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Might Have Found The Source To The Motor Missfiring

hesh12445

By hesh12445,
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hesh12445 Enthusiast

hesh12445

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hey guys i recently askd for help because of my engine running poor and misfiring under light throttle

well it got worse to the point were i couldnt drive the car and on cold start it would stall

sunday me and my brother took apart the airflow meters (sprayed with light break cleaner spray) and pulled out my coil packs on sparkplugs

my sparkplugs werent bogged they where not the bad but my coil packs i have found to be original and never changed the recent owner has taped the bottom of the coil with electrical tape saying that they must have cracks so for the mean time i retaped the coils and clean the plugs and AFMS, started the car and it ran BEAUTIFULLY not a miss, idled smooth and didnt hunt, i drove it for about 45 minutes giving it some gas here and there and then after it really warmed up the miss came back but slightly and so did the hunting, so on the list of thinhgs i need it will be brand new AFMS, and i think its the HKS pod filters that are shitttt so im changing to duel feed apexi and going genuine coilpacks and new plugs that should do the trick,....

now i have a HKS EVC put it by recent owner set at .7 or .9 and when its turned on neither settings actually control the boost it hits about 1.1 bar at full boost when i have it set to .7 and even when its turned of the stock WG it spikes to 1.1. Sometimes it actually works and the boost doesnt go past .7 or .9 but most of the time it doesnt work and it spikes, there is a exhaust leak but im not to sure how far up its coming from, if you put ur ear to the back passenger side of the car u can hear the poppping noise, maybe TURBO gasket? or manifold gasket? i dunno if its common for them to leak? or mayb after market exhaust system has a leak im not to sure but would that cause the spike or for the car to run like shit when really warm?

thats all ive found so far,, following are the mods

HKS EVC

HKS TURBO TIMER

3INCH EXHAUST STAINLESS STEEL

HKF POD FILTERS

hesh12445 Enthusiast

hesh12445

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im changing the coils as soon as i get the funds, ive realised that when the car drives and holds boost at .7 or .9 it doesnt back fire drives fine but its only when i turn on the boost controller it does all sorts of shit

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