So What Do I Need to Check on This Thing Now?

imelmo · Jun 19, 2013

This truck is becoming tiring. :doh:

I had some Elite 205/100's put in along with a Hellmann intercooler.

Previous mods on the truck are a billet wheeled Powermax, Innovative tunes, ITP regulated return, Absolute ported manifold, No Limit intercooler piping, AFE intake, 4" straight pipe.

Before installing the injectors and intercooler, egt's at 80mph were about 850*-900*. Boost cruising at that speed was about 8-10psi. Other than tip-in the truck was almost completely smoke free. At wot in top gear it is smokeless. Max boost was 31psi.

Now after installing the injectors and intercooler, egt's at that same speed are 1000*, sometimes more. Boost cruising at that speed is only about 4psi. It is very smokey at any speed, even when trying to take it easy. Max boost still shows 31psi.

I've been told the max boost reading could be wrong as I'm using my Edge CTS for that and it may max out at 31psi.

But what about the smoke, egt's, and cruising boost?

It acts like a boost leak but I can't find any signs of one anywhere. I expected it to be a little smokey but not like it is now. And I definitely didn't expect the high egt's. I've had Hellmann intercoolers on all my trucks and they've always dropped my egt's by 150*-200* unloaded. If it wasn't for the Hellmann intercooler I probably wouldn't be able to drive the thing.

So what all do I need to start checking besides possible boost leaks?

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Pizza pig · Jun 19, 2013

Danny, pressure test the system to see if there is a boost leak. It should be easy to find iT at that point, and use soapy water on any joints, a pinhole may not be heard but the soapy water will tell all. Is the tuning adjusted for the larger nozzles yet?

swinky · Jun 19, 2013

What injectors were in it before? New tune for the new sticks?

java · Jun 19, 2013

Did you check your ICP?

BlueWaffle · Jun 19, 2013

i guess I'll ask the obvious....have you talked to your tuner? did you have it adjusted for the 205's (PW changed?) 205's and 100 nozzles is a lot of fuel for a pmax....

imelmo · Jun 19, 2013

pizza pig said:
Danny, pressure test the system to see if there is a boost leak. It should be easy to find iT at that point, and use soapy water on any joints, a pinhole may not be heard but the soapy water will tell all.

Steve is gonna send me his pressure tester to check it out.

pizza pig said:
Is the tuning adjusted for the larger nozzles yet?

swinky said:
What injectors were in it before? New tune for the new sticks?

BlueWaffle said:
i guess I'll ask the obvious....have you talked to your tuner? did you have it adjusted for the 205's (PW changed?) 205's and 100 nozzles is a lot of fuel for a pmax....

Not yet. I sent an email to Eric but he's on vacation or just got back from vacation, so I'll have to wait 'til next week for a tune.

java said:
Did you check your ICP?

Not yet. I'm going to check it this afternoon when I have more time to drive around.

Another clue to what could be going on, I get in the truck this morning and it's idling just fine, at about 500-600rpm. Also, the smoke is MUCH better than what it was yesterday. As I drove more the smoke seemed to be getting a little thicker though and when I got back to the shop and put it in park, the idle was up at 900rpm again.

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Coxey Diesel · Jun 19, 2013

imelmo said:
Not yet. I sent an email to Eric but he's on vacation or just got back from vacation, so I'll have to wait 'til next week for a tune.

I would think that's your biggest problem. It's fueling way to hard down low. Have you tried it with stock tuning?

DHFF · Jun 19, 2013

I bet Eric can clear that up pretty painlessly sounds like tuning to me. I'd expect that from ANY change in injector size when going larger.

BlueWaffle · Jun 19, 2013

man I wouldn't mess with anything until you get a new tune. since Eric is out give Matt a shout he can shoot you something.

Coxey Diesel · Jun 19, 2013

BlueWaffle said:
man I wouldn't mess with anything until you get a new tune. since Eric is out give Matt a shout he can shoot you something.

:whs: or Chris

jdgleason · Jun 19, 2013

BlueWaffle said:
man I wouldn't mess with anything until you get a new tune. since Eric is out give Matt a shout he can shoot you something.

:whs:

A smoke tester may be your friend Danny... That way you can see a leak rather than chase a noise.

smokedout250 · Jun 19, 2013

jdgleason said:
:whs:

A smoke tester may be your friend Danny... That way you can see a leak rather than chase a noise.

That's what I did and found my clamp on my turbo broke and wasn't sealing well

Sent from my iPhone using Tapatalk

Powerstroked162 · Jun 19, 2013

jdgleason said:
:whs:

A smoke tester may be your friend Danny... That way you can see a leak rather than chase a noise.

I think Danny is gonna smoke test it with a book of matches and gasoline lol

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Cutting-Edge Diesel · Jun 19, 2013

BlueWaffle said:
man I wouldn't mess with anything until you get a new tune. since Eric is out give Matt a shout he can shoot you something.

this!! the tune needs to be adjusted.

also how are you monitoring boost?

Snake · Jun 19, 2013

Pressure drop across the intercooler

Results in loss of boost, higher EGT's, more smoke, etc

Derek@Vision Diesel · Jun 19, 2013

Definitely play with the tune before you do anything at all. No reason to jack around with it until tuning is correct.
It's amazing how terrible an incorrect tune will make a truck run.

Snake · Jun 19, 2013

Remember all those folks putting huge intake elbows on their trucks and losing boost? Same concept. Your turbo is putting 25 psi into the intercooler but you're only getting 20 psi out (completely made up those numbers, but you get the point).

To test, you could either install the OEM intercooler and monitor things. Or install boost gauges on the input and output sides of the intercooler.

JMart · Jun 19, 2013

Powerstroked162 said:
I think Danny is gonna smoke test it with a book of matches and gasoline lol

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I may bring mine over when he does.

imelmo · Jun 19, 2013

Snake said:
Remember all those folks putting huge intake elbows on their trucks and losing boost? Same concept. Your turbo is putting 25 psi into the intercooler but you're only getting 20 psi out (completely made up those numbers, but you get the point).

To test, you could either install the OEM intercooler and monitor things. Or install boost gauges on the input and output sides of the intercooler.

Yes, I know boost drops some (if injectors are the same), but egt's don't go up. I was expecting them to be the same as before at the most between the injectors and intercooler, certainly not go up 100+ degrees.

So if a tune clears up the egt/smoke issue, what about the idle? Could that have something to do with a tune also? I don't really see how.

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