How much primary boost with the precontrol at 100%?
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How much primary boost with the precontrol at 100%?
My car seems to build boost slower than it used to, particularly in primary mode. I thought it might be a problem with the precontrol system so I unplugged the vacuum line going to the precontrol solenoid. This should have the same effect as running the precontrol at 100% duty cycle.
In 3rd gear at 2000rpms I went WOT. Boost initially rose to .83kg/cm2 and maxed at .91 around 3500rpms on my blitz digital gauge, which generally reads about .04 higher than the PFC. Frankly I expected it to hit 1.00 without a problem.
Has anybody else tried running the primary without the wg solenoid? How much boost is the primary turbo capable of generating when the precontrol(primary wg) is not diverting exhaust flow?-.91 sounds a bit low.
In 3rd gear at 2000rpms I went WOT. Boost initially rose to .83kg/cm2 and maxed at .91 around 3500rpms on my blitz digital gauge, which generally reads about .04 higher than the PFC. Frankly I expected it to hit 1.00 without a problem.
Has anybody else tried running the primary without the wg solenoid? How much boost is the primary turbo capable of generating when the precontrol(primary wg) is not diverting exhaust flow?-.91 sounds a bit low.
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Even with turbos on their way out, when I had a split hose leading to the precontrol actuator I would overboost at the slightest provocation. It sounds like something may be off a bit.
I'm fighting a low primary boost problem right now that I'm reasonably certain is the CCV not closing properly, allowing primary boost to leak into the secondary chamber in the Y-pipe and thus out the CRV and possibly the secondary intake as well. My problem's a lot more drastic than yours, but if everything else checks out take a look at that...it could conceivably be open a crack.
jds
I'm fighting a low primary boost problem right now that I'm reasonably certain is the CCV not closing properly, allowing primary boost to leak into the secondary chamber in the Y-pipe and thus out the CRV and possibly the secondary intake as well. My problem's a lot more drastic than yours, but if everything else checks out take a look at that...it could conceivably be open a crack.
jds
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Originally posted by 93BlackFD
sounds like your turbo manifold is cracked on the secondary, causing it to leak into secondary turbo
make sense?
sounds like your turbo manifold is cracked on the secondary, causing it to leak into secondary turbo
make sense?
bureau_c
I'm fighting a low primary boost problem right now that I'm reasonably certain is the CCV not closing properly
I'm fighting a low primary boost problem right now that I'm reasonably certain is the CCV not closing properly
You mentioned your car overboosted when the line to the actuator was split. What kind of numbers did you see on the primary?
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Yes you did thank you very much. I think your ASCII art generated more traffic than my questions
Since I was running the stock ECU at the time I didn't let it play out to see where it ended, but I hit 12 psi a couple times before lifting. It wasn't an obvious split either until I removed the line and looked more closely.
jds
Since I was running the stock ECU at the time I didn't let it play out to see where it ended, but I hit 12 psi a couple times before lifting. It wasn't an obvious split either until I removed the line and looked more closely.
jds
#6
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Originally posted by CCarlisi
...... I'm going to replace all the IC pipe clamps this weekend. If the problem doesn't go away I'll remove the CCV acuator, wire the door shut, put the pfc in primary only mode, and do a few runs.
...... I'm going to replace all the IC pipe clamps this weekend. If the problem doesn't go away I'll remove the CCV acuator, wire the door shut, put the pfc in primary only mode, and do a few runs.
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I don't seem to be getting full secondary boost.
I'm getting around the same peak numbers at transition, but I really have to kill it to see them. Previously, with the same intake temps boost would rise to .9 and stay there until transition where it would bump to .95 and then drop to .9ish until redline. On cold days I'd hit 1.00 and 1.05+ at transition. Now with the same duty cycle settings I see around .83/.9/.85.
I'm getting around the same peak numbers at transition, but I really have to kill it to see them. Previously, with the same intake temps boost would rise to .9 and stay there until transition where it would bump to .95 and then drop to .9ish until redline. On cold days I'd hit 1.00 and 1.05+ at transition. Now with the same duty cycle settings I see around .83/.9/.85.
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