Intake air Restrictor
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From: Huntsville, AL
Originally Posted by SRap1,Sep 30 2010, 02:29 PM
i can try the bypass vave idea as well, since i have a dual BOV setup, i can use one for a wastegate, prolly a cheap one from ebay just to test it out.
Wastegates open based on the differential force between
two pressure areas ( aka force) driving the valve open
….lower pressure line ( boost line) and exhaust pressure pushing up on the valve
one static force.. the spring
and one pressure line if equipped for boost control to the top port on the wastegate
Like I said it would work but is going to take some messing with it.
What you need is a poppet style valve ( similar to a BOV) but specifically design to open at a set crack pressure and has sufficient flow/lift to regulate the downstream pressure by allowing sufficient mass flow to escape back to ambient.
Just like a spring based check valve but much larger.
Greddy did have something like this specifically for turbo owners ( for over boost conditions/failure modes) but have not seen it on there site for some time.
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yeah im just gonna stick with the restrictor valve idea
S2000junky: i dont expect huge psi increases way down low, just more than what 6psi would give and since i have a fmic, and its going to be cold soon i think i will be ok for IAT, i need to get a IAT gauge but cant find a good affordable one
S2000junky: i dont expect huge psi increases way down low, just more than what 6psi would give and since i have a fmic, and its going to be cold soon i think i will be ok for IAT, i need to get a IAT gauge but cant find a good affordable one
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How much boost are you seeing and with what pulley@RPM's with your FMIC?! What setup do you have on your FMIC?! i.e. piping size, piping route, intercooler size etc?!?
Since you are already loosing boost from the fmic, maybe its worth going to a 3.4" pulley if you have an AP1. That will net you ~7psi
Since you are already loosing boost from the fmic, maybe its worth going to a 3.4" pulley if you have an AP1. That will net you ~7psi
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heres my thread for it, you actually posted in it a few times
https://www.s2ki.com/forums/index.php?showt...&#entry18754984
https://www.s2ki.com/forums/index.php?showt...&#entry18754984
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From: FAR BEYOND THE WHEEL...
Originally Posted by Deception,Oct 1 2010, 09:57 AM
I just happen to have a tial 38mm wg & greddy BOV in my garage.. will check when I get home for you
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ok thanks for the help.
i have ordered some 2.5 piping to make my supercharger intake, that will be routed down to the front bumper like N/A cold air's: to offset the higher IAT's, and help to choke the cfm's. Who knows just the smaller diameter piping might choke it enough to not need the restrictor plate.
all i need know is a 3.2 pulley.... i was going to run the 3.0 but i dont want to overspin the charger and create even more excessive heat than i already am.
i have ordered some 2.5 piping to make my supercharger intake, that will be routed down to the front bumper like N/A cold air's: to offset the higher IAT's, and help to choke the cfm's. Who knows just the smaller diameter piping might choke it enough to not need the restrictor plate.
all i need know is a 3.2 pulley.... i was going to run the 3.0 but i dont want to overspin the charger and create even more excessive heat than i already am.
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From: South Florida
you can monitor iats thru obd2 port or standalone.
i dont know how many ways we can say this is a bad idea with stock injectors, rising rate fmu, and no way to really tune fuel/timing.
use the money on injectors and stand alone. then this project will be worthwhile. right now, you are playing with fire.
i dont know how many ways we can say this is a bad idea with stock injectors, rising rate fmu, and no way to really tune fuel/timing.
use the money on injectors and stand alone. then this project will be worthwhile. right now, you are playing with fire.
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Originally Posted by s2000Junky,Oct 2 2010, 08:24 AM
Let me further explain, for example... I'm making 9psi at 9k rpm. Which gets me aprox 4psi at 5k rpm due to how boost builds with the centrifugal. With a pulley size targeting 13psi at 9k rpm, you will see aprox 7psi at 5krpm which will cause severe detonation and destroy your motor. You are now in the range of seeing turbo boost numbers at low rpm, you would never run a turbo without some from of management to retard timing. This is what I am trying to explain to you. This coming from a guy who went the very same direction you are looking with pushing the kit with no management, so take it with some validity. I've played trial and error with this set up.
Just running a 3.6 netting 10psi at 9k rpm was too much boost at low rpm and I was getting pre vtec detonation... so I dropped down a psi to where I am now. I'm just trying to give you some insight with someone that's pushed the limits so you can take every angle in account, don't want you to destroy your motor.
Just running a 3.6 netting 10psi at 9k rpm was too much boost at low rpm and I was getting pre vtec detonation... so I dropped down a psi to where I am now. I'm just trying to give you some insight with someone that's pushed the limits so you can take every angle in account, don't want you to destroy your motor.
well since i ordered the damn piping already, do you think it will hurt my power to run a small 2.5 intake to the bumper at 290hp? 6psi, this is just to get colder air, basically i bought a 3.5-2.5 bending reducer and the appropriate bends to route to the front bumber.
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Originally Posted by SRap1,Oct 2 2010, 06:19 AM
heres my thread for it, you actually posted in it a few times
https://www.s2ki.com/forums/index.php?showt...&#entry18754984
https://www.s2ki.com/forums/index.php?showt...&#entry18754984
My mind is playing tricks on me!