I bought a set of Needswings Manifolds from Evan (cruzinquik) and there fantastic...only problem I have is when I put the car in manual mode and go flat out through 1st...2nd.....3rd gear in 2nd gear it redlines for ages and takes awhile to go to 3rd and the same problem in 3rd sometimes I even have to let off for it to change gear then stomp on it again.

My question is, could this be due to the extra air going to the engine from the manifolds? meaning i'd need InMotion to reflash my ecu again or could this be something else? Id rather not send me ecu across the world again. I was nervous enough the first time lol.