lees petrol more speed

[carterjohn]

after i sorted my split pipe i went for a blast,the car was boosting but didnt seem as quick (half of a tank).when i drove home from work 2day (quarter of a tank left).it was boosting and pulling really well.has anyone else had this experience? i dont meen its lighter,i meen its scarey fast when accelerating

[Adriansturgess]

Have you got sequential twin turbo\'s? Must say sometimes my second turbo seems more pronounced than others. Sometimes it seems to take a nap (just when you need it).      I don\'t know if it has anything to do with how much petrol is in the tank though - never thought about that one.

[carterjohn]

yea m8 im running sequential,ive also been running my mines ecu the only thing i can think of is i added octane booster.maybe the extra few rons are meeting the jap mapped ecu,does this make sense to anyone?