i am using the vafc to do the hack and i have 450cc blue top injectors...now the car idles shitty and runs the same with the 450cc injectors so i put the stocks back in(i have the resistor box installed). i checked my codes and i am throwing a map sensor code(3) so i figured i need a missing link...is there anything else that could fix this

let me know if u need more info

 

the whole point of the hack is to decrease the map voltage so the ecu doesnt see boost. this is why you use larger injectors because if you subtract fuel (enough to not throw a cel) with stock injectors you will be to lean...and boom. i bet your car is running like **** because your fuel settings are fucked up, i would mess around with the vafc, you will eventually find the right numbers where your cars runs decent.

if not you will need the missing link to bleed to boost from the map sensor

 

yeah while the injectors were in i leaned out the vafc in narrow throttle to -50 to -30 and it ran more and more rich as i added more fuel. then i went back to -50 and it still ran badly...i guess ill need a missing link

 

what is your setup, i would only reccommend the stock injectors on a very mild setup. for reference my numbers look something like (from memory)

both hi and lo
1K-40
2K-40
3K-39
4K-39
5K-38
6K-38
7K-37
8k-37

this is at 11psi with rc 440's and a walbro pump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by horror &raquo;</TD></TR><TR><TD CLASS="quote">what is your setup, i would only reccommend the stock injectors on a very mild setup. for reference my numbers look something like (from memory)

both hi and lo
1K-40
2K-40
3K-39
4K-39
5K-38
6K-38
7K-37
8k-37

this is at 11psi with rc 440's and a walbro pump</TD></TR></TABLE>

hmm...i didnt do anything with those settings all i did was change the hi and lo throttle how do u get to those settings? maybe that is my problem. I also have a walbro fuel pump

 

i just went outside and looked at it and i think i figured it out and how i should do it...but it says 10,15,20,25,30,35,40,45,50,55.... do i set the 15 25 35 etc. rpms. thats if im in the right area

 

hope u work it out soon. if not u'll prbbly end up blowing ur motor.


instal all ur parts and have it tuned on a dyno. you can get decent results with a V-AFC.

 

i think i got it but i dont see how im gonna blow my motor unless i was stupid and tried to race my car or rev high..i havent been reving over 2500rpms tho so i think im fine.

 

I'd dyno tune it if I were you..

 

I never could get the hack to work on my 2001 gsr. I took away as much fuel as possible and it was still running rich as hell and my map was throwing a code w/ the missing link.

 

try to get rid of the missing link

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrdjay107 &raquo;</TD></TR><TR><TD CLASS="quote">try to get rid of the missing link</TD></TR></TABLE>

thats what I did when I had the hack, my missing link was defective and leaking air, also check to see if you are leaking air out of your map sensor. mine idle'd bad when when i used the -50% across the board. you should have no trouble with idle'ing 450cc injectors on the hack.

 

-50 is pretty lean