Check valves = boost leak?
02-09-2004, 08:46 PM
#23
1.0 BAR
Join Date: Nov 2003
Posts: 452
Re:Check valves = boost leak?
damnit!!!! in thinkin bout maybe crimping down the line goin to the map a lil so not as much boost can get to it/ecsape with the check valves... not that its really hurting performance, but i dont wanna lose even 1 cfm if poss. hmm...
02-09-2004, 10:06 PM
#24
0.0 BAR
Join Date: Sep 2003
Posts: 46
Re:Check valves = boost leak?
i dont see how you would be loosing boost with a check valve. its a one way valve (as mentioned) that only bleeds positive air pressure, NOT vacuum. if the check valve was placed right before the map sensor (most times you need more than one) you shouldnt be loosing any pressure going into the Throttle body. all thats doing is just stopping the map from reading positive air pressure, if your map is still seeing boost with a check valve, you either hooked it up wrong or its faulty. im not sure what kind of check valves your using, but i've personally found that fish tank valves work the best.
02-09-2004, 10:26 PM
#25
Banned
Join Date: Aug 2003
Posts: 2,898
Re:Check valves = boost leak?
Originally Posted by illusionsir
i dont see how you would be loosing boost with a check valve. its a one way valve (as mentioned) that only bleeds positive air pressure, NOT vacuum. if the check valve was placed right before the map sensor (most times you need more than one) you shouldnt be loosing any pressure going into the Throttle body. all thats doing is just stopping the map from reading positive air pressure, if your map is still seeing boost with a check valve, you either hooked it up wrong or its faulty. im not sure what kind of check valves your using, but i've personally found that fish tank valves work the best.
02-10-2004, 02:23 AM
#26
1.0 BAR
Join Date: Mar 2003
Posts: 202
Re:Check valves = boost leak?
i've tried the method shown in that picture and it doesn't work ('99 corolla stock map sensor). it'll idle for about 30sec and die on it's own. if you give it any gas it'll also die. used in a config. where they actually just bleed boost, it works but YES you're bleeding a little bit of boost so you might get a bit of lag.
02-10-2004, 01:44 PM
#27
1.0 BAR
Join Date: Nov 2003
Posts: 452
Re:Check valves = boost leak?
Originally Posted by illusionsir
i dont see how you would be loosing boost with a check valve. its a one way valve (as mentioned) that only bleeds positive air pressure, NOT vacuum. if the check valve was placed right before the map sensor (most times you need more than one) you shouldnt be loosing any pressure going into the Throttle body. all thats doing is just stopping the map from reading positive air pressure, if your map is still seeing boost with a check valve, you either hooked it up wrong or its faulty. im not sure what kind of check valves your using, but i've personally found that fish tank valves work the best.
02-10-2004, 05:32 PM
#28
0.0 BAR
Join Date: Sep 2003
Posts: 46
Re:Check valves = boost leak?
Originally Posted by -Turbo Z24 Guy-
Originally Posted by illusionsir
i dont see how you would be loosing boost with a check valve. its a one way valve (as mentioned) that only bleeds positive air pressure, NOT vacuum. if the check valve was placed right before the map sensor (most times you need more than one) you shouldnt be loosing any pressure going into the Throttle body. all thats doing is just stopping the map from reading positive air pressure, if your map is still seeing boost with a check valve, you either hooked it up wrong or its faulty. im not sure what kind of check valves your using, but i've personally found that fish tank valves work the best.
