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03-05-2018, 01:00 PM
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#1 |
       
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Boost drop
Ok so I'm hitting 21lbs at 4500rpm but it drops to 19lbs towards redline. What can I do to keep it steady at 21lbs?
Running twin 62/60 84ar turbos with twin turbosmart 45mm hypergates. Gates and turbos are hood dumped. Using the G Force II boost controller.
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MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs.
 https://www.instagram.com/whoopa_ss/ |
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03-05-2018, 01:44 PM
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#2 |
   Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
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stronger wastegate springs? that's all i can think of unless you've got a boost leak somewhere else.
where are you getting your signal for the controller?
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2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
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03-05-2018, 02:45 PM
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#3 | |
 Drives: '10 Camaro 2SS Join Date: Jul 2013
Location: Charlotte, NC
Posts: 428
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03-05-2018, 03:17 PM
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#4 |
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Drives: 2011 Camaro 2SS Join Date: Sep 2015
Location: Houston
Posts: 410
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Could be it's spiking to 21 psi and leveling back out to 19 psi
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03-06-2018, 11:18 PM
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#5 |
Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,069
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you can have issues trying to run double wastegate spring pressures with an ebc. what's your base spring pressure?
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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03-07-2018, 03:34 PM
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#6 | |
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Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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Quote:
http://gfb.com.au/products/boost-con...troller-detail Is it installed and configured correctly to make use of this ? And as others have said....do you have a graph of boost vs rpm ? in that is the 21psi momentary or does it hold it for a while before dropping ? Can you see what changes in duty the controller is applying to the solenoid to try and maintain boost, if any at all ? 2psi is a small drop and should be easily corrected unless there are some mechanical limitations |
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03-08-2018, 02:14 PM
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#7 |
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After I messed with the tune a little it seems to of been corrected. The car was super fat. Pulled 8% fuel out and it don't spike 21lbs and drop off. It comes in smoother and peaks at like 22 now.
__________________
MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs.
https://www.instagram.com/whoopa_ss/ |
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03-10-2018, 11:02 AM
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#8 | ||
Drives: 2013 Camaro SS Turbo Join Date: Apr 2014
Location: South Florida
Posts: 1,525
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Quote:
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03-10-2018, 11:52 AM
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#9 |
Drives: 2019 ZL1 1LE A10 Join Date: Jan 2015
Location: The ATX
Posts: 966
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That’s actually kinda expected...
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Ryker #29
2019 ZL1 1LE A10 2015 Z/28 #809  |
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