Originally Posted by
Twisted_Metal
Is it my imagination or is the AXE236R21 X2 Cobra slower than the AXE198R21 Cobra ? I have both engines and it seems like the original Cobra had more grunt, but then again mine had over 3 gallons and two rods before I retired it. The newer X2 just seems to barely hold in comparison? maybe it needs more time any suggestions?
Switch put the p&s in the other case and see
Also
What restrictor are you Using?
Only 3gal on a axe ENGINE????something is wrong . your tune or rod issues must have caused internal damage. most axe engines last 8+gallons, they start to come to life at 2-3 gal