JensenC said:
Are you an DC engineer? A diesel mechanic? Who are you to say a particular mod improves reliability on a vehicle where millions of $$ were spent engineering all the components to work together? You are not an expert and shouldn't make uneducated statments about what you think would improve vehicle reliability and what stresses a vehicle drivetrain should be able to handle.
Well gee, lets see I did at one time work on Mack's, Kenworth's, Peterbilts, Internationals, Ford's, ect. ect. , so yes I think I know a little bit about what these trucks should be able to handle power wise.
If DC, Ford and GM have built these trucks to be at their limit from day one then they have failed in their design jobs.
You can in fact buy many mods that improve over what the factory designed, the intake systems are improved by the aftermarket, there are far better turbos sold by the aftermarket then DC, Ford and GM have used in these trucks, the replacement transmission pans and rear end covers are vast improvements over the stock units. The plastic intercooler I have is not as good as aftermarket units.
Transmissions built by Suncoast, DTT, ATS and others are big improvements over what we get from the factory.
You see when DC, Ford and GM build something they also look at the cost of items which means that you don't always get the best parts available.
Magnuson/Moss was not brought about solely for oil and air filters as you want to imply.
Magnuson/Moss was brought out for any and all replacement parts for an automobile, and yes sometimes those replacement parts do improve over what the factory gave you in better performance. It also requires that the manufacture be able to prove that the aftermarket part is what caused the failure, if they can show that was the case then no they are not obligated to warranty that repair or part as the part was not from them. The law does not give the dealer/manufacture the right to just look at your vehicle, see an aftermarket part on it and just deny the vehicle warranty.
If these trucks can't handle an extra 50 to 90 horse power then they are way under engineered, I would suspect that DC, Ford and GM have built in a pretty good safety factor to ensure these products live, now when you start adding 200 plus horse power, 900 foot pounds of torque and treating every stop light like you were at an NHRA starting tree, then yes you are going to break things and no DC, Ford nor GM will be obligated to warranty what you broke.
The reason the makers of these boxes tell yo to un-install them before going in to the dealer for diagnostics is because the DC, Ford and GM scanners are looking for a set standard in the computer programs and their equipment does not know how to handle the programmers or boxes settings, the dealers scanner thinks something is wrong and gives wrong information to the tech.
Most boxes and programmers will also tell you that if your vehicle starts to run bad to remove their program first, if that fixes the problem then the problem is within their program and not the vehicle. If the problem persists then the problem is not in their program but something else on the vehicle.