Without a way to add fuel or spark, leave them in. Otherwise, ditch 'em. Pinning the secondaries
DOES NOT get you the same gains as removing them. I repeat... Pinning the secondaries
DOES NOT get you the same results as removing them. Removing the secondaries entirely eliminates the secondary throttle rail that goes through all primary and secondary ports. This is where any high RPM gains would come from. Pinning them open is
ONLY A TEST mod to figure out if you can live with the low RPM losses before actually taking them all the way out to get the high RPM gains. I can't tell you how many times I've had to type words to that effect.
BTW Ghost, you've got some fuel or spark issues there bud. That's one of the jumpiest dynos I've ever seen. Did they have trouble getting a signal or what?
