Can I use my LBE as a boost controller?????????
04-08-2003, 02:48 AM
#16
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The line into the KLR shouldn't be hard/brittle. Perhaps it has been heated at some point. I've noticed it's significantly harder around the manifold vs. inside the cabin (which is where I spliced it).
Since they're all coming from the same source I don't think there'd be a problem taking it from any of these sources.
I could see a very small difference (but believe it would be trivial) if volume is increased in the manifold to KLR line as the size/volume of the line is finite and it can only transmit at such a speed. Anything done that modifies the size/length/volume of the line will have an effect on the signal. However I believe the difference to be small enough to not cause a difference, I don't even think the KLR has the type of resolution to pick up on the difference as long as there are no significant changes or leaks.
Ahmet
Since they're all coming from the same source I don't think there'd be a problem taking it from any of these sources.
I could see a very small difference (but believe it would be trivial) if volume is increased in the manifold to KLR line as the size/volume of the line is finite and it can only transmit at such a speed. Anything done that modifies the size/length/volume of the line will have an effect on the signal. However I believe the difference to be small enough to not cause a difference, I don't even think the KLR has the type of resolution to pick up on the difference as long as there are no significant changes or leaks.
Ahmet
04-08-2003, 07:28 AM
#18
Race Director
No it will not. There's several topics going on here that are confusing people.
First, there's two banjo-bolts; one on the intercooler pipe and one on the intake-manifold. The big banjo-bolt on the intercooler-pipe will carry a different signal than the smaller banjo-bolt tapped into the intake-manifold.
Second, all of the devices hooked up to the smaller manifold soure such as the KLR, FPR/dampener, bypass-valve etc. are all dead-end devices. There's no actually flow going to these devices and all the data that is sent is through a compression wave, like sound and ocean waves; there's actually very, very little flow of materials.
Ok, back to hooking up an LBE to a dual-port wastegate; it can only work in single-port mode. Dual-port wastegates operate on a pressure-differential just like single-port. However, your controller is managing the low-pressure side instead of the high-pressure side. That means in order to open the wastegate, your boost-controller has to subtract pressure from the boost-line in order to open the wastegate (to create pressure-differential in wastegate diaphragm). Only the ****-type of pressure-regulator controller can do this.
The check-valve type of controller can only add pressure as boost increases. These are units like the Halman, Anderson, LBE, ReliaBoost, etc. So to use your wastegate with the LBE, use it in single-port mode.
Some background on boost-controller and wastegate interactions here: <a href="http://forums.rennlist.com/cgi-bin/rennforums/ultimatebb.cgi?ubb=get_topic&f=15&t=010253" target="_blank">LBE intalled, getting weird readings </a>
BTW, there's no difference in the activity or performance between the same wastegate operated in single-port or dual-port mode. I can show you with finite-state diagrams why this is so. The best performance feature in an aftermarket or stock wastegate is the spring. Having a strong spring will make a huge difference in how quickly boost builds and how long it holds boost in the upper-RPMs (compared to stock wastegate).
First, there's two banjo-bolts; one on the intercooler pipe and one on the intake-manifold. The big banjo-bolt on the intercooler-pipe will carry a different signal than the smaller banjo-bolt tapped into the intake-manifold.
Second, all of the devices hooked up to the smaller manifold soure such as the KLR, FPR/dampener, bypass-valve etc. are all dead-end devices. There's no actually flow going to these devices and all the data that is sent is through a compression wave, like sound and ocean waves; there's actually very, very little flow of materials.
Ok, back to hooking up an LBE to a dual-port wastegate; it can only work in single-port mode. Dual-port wastegates operate on a pressure-differential just like single-port. However, your controller is managing the low-pressure side instead of the high-pressure side. That means in order to open the wastegate, your boost-controller has to subtract pressure from the boost-line in order to open the wastegate (to create pressure-differential in wastegate diaphragm). Only the ****-type of pressure-regulator controller can do this.
The check-valve type of controller can only add pressure as boost increases. These are units like the Halman, Anderson, LBE, ReliaBoost, etc. So to use your wastegate with the LBE, use it in single-port mode.
Some background on boost-controller and wastegate interactions here: <a href="http://forums.rennlist.com/cgi-bin/rennforums/ultimatebb.cgi?ubb=get_topic&f=15&t=010253" target="_blank">LBE intalled, getting weird readings </a>
BTW, there's no difference in the activity or performance between the same wastegate operated in single-port or dual-port mode. I can show you with finite-state diagrams why this is so. The best performance feature in an aftermarket or stock wastegate is the spring. Having a strong spring will make a huge difference in how quickly boost builds and how long it holds boost in the upper-RPMs (compared to stock wastegate).
04-08-2003, 09:04 AM
#19
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Danno that's an offer I can't refuse. Please explain further. Are you saying for example if we took the lindsey wastegate which is available in single and dual port configurations (the flow part of the wastegate and valve dimensions are identical) there would be no diference in performance.
