sorry forgotten, l2 is using plug cable..
try to check the plug coil again..
then pull out the fuel filter then connect direct to the fuel hose again.. then see how is the difference.. coz fuel filter dirty sometimes also coz these problem..
take out the plug and try to see the plug...
if black colour then its fuel overflow and if the plug white colour means not enough fuel.. normal will be a bit of goldish colour..
did u change all these thing before u change the bonnet? if yes try to recheck..
is ur engine idialing ok, tht means whn u start ur car engine at morning the rpm should be 2k thn go down slowly till normal back.. if not u have to check ur throttle body...
is there any white smoke coming out from ur car?
if yes, white colour means engine out and if white with bluedish colour then its turbo out... if black... normal... hehe..
try to check 1 by 1 then check the vacuum hose again, any didnt plug or sometime there is some hole that we cant see from our eye, try to check it..
did u check the blow off? blow off spoil also can cause turbo lag..
lastly is ecu, if still the same... let me know again.. i will try to ask it from here, see can help u on this or not...
Happy New Year and good luck!