honda9369

what is the purpose of a check valve? the reason i asked is i saw something on d16turbo.com and the guy said if u have a 99-00 ex u should have a check valve. if i dont have one could that cause the car to run shitty?

eg6T

check valve is used when you are using the stock ecu with turbo,so your map sensor does not "see" the boost.yes if you dont have a check valve or missing link your car will run shitty

honda9369

i no i dont need the miss link. im using the afc and i never installed a check vale with the kit. do i need to? plus u no that vac tube that usauly goes to to intake, i have it on the charge pipe. is that right?

honda9369

this vaccum tube im talkin about i dont see on the older ex. just 99-oo

eg6T

check valve= missing link..missing link is better than those aquarium like ones...if you are usin an afc you still need a check valve if your ecu is stock.your ecu is seeing the boost which it should not.and the tube you are talking about is it coming from the valve cover?

honda9369

no its not that one. if i disconnect a vac hose from the im and blow thruogh the tube im talkin about. air will come out od the im where i disconnected the vac tube

honda9369

when it was stock it was connected to the intake

eg6T

from what it sounds i dont think it should be there..got a pic?

honda9369

yea i believe i should put it to the intake. but what about the check valve. im told that i dont need a miss link. so where do i get a check valve.

eg6T

missing link is the same thing as a check valve,only the missing link is better,search missing link

crispydee

If you have larger injectors and are running the hack, provided you dont get a CEL when at full boost you dont need a check valve or missing link. Because the afc drops the voltage from the map to lean off the mixture (ecu wont see boost).

White Smoke

-If you are using the acf hooked up in the "HACK" setup then you don’t need a check valve. You will have to have larger injectors for this to work!
-If you have an FMU like the vortec unit than you NEED a check valve weather it be a missing link or one made from pieces at lowes. An afc can still be hooked up but not in the "HACK" configuration.

I only know of 1 hose off the intake and that goes to the VC, it needs to have a little filter installed on it at the LEAST. DO NOT HOOK IT FROM VC TO CHARGE PIPE!!
There is also an IntakeAirTemp sensor on the intake pipe that alot of people just leave hanging, what did you do with that?

honda9369

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by si2die4 &raquo;</TD></TR><TR><TD CLASS="quote">-If you are using the acf hooked up in the "HACK" setup then you don’t need a check valve. You will have to have larger injectors for this to work!
-If you have an FMU like the vortec unit than you NEED a check valve weather it be a missing link or one made from pieces at lowes. An afc can still be hooked up but not in the "HACK" configuration.

I only know of 1 hose off the intake and that goes to the VC, it needs to have a little filter installed on it at the LEAST. DO NOT HOOK IT FROM VC TO CHARGE PIPE!!
There is also an IntakeAirTemp sensor on the intake pipe that alot of people just leave hanging, what did you do with that?</TD></TR></TABLE>
its not the tube that goes to the vc. its only on the 99-00. my fiance has the same car but its a 98 and she doest have it. and yes the iat is hooked up.