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Thread: Lack of power even after mods

  1. 5th January 2015, 05:57 PM #11
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    Boost at the inlet manifold 13psi. At 100 kph, EGT's are 530. As soon as a hill appears, just a little push on throttle it races to 720 plus and I have to back off. As for speed, it is flat out holding 80 kph up the Gateway Bridge.
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  2. 5th January 2015, 05:57 PM #12
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    It's still lacking power.
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  3. 5th January 2015, 06:09 PM #13
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    Boost pressure is too low.
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  4. 7th January 2015, 10:04 PM #14
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    I thought they were only meant to run about 13psi standard?
    Last edited by BigBlackDog; 7th January 2015 at 10:09 PM. Reason: My spelling is not the best, often
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  5. 8th January 2015, 06:14 AM #15
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    Yep I'm pretty sure 200tdi's are standard at about 13-14 psi.
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  6. 8th January 2015, 09:46 AM #16
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    Quote Originally Posted by Defendozer View Post
    Yep I'm pretty sure 200tdi's are standard at about 13-14 psi.
    True
    But pull a lot harder at 18psi

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  7. 8th January 2015, 10:15 AM #17
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    For sure, if the injector pump has been tuned up as well, from my experience just raising boost pressure on its own doesn't change performance much.
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  8. 8th January 2015, 10:38 AM #18
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    Omy130 your EGT's definitely are a bit high imho, I know I've got a 300tdi but at 100kph it sits on 400 degrees (give or take). And to raise that fast I would say the max fuel screw has definitely been advanced, I haven't seen those sort of temps from just turning the diaphragm etc..
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  9. 8th January 2015, 11:03 AM #19
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    Quote Originally Posted by Defendozer View Post
    For sure, if the injector pump has been tuned up as well, from my experience just raising boost pressure on its own doesn't change performance much.
    Well Duh. You need boost and fuel, and an intercooler that can cope. By the OP's posts he has an upgraded intercooler, and plenty of fuel (based on EGT numbers). The thing that is lacking is sufficient boost to make use of the fuel, and at the same time reduce EGTs.
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  10. 8th January 2015, 11:34 AM #20
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    Quote Originally Posted by isuzurover View Post
    Well Duh. You need boost and fuel, and an intercooler that can cope. By the OP's posts he has an upgraded intercooler, and plenty of fuel (based on EGT numbers). The thing that is lacking is sufficient boost to make use of the fuel, and at the same time reduce EGTs.
    I know, I was merely commenting on Smith's post about upping to 18psi.
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