In need of help urgently !

[Yakuza]

I'm going to change my turbo, intercooler, fuel pump and injectors soon.

Do I need to get an after ecu or piggyback of some kind ?

Thanks

[AeroGrace]

yes....you'll need it to manage your bigger injectors....

[Guest RedLineGTR]

emanage...powerfc...would be a choice adding those extra does send the stock ecu abit spastic...unless u get a rechiped one..or something like that.

[Yakuza]

what if i used a standard ecu and i only change my fuel pump + turbo + intercooler. Is it possible ? I dont want to spend too much money on this project .

Would an SAFC2 be much of a use in this case ?

[AeroGrace]

well you won't be maximising the efficiency of your mods.

as RedlineGTR said, standard ECU isn't exactly suited to run anything out of it's stock specifications by too much...especially if you're running aftermarket turbos...

SAFC2 is sorta like the entry level fuel adjustment computer...but something like the PowerFC would be much more versatile

[GTS-t VSPEC]

Yakuza, Yes it will work, but it certianly won't be as good as having management. What sort of power are you chasing, I'm able to get 400rwhp from stock injectors.

[2rismo]

Flowed stock injectors?!??!

Adrian

[rob77]

I'm making comfortably 344hp @ wheels on my stock injectors... once the tuned ecu goes in it should make 370hp around 1 bar on the turbo.

[Yakuza]

I'm aiming for 350hp at the rear.

rob & GTS-t VSPEC,

what sort of management are you guys using at the moment ?

[MRK25T]

rob, i've got 250rwhp and my injectors (stock) are at 70% (according to powerfc) duty from memory. Is there a ratio/relationship between power and injector duty?

When I end up putting the Z32AFM on I want to up the boost to 1.1bar or so in an attempt to reach 280rwhp without having to get injectors (I have a adj. fuel reg and 600hp fuel pump).

Mark

[adam 32]

haha urgent help? i was expecting a stranded on the side of the road story...

rob what is the duty cycle on your injectors at the moment? id take a guess that youd be running out of flow at 370rwhp on stock fuel rail pressure

[rob77]

Pauls doing 370hp on his injectors, so I dont see why I cant. The injectors are going for a clean and to be test flowed prior to being tuned. I'll be installing a wolf3d ecu next week, keep you posted on my dyno and power output.

[Yakuza]

adam,

yeah its kinda urgent help thingy coz i'm going to fix the parts soon so I want feedback from you guys.

My friends say its okay if i run low boost. lets say 0.8 bar ? max boost 1 bar.

What do you think guys ?

[rob77]

If you have a small budget, you could stick to the stock injectors, get a bigger fuel pump like a bosch 910 (both gtst-vspec and I run one of these) and use a safc2. Granted you wont be able to play with your ignition maps, you will be able to adjust fuel in and out. The car would still be quick on the road, but if you've gone to the trouble and expense of a bigger turbo you really should put in the full ecu to compliment it.

[GTS-t VSPEC]

I'm using a Malpassi fuel reg to increase the fuel pressure, that's why we are able to get more power from the stock injectors. I'm running the Wolf 3D ver 4 plug'n'play. Injectors are at about 80%.

[Yakuza]

thanks for the info rob77 & GTS-t VSPEC !

yeah i'm kinda on a budget right now because i dont want to spent too much on the car. I would still need something to control my fueling, so definately an SAFC2 is good enough for that.

I have a turbo & intercooler at the moment in my room.

The things i have to get are,

- fuel pump

- safc2

- intercooler piping

Does the adjustable fuel regulator do much difference ?

Do you think I should put in an adjustable cam gear on the exhaust side and retard it by 4 degrees ?

Thanks again all of you for your contribution !

[GTS-t VSPEC]

I did the cam gear, and in mine it made phuck-all difference, but others have reported gains.

Depends what power you plan on gettig, anything more than 340rwhp on stock injectors will require an increase in fuel pressure.

Rob and I both use the bosch 910 fuel pump, his is in-tank, mine is external.

[Yakuza]

My target is 350bhp on the rears. How much is the 910 ? Why did you chose to run it externally ? What cam gear are you using ? Does the brand make a difference ?

thanks.

[GTS-t VSPEC]

Brand of Cam gears will make no difference, I have the Trust one. I'm running the 910 externally from a surge tank, and using the factrory pump as a lifter pump. The 910 is a bit over $200.

[Yakuza]

How much did you get your Trust cam gear for ?

When you run the fuel pump externally, do you get the whinning sound ? Is it audible ?