Author Topic: crusing at 75mph and maintaining 5-7psi?  (Read 3018 times)

April 17, 2005, 07:29:24 pm

sethyboy85

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crusing at 75mph and maintaining 5-7psi?
« on: April 17, 2005, 07:29:24 pm »
I just installed a boost gauge in my jetta nd noticed that when cruising along I maintain 5-7psi at 75mph, even 5psi at like 55mph... is this normal??

Now I can really see how putting a FMIC would be extremely beneficial to these cars as I attain 10psi quite regularly and having the almost exact same spec turbo in my Daytona I know from having a Probe mounted AFTER the IC that sustained boosting of 10-12psi like that does start to make some heat, of course that was with the factory IC but still
91 Dodge Spirit R/T 2.2l T3/T4, Big valve head, 3" exh, NPR IC, goal. FS $4000
85 1.6lTD Garrett, NA34X mercedes INJ,2.5" turbo back- Sold
85 TD/91 Eco need to put together to make 1 good car
86 190D Merc with only 392k
96 Volvo 850 Turbo wagon, 1 grainger valve and 250hp/280tq

Reply #1April 17, 2005, 09:05:58 pm

QuickTD

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crusing at 75mph and maintaining 5-7psi?
« Reply #1 on: April 17, 2005, 09:05:58 pm »
On my '97 1.9TD I maintain a steady 6-8lbs at a 100km/h (60mph) level cruise. At 120km/h (75mph) I get about 10psi. I would consider your figures normal for a 1.6TD with its larger turbo.

Reply #2April 18, 2005, 01:36:34 pm

fspGTD

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crusing at 75mph and maintaining 5-7psi?
« Reply #2 on: April 18, 2005, 01:36:34 pm »
Sounds about right to me too.  I would expect to see about 3 or 4 psi on a stock A1 1.6lTD cruising at 65mph on flat road.
Jake Russell
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Reply #3April 21, 2005, 06:09:09 pm

ejust

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crusing at 75mph and maintaining 5-7psi?
« Reply #3 on: April 21, 2005, 06:09:09 pm »
my guage shows about 3psi at 75mph (120km/h) cruising for my A2 Jetta 1.6 TD and it will only peak at 9psi at full boost. :(
V-dubs r cool n Audi's rule,
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'86 Audi 5000S

Reply #4April 21, 2005, 06:55:47 pm

sethyboy85

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crusing at 75mph and maintaining 5-7psi?
« Reply #4 on: April 21, 2005, 06:55:47 pm »
modded intake (Intake from one of my dodge turbo's stuck where airbox was and used clamp to make it O instead of oval, then a cone filter thrown on the end) and hacked exhaust before axle net's me 12psi now at the upper rpm's. Less smoke than before and my back tire looks like metal and not black soot now  :lol:
91 Dodge Spirit R/T 2.2l T3/T4, Big valve head, 3" exh, NPR IC, goal. FS $4000
85 1.6lTD Garrett, NA34X mercedes INJ,2.5" turbo back- Sold
85 TD/91 Eco need to put together to make 1 good car
86 190D Merc with only 392k
96 Volvo 850 Turbo wagon, 1 grainger valve and 250hp/280tq

Reply #5April 21, 2005, 06:58:49 pm

DVST8R

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crusing at 75mph and maintaining 5-7psi?
« Reply #5 on: April 21, 2005, 06:58:49 pm »
I make about 2psi at 75mph, it barley registars on the gauge, but I can make 22psi in first gear if I choose.  :twisted:
The Brett of the board...



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Reply #6April 21, 2005, 07:05:41 pm

sethyboy85

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crusing at 75mph and maintaining 5-7psi?
« Reply #6 on: April 21, 2005, 07:05:41 pm »
Quote from: "DVST8R"
I make about 2psi at 75mph, it barley registars on the gauge, but I can make 22psi in first gear if I choose.  :twisted:


yeah yeah yeah... my other car is the weekend warrior/backup for the jetta
91 Dodge Spirit R/T 2.2l T3/T4, Big valve head, 3" exh, NPR IC, goal. FS $4000
85 1.6lTD Garrett, NA34X mercedes INJ,2.5" turbo back- Sold
85 TD/91 Eco need to put together to make 1 good car
86 190D Merc with only 392k
96 Volvo 850 Turbo wagon, 1 grainger valve and 250hp/280tq