Are today's tuners on diesels reliable and trouble free? If properly installed, does more power negatively impact the longevity of a properly maintained engine? Thanks in advance. Mike
The modern diesel engine puts out ample power stock from the factory. In the early days the 7.3 PSD and 5.9 Cummins owners really benefited from using tuners. However diesel technology and performance have greatly improved since then making tuners obsolete in my book. Unless you are into racing your truck or have an older model tuners are unnecessary. Sure the tuner industry will market their product and try to sell it to you but you really don't need it.