I currently have a AC 190 and I'm new to tractor pulling. I'm
having extreme trouble with my turbo. I currently have a 4LF turbo
on my tractor. I'm looking for information on tuning this turbo and
rebuilding tips. I also have a 4LE turbo for a spare. Which one is
the better turbo?, or do you know of a better turbo I might need to
purchase that might be easier in setup and tuning. Any help is
greatly appreciated.