1qckdodge

I have been searching for over an hour and cant come up with a answer, I have a 99 and a good friend just purchased a 01 auto, my truck has exhaust and drop in filter, and 285s, his has an just a drop in filter and 265s, when driving the 2 trucks they feel very similar, then when you get in the throttle hard and boost comes in the 01 feels like it revs a lot quicker and the boost hits harder, mine doesnt feel the same, it runs good and has a good amount of pull on the highway but his is nice dand peppy, can the difference be the hy35 vs the hx35, and if so does that signify the different power levels, sorry to rant.

hotdram

Check this link here Click here
This page has links to the specs for each year.

~Rob

hotdram

Looks like a 99 Auto has 215 HP/ 420 Tq and the 01 Auto has 235 HP/ 460 Tq.

~Rob

Diesel Weasel

http://www.dodgedieseldatabase.com/stock_hp.htm

1qckdodge

Those are some of the links I found, I was more tryin to figure out what was causing the difference, is the hy35 giving the 01s that bit more hp and tq? the compression stayed the same for the 2 years, only thing I might have found is that the newer model or standard truck for 99 has a larger injector, Thanks again guys.

RATTLINRAM

Do you know if his truck is a ETC -SO (Standard Output) or is it a ETH - HO (High Output).
Edit: I wasn't thinking It has to be a ETC due to it being an auto. ETH only available with 6 speed.

This statement from Dodgeram.org:
The HY-35 builds boost a little more quickly than the HX-35 does when the engine load is light, so from an emissions standpoint the HY-35 is better suited to stop-and-go driving with an automatic transmission.

FWIW: The HY-35 and HX-35 are functionally equivalent under most engine loads, and the wastegates on both turbos are set for the same boost level. The HY-35 does not breathe as well as the HX-35 at higher speeds under a heavy load. The choke point of the HX35 is around 35psi; the HY35 chokes at about 29psi.

hotdram

The ETH (HO) was only available from the factory with the 6 speed manual.

~Rob

RATTLINRAM

GEEZE Rob,,,,,,,,
Give me a chance to figure out when my brain is asleep!,,,, I thought about it right after I posted,,,,,,,,,,,,,,,,,, You're QUICK

RATTLINRAM

*NOTE to self*
Change setting in data base for hotdram - Posting Time Limits = > Once every 15 minutes

1qckdodge

So its all in the turbo then, wow I didnt think that would make that much of a drivabilty difference, so the turbo is the only difference? not injectors or injection pump pressures, thanks again guys.

hotdram

Hey, after being on this site for a little over 2 years, there are 2 things I definitely know, and one of those is that the 2nd gen HO's only came with the 6 speed, the other thing I forgot (but I think it is that Ford owns Cummins).


~Rob

RATTLINRAM

Not saying that it's ALL in the turbos,,,,, but there is a some difference according to Dave Fritz's site. I've seen stock trucks that were the same year, set up the same way, perform much different from each other. I would guess that there could be a bunch of contributing factors why the two trucks seem different.

BIGHEAD

I have noticed a similiar difference between 99's & 01's. I have a 99 that did come set at 215 hp which I had a cummins tech go in & reprogram it to the 235. They were able to do that. I didn't notice any difference at all. My buddies 01 is bone stock & it is as powerful as mine was with an ez on my truck, or close to it. By the way Ford owns about 7% stock in Cummins, so I would not say that Ford owns Cummins. There is something different about these trucks,& it may very well be the turbo. I just don't know.

displacedtexan

Yep, that's it. They just bought 'em. And while they were at it they fixed the 6.0.

hotdram

Ford no longer owns any part of Cummins, its just a running joke around here.
Check out the FAQ page from Cummins.com Does Ford Own Cummins?


~Rob