1st Feb 2020, 17:28
Overboost can cause your turbo to stop boosting. Check the 5mm pipes on top of the engine to the back; also on the top of the turbo is another pipe that works the nozzle ring which controls your boost, and the boost sensor on the top back plate on your intercooler. Hope it helps; it fixed my 2006 Shogun Warrior 2.5.
18th Jan 2018, 18:19
Your waste gate is probably stuck open; we got this going up a big hill in the overtaking lane!