hm, i installed HKS SQV (i guess the older version).
1)in last 5 days it stalled once. this is a problem since i very often put the gear into neutral, but if the revs are high (turbo has spooled high enough), it can stall due to overfueling. when it stalls, you cannot turn the steering wheel or press on brakes - imagine that on a fast corner!
2) when the cylinders are over fueled (AFR gauge reads absolutely LEAN btw, after i accelerate, it goes to rich :roll
and i put it in gear, first miliseconds it doesnt burn, and then there is a massive HIT when it explodes, and I can really feel/hear how it wants to destroy my torsen :/ maybe i should replace the torsen bushing.. BUT another test for this without even attaching the gearbox is - rev up to some 4500rpm in some 2nd or 3rd, release gas pedal,clutch neutral and press gas pedal (probably at some 3k rpm) while the SQV is still open and letting the air through - its possible to notice that it doesnt burn the first cycles since the fuel is too much, but then it burns with a massive hit. maybe its just a backfire, but im really worried about the damage to the engine..
i have bad syncrhos so i cannot switch fast - a lot of fuel gets into cylinders. so when i accelerate hard and switch gears, i try to lightly press or tap on gas to burn and minimize the overfueling