jetpilot

where should I set my stock timing for the afc hack (at the dizzy i mean)? I wont be using an msd 6btm just straight up injectors and afc to -40%. 10psi will be the max I ever boost, normaly it will be 6psi

jetpilot

I know it may have been covered quite a few times but I dont know under what to search for it that brings me back any positive results

jetpilot

up
somebody please

pollito

It really depends on the car but I would say about 4* taken out.

jetpilot

So I should set the timing at 12* btdc.

How about if I use an FMU setup? This is for a friend whos finishing his ghetto turbo as weel but not using the afc hack

Joseph Davis

AFC hack advances timing at WOT NA and at low boost. You ideally want to retard your timing 2-3 degrees (listen/read plugs/etc for knock) and run as much as the Honda MAP sensor can handle. Setting boost levels at 8-9.25 psi OBD0 and 8-10.65 psi OBD1+ will keep you from operating for extended periods of time (95% of your boosting) in the areas of high ignition advance. I also do not recommend an MSD or a BTM for an AFC hack - MSD is useless until you appraoch 400 whp, and a BTM does nothing to correct the ignition timing problem associated with AFC hacks.

As far as FMU, since they aren't dependable in high ratio/small injector setups past, say, 6 psi I wouldn't bother with a BTM. Your friend needs to step up to something else entirely if he wants more power.

99lspwr

I know for a fact the btm DOES take out timing under boost while using the afc hack....How much timing, well lets just say I dont think they are to accurate...

I use one for running 13-14 psi on pump gas w/ no problems...Not saying its the best way to tune, but the btm does indeed take timing out when you use it with the afc..