Engine/Transmission (1998.5 - 2002) REPORT on actual ETH EGT's towing with 275RV

[jlccc]

Went camping last week and towed my 22' TT (weighs between 5000-6000# loaded) up and down some 8% grades. In addition to the trailer I had a 700# ATV and another 100# of tools, etc in the back of the truck.



As you can see I have the EZ w/ boost elbow, 275RV injectors and the BHAF. With the six speed running in 5th gear I was able to reach 1300+ degrees F and could keep it climbing to 1400 if I wanted. So, it looks like I need to find a way to get a little more air into my engine and/or cut down the exhaust restriction. It was frustrating because I had lots of pedal left, just couldn't keep it cool. (Of course I was already going 65-75 up some 7-8% grades). My goal isn't necessarily to climb hills faster but rather to make it so I don't have to constantly watch my pyro gauge.



Will losing my muffler help much? I will eventually get a 4" exhaust but may try the straight pipe first.

 

[Gary - K7GLD]

Do you by any chance know what your boost was at maximum? Based on what others with the EZ have stated here, I would have expected slightly lower EGT's...

 

[jerrethomas]

removing the muffler will help but it will be marginal. sounds like you really need the 4 inch exhaust. i'd keep the egt at 1200 degrees max or less to avoid making pieces

 

[Bigsaint]

elevation...

Was thinking the same as Gary. My egt's lowered dramatically when I went from stock to the EZ with boost elbow. I wasn't towing anything but climbing the same grades at higher speeds for comparison sake. What kind of boost numbers are you seeing ? I mentioned elevation as many members here have complained of higher egt's while climbing the real mountains, not like I have here . I would have thought the BHAF should have more than enough flow, for what you are doing ? Is it possible that the air filter is dirty ? My BHAF performs right along the same lines as my last filter, a K+N RE0880, in my truck under the conditions I drive.



Scott W.

 

[jlccc]

elevation and boost

Elevation was 7000 feet and boost levels fluctuated with my foot of course but were between 22 and 26psi most times. Like I said, I had lots of go-pedal travel left.

 

[OO]

I was able to hit 1350 degrees with my stock eth above 7000' pretty easy.

 

[Barry]

I think I have seen 950 once(post turbo). Coming over Raton Pass in Co. with a 5er and a flat bed trl. behind the 5er with a Goldwing on it. 65 mph, 6th gear and 25 on the boost. It was about 90 degrees oat. My recommendation is to get a good 4" exhaust system on that truck quick before it starts making pieces big enough to read part #s on.

 

[Floor It]

I have the same combonation=Edge EZ,RV injectors. When I was towing Katdiesel back from may maddness we went through colorado and over and through Esienhower tunnel. I could get to 1300 deg but it took awhile and that was at 30 lbs of boost. The only difference between your truck and mine was that I have a 5in exhaust and no muffler so I would say you need to go to a 4in exhaust and a free flowing muffler. Oh, are complete towing weight was 20,380lbs GVW

 

[CUMINNTSTRKN]

Originally posted by Barry

I think I have seen 950 once(post turbo). Coming over Raton Pass in Co. with a 5er and a flat bed trl. behind the 5er with a Goldwing on it. 65 mph, 6th gear and 25 on the boost. It was about 90 degrees oat. My recommendation is to get a good 4" exhaust system on that truck quick before it starts making pieces big enough to read part #s on.

barry



be careful when running your probe post turbo. tdr member boost put his probe post turbo and he couldn't get it over 950 with dd2's and a comp on 5-5. he moved the probe and was hitting 1500+. there is a big difference in placement.



jim