i just wanted to confirm what im having is boost cut.
when i first got my car, sc300 stock auto soarer 1jzgte i would notice a little back fire/miss if i went to WOT at a stop. it wouldnt really do much more then 2 misses. but now i have a good size front mount and a 3" cat back straight pipe to a hks hi power muffler iv been having what to i initially thought was ignition breakup. so i changed my oil, filter and spark plugs which i gaped to 0 .027 it runs a little smoother but the backfiring/missing is still really bad. for instance:
ill be at wot, accelerating, it starts to back fire and miss, then all of a sudden i take off like rocket and my friend said he saw 14psi on my digital boost gauge. so OBVIOUSLY i am hitting boost cut. but does this sound like normal boost cut? this is my first turbo charged engine so i dont know what it feels like (i learned what 120 speed cut feels like though
)
if this is my problem, it just so happens my buddy has a sw20 greddy bcc that hell sell me for $20 bucks (he ownes one hell of a mr2) which i know i can use for my car. but a different friend is telling me ill also need a boost controller since im removing the boost cut. i dont understand if im internally wastegated, and since its just spiking to 14psi i wouldnt imagine it would be anything really higher since i only have a catback and a front mount on a completly stock engine.
edit: id also like to mention the plugs are ngk copper and that i had one my charge pipes blow off the other day. i put it back on and got the car out of limp mode.. perhaps i still have a boost leak??
when i first got my car, sc300 stock auto soarer 1jzgte i would notice a little back fire/miss if i went to WOT at a stop. it wouldnt really do much more then 2 misses. but now i have a good size front mount and a 3" cat back straight pipe to a hks hi power muffler iv been having what to i initially thought was ignition breakup. so i changed my oil, filter and spark plugs which i gaped to 0 .027 it runs a little smoother but the backfiring/missing is still really bad. for instance:
ill be at wot, accelerating, it starts to back fire and miss, then all of a sudden i take off like rocket and my friend said he saw 14psi on my digital boost gauge. so OBVIOUSLY i am hitting boost cut. but does this sound like normal boost cut? this is my first turbo charged engine so i dont know what it feels like (i learned what 120 speed cut feels like though
)if this is my problem, it just so happens my buddy has a sw20 greddy bcc that hell sell me for $20 bucks (he ownes one hell of a mr2) which i know i can use for my car. but a different friend is telling me ill also need a boost controller since im removing the boost cut. i dont understand if im internally wastegated, and since its just spiking to 14psi i wouldnt imagine it would be anything really higher since i only have a catback and a front mount on a completly stock engine.
edit: id also like to mention the plugs are ngk copper and that i had one my charge pipes blow off the other day. i put it back on and got the car out of limp mode.. perhaps i still have a boost leak??
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