Jay

What are the stock injectors size?

Do you have a stock or aftermarket fuel pump?

BSeriesTurbo

if your at zero then the ECU is still seeing boost, therefore giving you the code and running like shit.

I think the basic settings for the 450's are rougly -34%, and then tune from there.

The whole point of the afc hack is to essentially change the map sensor reading to the ECU by a set algorithm, variable being your percentage's that you put in. If you don't drop that signal to the ecu, then it will see boost, flip out, and throw lights and go into limp mode.

Set the afc to -34% all the way across the board and then finetune from there.

audiophile24

if i set it at -35% all the way across the board then it bucks real bad at 4400 rpms then seems to shut down not going any higher in rpms i have vtec engagement at 4800 l>h then from h>l at 4600 my unmatch is set at +2% and +3% set by millennium

Jay

.

Also, do you have an afpr or at the very least, a fuel pressure gauge? Do you have a wideband O2?

BSeriesTurbo

thats why I said set it at -34% and TUNE from there. If you expect the car to be worth a crap and the motor to last, you really need to have a wideband o2. OR at the very least an a/f guage, even though they are rather inaccurate you set it a few bars in the green and it will be ok...

audiophile24

i have a stoichiometer and yes i have a walbro 255lph fuel pump and a b&m fpr i have been tuning from -34% correction my fuel presure is set at 40psi on the filter and at 38 on the rail the ignition timing has been retarded by millenium and the cam timing was done by gene from tuners edge and i am not sure if i have a wideband or not.but i have not changed anything since the afc died on me.......

audiophile24

just went out for an ass tune it pulls hard now but chops up at 4000 in first gear just daily driving.....meaning less than 60% throttle and.......under hard acceleration breaks loose.....but i can't just drive the car.....

BSeriesTurbo

what is your throttle crossover settings at?

I think they should be set at 98 99

audiophile24

mine are set at 15 and 60 i thought they should have been set that way

Jay

Going to disagree with that. 15/60 is adequate.

edit: I might bump up high throttle x-over to 70-75 personally.