alright, mods are stock ct-26 at 12psi, 3" turbo back exhaust no cat, hard pipes, fmic, lex afm, afc neo, afpr, walbro 255lph, n/a swapped turbo.
the problem i was having was some stuttering under boost usually around 10psi depending on throttle and rpms.
i had someone tail me and watch the exhaust; no smoke of any kind. i did a pressure test on the pipes; no leaks.
i changed and gapped plugs to .028; no changes. ran my tank close to empty and got gas from a different station; no changes.
i went to work this morning and used a 1/3-1/2 more gas then i normally do. so then i start thinking maybe a fuel leak and i am not getting enough fuel to the rail. on the way home on the interstate i tried to boost and got stuttering, coasted to maybe build up some pressure in the rail and then boosted and didnt get any stuttering.
so i got home and checked for leaks, nothing to be found. so i played with my afpr, turned it all the way down and then back up to about 35psi with the vaccum line off. realized my cold start injector clip on the thermostat housing was off and put that back on, then went to drive my car again to see if anything changed.
boosted fine, no stuttering at all. i kept it at about 3000 rpms with out any boost and then floored it and still boosted fine.
so my question is WTF is going on. did i fix it somehow, if so how. i was thinking maybe the afpr was stuck slightly open or something with the gauge stuck at 35 with the vaccum line off. or maybe my cold start injector is stuck open all the time when connected and i have the engine tuned through the afc neo with it open. i am kinda stuck. i feel better now that its running right again but what happened. i am also wondering about the loss of fuel this morning. any help, thoughts, suggestions would be greatly appreciated.
the problem i was having was some stuttering under boost usually around 10psi depending on throttle and rpms.
i had someone tail me and watch the exhaust; no smoke of any kind. i did a pressure test on the pipes; no leaks.
i changed and gapped plugs to .028; no changes. ran my tank close to empty and got gas from a different station; no changes.
i went to work this morning and used a 1/3-1/2 more gas then i normally do. so then i start thinking maybe a fuel leak and i am not getting enough fuel to the rail. on the way home on the interstate i tried to boost and got stuttering, coasted to maybe build up some pressure in the rail and then boosted and didnt get any stuttering.
so i got home and checked for leaks, nothing to be found. so i played with my afpr, turned it all the way down and then back up to about 35psi with the vaccum line off. realized my cold start injector clip on the thermostat housing was off and put that back on, then went to drive my car again to see if anything changed.
boosted fine, no stuttering at all. i kept it at about 3000 rpms with out any boost and then floored it and still boosted fine.
so my question is WTF is going on. did i fix it somehow, if so how. i was thinking maybe the afpr was stuck slightly open or something with the gauge stuck at 35 with the vaccum line off. or maybe my cold start injector is stuck open all the time when connected and i have the engine tuned through the afc neo with it open. i am kinda stuck. i feel better now that its running right again but what happened. i am also wondering about the loss of fuel this morning. any help, thoughts, suggestions would be greatly appreciated.
