'03 with HE351 same boost and higher egts

'03 with HE351 same boost and higher egts

04-10-2009, 03:23 PM

#1 (permalink)

CToney

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Join Date: Jul 2001 Location: Gull Lake, Saskatchewan Posts: 719

'03 with HE351 same boost and higher egts

I just put on a HE351, 4" elbow, full 4" exhaust and a ATS exhaust manifold. My boost is now lower and my egts are higher. It is harder to get to 26 psi now and when I get there my egts are now 1300. My boost elbow screw is almost all the way in. The truck seems to spool quicker now with the manifold and 4" exhaust but I thought my egts would be super low. I am running the Jr on Performance. What are my problems? Wastegate opening prematurely? Smarty defueling past 26 psi (stock boost levels)? Less drive pressure = less boost?
I have not towed yet but I wanted to lower my egts and free up a bit of power without adding much more fuel. I realize that no one probably has my exact setup. But I was expecting higher boost and lower egts.

__________________
'03 2500 QC LB 4x46sp CPL 8228 Smarty JR, FASS 150/95, Timbrens, airbox mod, Tranny Filter, Cool Hose, HE351 Centramatics, ATS ex manifold, 4" exhaust Cooler Tubz DT Free-Spin Fluidampr 150,000 mi 33psi 1250F SW3
'92 W350 w/ Hydra-Dec PTO hyd pump NV4500 HO injectors, 16cm housing, Borgeson Shaft

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