Originally Posted by grizz1

Hi all - I'm 18 tanks (2.5 litres) into my new 5 Port .21 and have a couple of questions.
Took truggy out to the track today and gave the Go tech it's first proper run on track (up until now it's been slow running in and some 1/2 to 3/4 throttle stuff on the last few tanks before today).
Engine still seemed pretty tight and not overly responsive. I fiddled with the tune a bit, but couldn't really get it to pull in the lower rev range all that well. I'm sure the tune was not too far off. I am running a JP-3 pipe which I am thinking might be part of the problem (Dynamite 086 and 053 on the way). I have read in here that the JP-3 is not the best pipe for the 5 port.
Is the engine likely to still be "tight" and sluggish after 2.5 litres ? and would the pipe make that much difference ?
All my other engines have been sweet after 12 - 15 tanks, but this Go Tech is still nearly impossible to turn over by hand, with enough pinch to jam it solid on the starter box still. This is obviously my first Go Tech engine so I am a little curious as to how everybody else found them during break in and early running.