Hi Guys,

I'm having an issue with the engine I've recently put into my civic sedan,

It's a Vei.. so it would have been originally a D15z? That I replaced with a D16b.

The car idles great, no smoke coming out of the exhaust. But the engine "hesitates" and losses power when I'm coasting through gears or randomly in general. It shudders and losses power, then it'll jerk and power will be on again

When the engine is cold, or under load, the car revs fine though. Any suggestions as to what the problem may be?