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Author Topic: Very little boost on my mTDI ALH Vanagon install  (Read 471 times)

Reply #15March 30, 2018, 01:38:44 pm

libbydiesel

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Re: Very little boost on my mTDI ALH Vanagon install
« Reply #15 on: March 30, 2018, 01:38:44 pm »
I imagine you can make it smoke and have high EGTs with the LR pump.  If it smokes/has high egts before the turbo is producing decent boost, swapping pumps is not going to fix that situation.
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Reply #16March 30, 2018, 06:39:55 pm

Zeitgeist

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Re: Very little boost on my mTDI ALH Vanagon install
« Reply #16 on: March 30, 2018, 06:39:55 pm »
I was just referring to swapping the 4BT head over to the LR pump.  But, that's for another time. 

I'm now thinking that those small automatic nozzles might be limiting the fueling needed to drive up boost with this pump.  Over in the MB IDI world, they're able to run huge Holset turbos by swapping in larger elements that vastly increase the amount of fuel available--larger nozzles don't really apply in that realm.  Since I was already planning to upgrade the nozzles, I guess I'll try that out. 
'87 300TD (OM603)-->(OM606)
'90 300D (OM602)
'89 Vanagon Bluestar (ALH)
'01 EV Weekender (AXK)
'94 100CSQ Avant (AAH)

 

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