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Old 09-21-2018, 01:46 PM   #2576
Hyper
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Join Date: Feb 2002
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1999 WRB GM6
2.34 LR destroker

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only if you plan to swap springs around all day long
otherwise I see no point
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Old 09-21-2018, 08:13 PM   #2577
PDXREALTOR
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Join Date: May 2017
Location: PDX OREGON
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2017 STI

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Why would I need to swap springs all day?
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Old 09-22-2018, 01:43 AM   #2578
PDXREALTOR
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Quote:
Originally Posted by Bariga View Post
I used 3 port mac solenoid and 1 port turbo smart actuator. I had 3 springs totaling to 30 psi i believe, preload was probably 1 turn barely only. (dont use to much preload on the arm as that makes the arm travel distance shorter) My adjustable range was from 19-28 psi, and 0 psi drop at redline. WG Duty cycle map was a slope from 0 to 100
This.

By setting the EFR high boost canister to 14mm of preload boost is much snappier and spool is a tad quicker. Boost drop at redline is 1 psi less as well (33 PT 27 RL). The gate cracks at 19.5 psi, but .... at about 5k starts to climb because my gate is not opening all the way. With 14mm it 'overboosts' to 24 psi on spring pressure.

Having the can set at the directed 10mm gets me a crack open psi of ~ 17.5 psi, a lazier response, less psi at redline and a slower spool.

I'm also up 30+ torque but, I added 70/30 water/meth injection too. However there was no tuning changes after adding the meth/water so..... I'm not sure how much is the can and how much if any is the meth. I only took VD pulls after upping the pre-load.

My educated guess is it's likely a result of the higher preload more so than the meth because 1) I haven't tuned the meth/felt a loss of power with the meth, and 2) I felt the difference when I added 4mm which was done after the addition of the meth kit.

I have zero need for any spring pressure less than whatever is needed for pump gas emergencies.

I consistently see about -2 psi of spec spring pressure so I'll start with a 26 psi base and drop to 24 if I have to..... for pump gas sake.




I'm assuming you had to have had less than 30 psi of springs otherwise you'd not have gotten down to 19 psi .... plus.... TS doesn't show any spring combo above 26 psi.
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Old Yesterday, 04:21 PM   #2579
yamahaSHO
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Chapter/Region: RMIC
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2005 STi EFR 6758
04 S2000 EFR 7064

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Have you addressed WGDC with the higher preload?
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Old Yesterday, 04:23 PM   #2580
PDXREALTOR
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Quote:
Originally Posted by yamahaSHO View Post
Have you addressed WGDC with the higher preload?
I run hybrid. Otherwise I'd play with the 4 port
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Old Yesterday, 04:53 PM   #2581
yamahaSHO
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2005 STi EFR 6758
04 S2000 EFR 7064

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Gotcha. On both my 6758 on my STi and 7064 on my S2000, I run 7-8mm preload... Both with the BW supplied 3-port and TurboSmart 2-port actuator.

I was thinking for stepping it up to 10, but so far it's been pretty decent. 2mm certainly wasn't enough.
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Old Yesterday, 05:01 PM   #2582
PDXREALTOR
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Quote:
Originally Posted by yamahaSHO View Post
Gotcha. On both my 6758 on my STi and 7064 on my S2000, I run 7-8mm preload... Both with the BW supplied 3-port and TurboSmart 2-port actuator.

I was thinking for stepping it up to 10, but so far it's been pretty decent. 2mm certainly wasn't enough.
I have a road dyno of 14 12 and several 10 mm preload settings if you want to see them.

I wrapped my headers/up pipe last night and gained over 300 rpm of spool too .....
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