hey guys .
so i have a weird issue ive never been able to figure out .
i have a turbo swapped lh2.4 240: B230fk,19t etc etc etc all the usual stuff .
when snapping the throttle shut fast after hard acceleration it stumbles hard till sorting itself out, if at low speeds it will stall.
now this has happened for about 2 years, 3 different turbos , multiple mafs, iacs, tps etc etc if it could be changed it has been .
now we have finally figured out the problem but it creates more questions then answers .
if i unplug the iac , no more stumble , i can snap the throttle over and over and it recovers perfectly.
with the iac unplugged idle is at 1200 and hunting every now and again .
it seems the iac just cant react fast enough after hard pulls .
now the short term solution is delete iac completely, install a ball valve in its place and manually set the idle ,that should sort the high idle and hunting while still fixing the stumble
its far from an ideal solution though .
what could be causing all my iacs to not react fast enough ?
ive seen numerous people running high boost thru big turbos with no issues .
but ive also read heaps of threads with similar issues .
does anyone have any ideas? things to check? a more elegant solution then running a plumbers ball valve and going full ghetto haha
any help would be awesome this issue has been driving me mad for way to long
so i have a weird issue ive never been able to figure out .
i have a turbo swapped lh2.4 240: B230fk,19t etc etc etc all the usual stuff .
when snapping the throttle shut fast after hard acceleration it stumbles hard till sorting itself out, if at low speeds it will stall.
now this has happened for about 2 years, 3 different turbos , multiple mafs, iacs, tps etc etc if it could be changed it has been .
now we have finally figured out the problem but it creates more questions then answers .
if i unplug the iac , no more stumble , i can snap the throttle over and over and it recovers perfectly.
with the iac unplugged idle is at 1200 and hunting every now and again .
it seems the iac just cant react fast enough after hard pulls .
now the short term solution is delete iac completely, install a ball valve in its place and manually set the idle ,that should sort the high idle and hunting while still fixing the stumble
its far from an ideal solution though .
what could be causing all my iacs to not react fast enough ?
ive seen numerous people running high boost thru big turbos with no issues .
but ive also read heaps of threads with similar issues .
does anyone have any ideas? things to check? a more elegant solution then running a plumbers ball valve and going full ghetto haha
any help would be awesome this issue has been driving me mad for way to long