hey all ..
i decided that i might be going for the 280 cams .. because i am looking for the most HP gain ..
so i am just wondering .. i am still untuned and gonna get an afcII as the tunning device .. so is there any Disadvantage to Tune the cams with the afc ?
or is the 280s too much and should go for the 272 ?

 

Yes, the disadvantage is 280s are too extreme to get a good idle, and the SAFC will leave a lot of power on the table. Better than nothing, though, if you're not willing/able to ship your ECU trans-Atlantic for a flash.

272s would be better, since you won't have a real tuning device, but the idle will still be lopey, and the power will not be great.

 

you need cam gears to "tune" the cams, safc is good for tuning for race gas at the track and then back to pump. someone correct me if im wrong, best thing for cams is flash or standalone


Edit:: warr beat me to it

 

No, you don't tune cams with cam gears. He needs an ECU tune for the cams - cam gears are not needed. They are just used to move the powerband around, but they also can help with idle smoothing if you know the right combination of settings to use.

Best thing for cams or any mods are any tuning device other than an SAFC.

Dead-Man, I forgot to mention. Since you're overseas and will probably have to rely on an SAFC, you should really get a set of 680cc or 720cc injectors. These will allow you to get all the power out of your setup while using an SAFC. You will just need a wideband o2, datalogger, and knowledge of how to properly tune the SAFC for the best combination of AFRs, timing, and boost on whatever octane you use.

 

a tuner will tune the car for me .. while using a wideband ..

 

thats kinda what i was going for, sorry

 

You will need to learn to tune it yourself. Having an SAFC tuned by someone else is not a good idea. You won't know what to do if something happens to your car or if the settings get bumped, or if the SAFC initializes somehow. You should really understand how to do it all yourself, since it is a self-tuning device...a very crude and simple one at that.

Here is a full write-up on how to install it:

How to: Install an AFC-II in an EVO 8

And a full write-up on how to tune it, including how to do it with injectors, which you will need if you want to make good power:

S-AFC/S-AFCII tuning guide

 

ah .. k thanx War ..

 

Dead-Man Inc, did you manage to tune the car with the safc 2 and the 280/280 Cams? I am installing the Cams tommorow...


Also, with the EVO 8 turbo which is the best powerband setting. Up to 7200rpm lets say?

 

no not yet ..
i bought 272s ..
and hope the members will help ya on this one

 

buy the ecuflash cable for $80 from maynes and have dynoflash make an e-flash for you, flash it yourself and use the afc for fine tuning

 

and the afc can only control one map while our ecu is senstive and will change maps all the time. my friend had it before a flash one hour the car would run like a beast and the boom very slugish i would not use that as my only tuning method.

 

the safc2 handles two maps... and it interpolates everything inbetween the hi throttle and low throttle points.

if you want a better idle you can seperate the cam but this also removes a lotta the power producing overlap, however since the durations are significantly long you will still have great gains.

safc is not capable if idle tuning. flash is not capable of on the fly tuning.

something that the socal people are moving towards is flashing for idle tuning or revlimit delete or maf cut delete and then running an safc wtih two maps so you can adjust everything on the fly.

 

Ok, i installed the Cams. My feelings are a bit mixed. Too much noise and not very good idle. However the car does not die, so is kind of ok. Goes between 700-1000 rpm at idle. I feel that pulls harder but i dont see the boost to be very willing to climb where i had set it before.


Also, the wideband did not show much of a diference (moved 0.2)...I dont know how the cams are set through the cam gears. I will look into it tomorrow that i will have more time

 

you're likely not making as much boost anymore because of the cams allowing the motor to outflow the turbo.