I may be getting older, but I refuse to grow up!
Join Date: Jun 2012
Location: PACIFIC N.W.
Depends on the rest of your build and where and how you ride. The +3 TB is good for up to 75-80 HP. You'll need compression, stroker, porting, big valves and HDD5050 big cam to get to 70 HP. To use a 58mm TB with that build may decrease low end torque and throttle response because of reduced velocity. It will also move your powerband into the higher RPM range. To make use of the 58TB you should have at least 14:1 compression, big bore or stroker, HDD5150 cam or similar and of course porting and valves. The 5150 is a race cam and a build with a 58mm would be considered a race build and require race fuel because of compression.
'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.