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Old 09-26-2010, 03:28 PM
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High EGT's

I have had an ongoing issue with high EGT's since upgrading from a DiabloSport Predator 100hp tune to a 120hp tune from DP. With my old tune, I would only have to watch my EGT gauge when passing someone while going up a mountain and that was only if I was at WOT for a significant time. With the new tunes, I am backing out at 50mph on flat ground due to high EGT's. I have also noticed lower boost at WOT, I would peak at 30psi before and now peak around 24-26psi.

What I have done so far...

Borrowed a 17* HPOP and sent my pump to TE, no change with borrowed pump but the modded pump took me from 1250* @55mph to 1250@50mph when going WOT from a stop.

Replaced leaking ICP sensor, no change.

Installed 6.0 IC with new lower boots, no change.

Installed ceramic coated bellowed up-pipes, no change.

Cleaned all boots, replaced o-rings and leak checked; no change.

Pulled EBP tube and sensor, cleaned both, fixed hole in tube and removed sensor bypass; no change.

Anyone have any ideas? I have been in contact with Jody, but I think I may have stumped him. I do have a AE, so I can post logs of whatever is needed.
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Old 09-26-2010, 03:45 PM
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Have you done any turbo upgrades? Sounds to me like you need to get more air into your engine to bring your temps down. When I blow my intercooler boots off my egt's go threw the roof. All that fuel with no air to burn it off clean...

Last edited by Dumz1; 09-26-2010 at 03:56 PM.
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Old 09-26-2010, 04:46 PM
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A bigger turbo is on my list, but still a ways off. I haven't blown any boots yet, unless you count my boost leak check assembly popping off.
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Old 09-27-2010, 06:10 AM
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Makes sence to me that you are getting more fuel into the engine but not more air. Get more air into the engine and your temps will go down.
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Old 09-27-2010, 01:26 PM
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It makes sense to me too, but California and aftermarket turbo don't exactly go together. Already dreading what they will say about my existing mods.

Jody is thinking ICP pressure might be low, so I'm going to do some more logging for him and hopefully figure this out without spending too much more money.

Thanks for all the suggestions, keep em coming.
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