First of all, I would like to say, hi, I'm new here. Been a member over on the TDR for several years now, thought I would come over and check this site out. I also have a problem.

Whenever I fire up my truck, EGTs jump almost instantly to about 400 F. This has been going on ever since I put in the pyro, before all the mods. Also, when I go to shut her down, no matter how long I wait, EGTs will NEVER fall below 450-500 F. My operating EGTs are also high. Very mild acceleration will net me 800-1000 F unloaded. Crusing EGTs at 70 mph, 5-8 psi of boost is 800-1000 F unloaded. If I get in it, I see 1200-1300 F in about a second. Also, going up a mild hill, I can see 1200 F at 45 mph unloaded even with OD off and TC unlocked.

I figured it might be a problem with the pyro, so I sent it out to autometer to have them look at it. They said it was fine and also shipped me a new wiring harness with probe. I also checked for torn intercooler boots, etc., for somewhere were boost could escape, everything looks alright. Although, my thoughts are that it wouldn't really be a boost leak because it wouldn't effect my idle EGTs since I shouldn't be making boost at idle?

Any ideas??

 

maybe your intercooler is clogged up with crap from the blow by tube...if you turn off you a/c will it drop down to 300-400 range at shut down

 

Mmmm...interesting...never thought about the intercooler. How could I clean all that out? Also as far as the A/C thing goes, that is with it off. With the A/C on, it won't go below 600 F!

 

my brother in laws truck was doing that but i found his exhaust brake was sticking blocking exhaust. i didnt see were you had ex brake but make sure your exhaust is free.

 

the best way to clean the IC is to take it and the radiator out of truck and power wash it just dont get super close and blow a hole thru it with the water pressure...and like Pap said make sure no part of you exhaust is clogged

 

Well, I have no exhaust brake. I'll check the exhaust, but when I put the pyro in, I still had the stock turbo/exhaust, so everything's been replaced. I'll take the IC out and wash it this week. I still have the fuel heater bowl in the truck. Could an air leak into the fuel system cause high EGTs???

 

How is your idle? I know when my truck would idlw at 900-1000 RPM I would get teh same thing

 

check for any boost leaks, and I assume you put the pyro before the turbo?

Are your ddp dv's full cuts?

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your sure timing is still at 17*?

 

My idle is generally low 700-800 RPM. I've had it higher, still the same problems. I'm building a rig to test for boost leaks. Pyro is pre-turbo. DVs are not full cut. DDP claims 20 more hp, less smoke, less EGT over 191s.

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As for timing...pretty sure it's still at 17. I set it, and then checked it a week or so later when I thought I was having hazing issues, still dead on. Might check it again, just to be sure.

 

there 022's then

I would recheck timing just to make sure, have you checked the easy stuff like air filter and exhaust for restrictions?

what washers did you put in when you swaped the injectors?