Lowering EGT

[FFSchooley]

What are some ways that I can lower my EGT's? My truck is pretty much stock but I plan on starting to BOMB it soon. The problem is that my EGT's seem to like to hover at around 1000 pre turbo, and anytime I pass some one or climb a hill or just put my foot into it a little, my EGT's get up to 1200 really quick. I don't know if this is normal or if there is something wrong with my truck, but I am worried that once I start BOMBing I am going to have a big problem. I was going to do exhaust but it dosn't seem like it would help. Any ideas?

 

[MikeBeggy]

I have been there done that having lots of new found power but having to back-off on hard pulling hills. There are many products that I have tried each claiming to reduce EGTs. For me, the change to an ATS 3 piece exhaust manifold dropped my temps a full 100 degrees before the turbo. My latest change was to Piers modified HX35 and I got another 100 degrees. Now, towing heavy loads at 6 to 7 thousand feet elevation, I never and I mean never see over 1100 degrees. (used to be able to push beyond 1300 or 1400). I don't look at my pyro too much anymore.

 

[Rob Thomas]

FF,



A BHAF will help, and thats real cheap compared to the alteratives.



Later, Rob

 

[work2muchplay2little]

First off do some searches on EGT, air intake, exhaust and turbos. Managing EGT's is basically a balancing act between dumping fuel in and providing adequate air flow to control the temperature. Many have found that a large air filter (BHAF) helps 100-150 degrees, a larger diameter exhaust system about 100-200 degrees, and if you're BOMBing aspirations exceed these, then a turbo with greater air flow than is the next logical step. With my current set-up and FMS set on 60% like usual, I can hit 1700 degrees if WOT more than 15-20 seconds. However, would be pegging speedometer at this point, so not too big a problem. But if towing, would be a big problem, and have to turn FMS off.

 

[Joseph Donnelly]

First and easiest is a bigger turbine housing. The 14 cm2 saves about 100 deg. The 16, 200 deg. However the 16 doesn't work as well with the 24 valve because the electronic air-fuel control makes it sluggish at the bottom end while building boost. Low restriction muffler without resonator may help 100-150 deg. Might not--test results have varied. Next is a bigger turbo, an expensive change. For example, the HX40 and 4" exhaust should help about 200 deg. After that, the Diesel Dynamics camshaft helps another 150 deg. or so.

 

[Chipstien]

Are you bone stock?

Put on a boost module and disable the wastegate. Or install a Edge fueling box as this takes the place of a boost module. I could never get my truck above 1100 (before UFM)

 

[Steve Campbell]

seems to me...

that the EZ or DD-TTPM alow the EGT to go down because of the timing change incorporated in them.

 

[Fiver]

Question: Does the EZ tend to lower EGTs if one also has 275 injectors and a 4" exhaust or would one need additional help via new turbo or boost module/elbow etc. ?

 

[Steve Campbell]

The EZ comes with...

an elbow for the wastegate and a built in module (so does the DD TTPM. )



The EZ-on its own-lowers EGT.

The 4" exhaust lowers EGT.

The 275 injectors... I do not have any experience there.

... So, I guess the answer is yes, the EZ lowers temps with the above mentioned modifications.

 

[Chipstien]

I don't have probs until the UFM is above 3. And that is with the HY. Of course on 5/5 I can bury the EGT's past 1600. I need a larger turbo. . Oo.