Very slight hesitation?
 

First thing in the morning my rb5 seems to be very slightly hesitant fir the first 5-6 miles. When driving through the gearbox (no more than 3k in the rev range) theres hesitation. I'm probably being picky but want to sort it, what ever it is early. Full service history and has just had it's 97500 service. Any ideas?:wonder:

Mine did this after a service and it turned out to be a dodgy plug lead.

its cause of the std ECU (AE800) most MY99 cars do it. usually between 2k-3krpm very slight hesitation on part throttle.

things like plugs, leads, mafs, cleaning boost solenoid, changing to metal Y-pipe etc will all help lessen it but will always still be there

mine went when i put in the prodrive ecu