low boost/ high egts
during normal driving my truck has low boost ( under 10 psi) and high egts ( over 1000). checked intercooler and boots , wastegate, and for leaks around the intake manifold all good. any ideas?
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Possibly your turbo? Too big for keeping good air under dd situations? I cant remember the size of it but i remeber it being a bigger one and sounds like its not a good match
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Know the size of exhaust housing of the turbo? As said above, that could be the issue. Performance turbos have a larger exh housing to flow better. Downside is they don's stay spooled up like a smaller exh housing.
Wastegate, if applicable, could also be an issue. If it is open a crack at low pressure, it bleeds drive pressure off. |
what injectors on that super b special?
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stock
---AutoMerged DoublePost--- no dont know the size off hand, but ive been asking people in know and one mentioned it may be the key inside the injection pump? know what hes talking about? |
A key inside the injection pump? Not on a VP44. There is a key way on the shaft to align it to the gear.
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maybe he meant it wasnt alined right. the injection pump was replaced by the dealer right b4 i bought it
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Doesnt sound right. My guess at this point is if your not loosing boost and everything else is in working order its the turbo, if i remember correctly a super b is a match for what your mods are and the special has a bigger exhaust and air side which works great with more fuel but witg just your chip its not spooling the way it needs too.
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When did this issue start? Any changes to the truck before the issue started?
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i always thought it was alittle doggish when i bought it and it was all stock ( i had a modded 06 b4 this one) the first thing i did was put gauges in and it ran about the same ( low boost high egts) took it to a dealer and they said it had a bad waste gate so i thought the new turbo would fix it. then i thought the turbo was just lagging so came the chip and manifold.
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