could be methanol injection, it could be port injection, or you could stick with Direct Injection but relocate your HPFP and spin it faster so it has more output. Ultimately you could run two HPFP's and have enough DI capability for up to about 800 whp worth of fuel, although I'd caution you that at that level the injectors start to become a limiting factor, at least with current tuning capability.

I am not aware of anyone that has run a legit 600 whp on ethanol with a meaningfully useful tune on the street with only a low pressure fuel pump upgrade. Don't fool yourself into hoping, you'll simply run out of hpfp and this will be evident in your logs.

On race gas with a big single you'll probably get there, I think AD-e had a customer that hit that, but that's all she wrote. On ethanol it's flat out a no-go.

Chris

Do u think that with a single shotgun and a STG 2 walbro in tank?

[Chris@VargasTurboTech]

Depends on fuel. Single shotgun on an ethanol mixture will do 600 whp. On 100% E85 it'll be maxed around 600, depending on your car/tune you may want to step to double barrel, especially if that 600 really means 620 or more as many of us have ended up learning.

Chris

[Antoans4]

Originally Posted by Chris@VargasTurboTech

Depends on fuel. Single shotgun on an ethanol mixture will do 600 whp. On 100% E85 it'll be maxed around 600, depending on your car/tune you may want to step to double barrel, especially if that 600 really means 620 or more as many of us have ended up learning.

Chris

Got it thanks