Engine/Transmission (1998.5 - 2002) Engine modifications and HP listings

[JBAndersen]

Are there any comperhensive tables or listings of various mods and their corresponding HP (measured or estimated) here on TDR or any other web site?

 

[DieselRam30]

There might be. Part of the problem is that different modifications in combinations with others could result in different power gains. That is, one modification makes another better by virtue of the combination. Every truck and set up is different which makes it difficult to compare. Electronic modifications for the 24 valve are a little easier to quantify, but even these depend on the combination to some degree.

 

[JBAndersen]

DieselRam30, thats exactly my point. All suppliers advertise HP gain on each and every product, but you never know for sure what you get in the end after having done exhaust, injectors, some electronics and turbo etc. If we could gather a list it could be possible to see some interesting numbers on what the different combos produce.

 

[Lsfarm]

Except for Banks

Except for Banks, most products are rated at the rear wheels, not at the flywheel. There have been quite a few threads showing 'x' injector or fuel box rated at 'xx' hp dyno'ing at very close to the advertised HP.



Now it's not always correct to add up the injectors and fuel boxes and to expect to get a hp increase exactly matching the sum of the advertised hp gains, but it does work surprising close for a lot of add-ons.



One item that is hard to quantify would be a bigger turbo. If you are only slightly overfueled and go from say a HY35 to a HX40, you will see some HP increase but certainly not as much if the same truck was grossly overfueled before adding the bigger turbo.



I haven't seen an actual chart, but there are a lot of knowledgable folks on this site who will be glad to share their experiences and advice.



PM me if you have specific questions, I'd be glad to try to help



Hope this helps, Greg L

 

[Ol'TrailDog]

Recent issues of TDR also have articles with comparisons between various boxes.