Glanza Problems!! Help please!

[ianmcintoshi]

OK, So my mate has a glanza and recently when the foot is planted around 5.5 6k revs the car loses all power and the engine missfires and stutters and sort of pops and bangs. It kinda feels fuel cut but more harsh... and he has a piggyback ecu so its defo not fuel cut. Any ideas???

Thanks in advanced lads

[funny onion]

Fueling too lean. Get a wideband on it just to check.

[5T4R7ET N/A]

check the condition of your spark plugs. should be brown in colour.

also could try to reset ecu by disconnecting battery for 30mins. might help

[mattyD]

i was gona say it could be something to possibly do with the spark somewhere along the line

check all plugs/leads etc etc

[TrisK]

spark plug gap?

or leads i would say