S-AFC II settings for 650cc injectors

[Deathscythe]

Hey, those anyone has settings for the S-AFC II with 650cc injectors?

 

[L2RTSiAWD]

We are going to need a bit more info than that to determine what good settings for your car might be.

 

[jdmawd]

650's are about 25% larger then your stock 450's. start your correction value at -20/25% across the board.

 

[Deathscythe]

Originally posted by jdmawd
650's are about 25% larger then your stock 450's. start your correction value at -20/25% across the board.

I installed the 650ccs yesterday, and messed around with it. Right now I'm using some settings by Roadrace Engineering to get started. THey are for a 16G with 550cc. I leaned it so it rides good, but it starts like crap so I feel I need to leaned out low settings some more unless I'm wrong. If you haven't check my car out here is the run down:
Apex'i N1 3" downpipe and N1 3" exhaust no cat converter
HRC Super 20G turbo at 18-19psi
Dejon Tool Front mount intercooler
650cc injectors
K&N air filter
Dejon Tool intake pipe
GReddy Type S BOV
Iridium spark plugs
255 Hi fuel pump
Super AFC

I will probably dyno the car on friday. Thanks.

 

[jdmawd]

Originally posted by Deathscythe
I installed the 650ccs yesterday, and messed around with it. Right now I'm using some settings by Roadrace Engineering to get started. THey are for a 16G with 550cc. I leaned it so it rides good, but it starts like crap so I feel I need to leaned out low settings some more unless I'm wrong. If you haven't check my car out here is the run down:
Apex'i N1 3" downpipe and N1 3" exhaust no cat converter
HRC Super 20G turbo at 18-19psi
Dejon Tool Front mount intercooler
650cc injectors
K&N air filter
Dejon Tool intake pipe
GReddy Type S BOV
Iridium spark plugs
255 Hi fuel pump
Super AFC

I will probably dyno the car on friday. Thanks.

You will have to lower your correction value in the 1K range to get the car to idle properly. an adjustable fuel pressure reg is a good idea also, to aid against over run.

 

[Dieselboy]

Agreed, get an AFPR (if you dont already have one). If you have a high flow pump like a Walbro 255lph, then your stock FPR will be over run on your low fuel table. Once you get an AFPR, lower the fuel press. back to stock, level your low/mid/high fuel trims to around 100% (+/- 5 to 10%) and start from there.

 

[Deathscythe]

Originally posted by Dieselboy
Agreed, get an AFPR (if you dont already have one). If you have a high flow pump like a Walbro 255lph, then your stock FPR will be over run on your low fuel table. Once you get an AFPR, lower the fuel press. back to stock, level your low/mid/high fuel trims to around 100% (+/- 5 to 10%) and start from there.

My fuel pressure was at 50psi with the 450cc after installing the 255lph pump. With the 650cc, is now at 45-48psi after setting the SAFC. I will start looking for the AFPR. Thanks guys.

 

[kpt4321]

If you are going to tune right, you need a datalogger. The dyno will work for WOT, but not for idle and cruise.

 

[TSi999]

IIRC teh 660's I have put out about 44% more fuel than teh stock 450's/

 

[fwdtsi]

try the duct tape mode. It helped me alot

 

[RipperXX]

Iridium spark plugs Dude get NGK's that will help ALOT in lowering knock.

 

[Deathscythe]

Originally posted by RipperXX
Iridium spark plugs Dude get NGK's that will help ALOT in lowering knock.

Thanks for the note.