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12-03-2009, 12:14 AM
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#11
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Member
Join Date: Feb 2009
Posts: 42
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__________________
2005 WRX Wagon
Engine
- APS SR-30 Turbo
- Titek Bellmouth catted downpipe
- Borla Catback
- Boost Cooler Methanol Injection with VCS-25 controller
- GM Boost control solenoid
- Open Source tuned
Chassis
-Perrin Anti-lift kit
-22mm SPT rear swaybar
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12-03-2009, 12:17 AM
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#12
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Member
Join Date: Nov 2009
Posts: 67
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Quote:
Originally Posted by axotlprogeny
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From what I have seen this is actually a pretty good product to install on the srt-4. The car is notorious for boost loss and this solves it.
__________________
2000 silverstone honda s2000
HP= 240
Torque= Honda is still figuring out how to make this
1/4 mile= i dont know i was autocrossing through the cones that divided the two lanes
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12-03-2009, 12:42 AM
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#13
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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I have a MBC Ill let go for cheap. I forget what kind it is, but it was on my buddies old Evo8.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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12-03-2009, 12:57 AM
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#14
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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That kind of doesn't make sense to me. If the wastegate doesn't want to hold 14lbs of boost, it's not going to hold 14lbs regardless of the rpm right?
I thought the reason srts dropped in boost at high rpm was because the turbo couldn't keep up with the engine's breathing demands??? (Meaning, above 5K the engine wants to suck more air than the turbo can deliver creating 14lbs of backpressure.)
__________________
I <3 forced induction.
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12-03-2009, 12:58 AM
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#15
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Damian, for my car I'd buy it off you, but for a Christmas present it needs to be grease free and wrapped in new plastic. Thanks though.
__________________
I <3 forced induction.
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12-03-2009, 01:19 AM
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#16
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Member
Join Date: Feb 2009
Posts: 42
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From what I understand, it starts opening at 4psi, and the ECU tries to control boost by bleeding pressure away from the wastegate. The problem with a bleed type boost control is that even at maximum boost control solenoid duty cycle (bleeding as much boost pressure away from the wastegate as possible) you are still limited by the maximum that the wastegate spring can accept.
At high RPM, the bleed system cannot keep up with a full spooled turbo pushing pressure into the boost control system, and the pressure ultimately shows up at the wastegate actuator spring as the 4 PSI of pressure needed to open the wastegate.
__________________
2005 WRX Wagon
Engine
- APS SR-30 Turbo
- Titek Bellmouth catted downpipe
- Borla Catback
- Boost Cooler Methanol Injection with VCS-25 controller
- GM Boost control solenoid
- Open Source tuned
Chassis
-Perrin Anti-lift kit
-22mm SPT rear swaybar
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12-03-2009, 02:56 AM
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#17
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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Quote:
Originally Posted by enkeivette
Damian, for my car I'd buy it off you, but for a Christmas present it needs to be grease free and wrapped in new plastic. Thanks though.
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Understandable. I got it cause I was going to go TT on my Eclipse, well kid came along and changed that plan.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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12-03-2009, 11:38 AM
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#18
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Senior Member
Join Date: Apr 2008
Posts: 1,557
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Quote:
Originally Posted by enkeivette
Otherwise, intake it is. I've also been thinking about replacing the resonators with straight pipe. Not sure if it would smog though. kdracer73?
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Any changes before cat are a no-no as far as smog rules go.Damn tree huggers 
__________________
I drive a hybrid, It burns gas and rubber..
Alcohol Tobacco & Firearms should be a convenience store, not a government agency.
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12-03-2009, 12:50 PM
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#19
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Quote:
Originally Posted by kdracer73
Any changes before cat are a no-no as far as smog rules go.Damn tree huggers |
The resonator is after the cat I'm pretty sure. There's no muffler from the factory on this car. Just downpipe/ flexpipe, then cat, then resonator, then y pipe out to the chrome tips.
So still a no go if I replaced it?
__________________
I <3 forced induction.
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12-03-2009, 01:14 PM
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#20
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Senior Member
Join Date: Apr 2008
Posts: 1,557
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After cat wont matter 
__________________
I drive a hybrid, It burns gas and rubber..
Alcohol Tobacco & Firearms should be a convenience store, not a government agency.
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