Dip in HP/TQ on my Dyno (X50 w/ GIAC/Evo)
Originally Posted by nash
I remember that on the dyno it hit 1.3 and then dialed back to 1.1 quickly. I will drive it some tonight to test.
if u set it right it should just stay 1.2 bars. Ideally u want 1.25 bars steady.
with the upgraded actuators it should drop liek that form 1.3 to 1.1 bars...
thats why u have upgraded actuators... so it keeps the boost where u want it.
Also, what fuel were u running?
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL
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Registered User
Joined: May 2004
Posts: 252
From: Frisco, TX
Rep Power: 33
93 octane, texaco.
Yeah, I think you are right - the drop in boost from 1.3 to 1.1 would explain the dip in the graph. I'll try to replicate it on the street tonight and then see if I can get the actuators adjusted in the next day or two.
Yeah, I think you are right - the drop in boost from 1.3 to 1.1 would explain the dip in the graph. I'll try to replicate it on the street tonight and then see if I can get the actuators adjusted in the next day or two.
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Joined: Jul 2004
Posts: 144
From: Sunnyville
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Originally Posted by x50plt
I just changed mine out (wastgates) and they should be set with a pressure tester. very easy to do. low pressure regulator and a good low pressure guage 0-15 or 0-20 psi they must be done on the turbos. at 12 psi they should begun to crack open adjust them evenly.
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Joined: Aug 2003
Posts: 3,787
From: Edmonton, Alberta
Rep Power: 209
You will know TB shut down on the street when it happens. I had that situation when my car was a GT640. Top of 4th @ 1.3+ bar and WHAM! The braking effect of the TB shut down throws you hard against the chest strap of your seat belt. Hit it 2-3 times and it will go into limp mode. I believe Mark is correct - although I believe you should dail your nuts back more than 1/2 turn. I'd loosen your nuts 1.5 - 2.0 full turns and test there. Move up in 1/2 turn increments to bring back the boost. Good Luck.
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Joined: May 2004
Posts: 1,035
From: Lo Barnechea & Viņa del Mar
Rep Power: 66
Originally Posted by ari
Pull off the boost hoses, connect a pump, and start pumping at 12 PSI you should see the rod start to move. If it doesn't, loosen it until it does.
Rinse and repeat.
Rinse and repeat.
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