The Diesel Garage banner
1 - 1 of 1 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
have a 89 mack superliner with a 400hp 3406b. we did a full inframe and had the pump rebuilt and said it was turned up to roughly 450 truck runs good but smokes and had low boost. so we had a fairly new borg 174259 sitting on a spare engine so we put that on and the truck runs alot cleaner now but i think the wastegate is buggered on it cuz it laboured to pull 20psi. so i closed it and it pulls 27-30psi now and the old girl likes it. just wondering if the 177148 would be worth upgrading to seems like people really like that turbo on the b models
 
1 - 1 of 1 Posts
Top