blow off valve

[wassupjam]

i put an hks blow off valve on my 98 passat 1.8t and now it stalls when its cold and the rpms bounce and i feel a littel loss of power should i remove the stock one and how would i do that. i can use all the help i could get.
thank:drama:

[QuasarCav]

you have two blow of valves?

Doesn't the HKS bolt on to thew stock position, don't knwo much about FI but this seems strange.

[Boosted_TL]

Check your wastegate actuator, if it stays open that would cause what you are talking about except power loss.

And yes, what do you mean remove the stock one, you should have one or the other.

Im confused

:dunno:

[nismodrifter]

I am guessing that the only reason you changed it was for the Wh000sh sound :dunno:....

Your 1.8T vw will be using a diverter valve (DV) which will recirculate the air back into the system unlike an external venting BOV...and from what you've posted it sounds like you actually kept the stock DV on there and then also installed a BOV??? :dunno:

My recommendation: Get rid of the BOV now and leave your stock DV in...your car was designed to use a DV not a BOV, you CAN run a BOV but alot of people have problems (running rich etc..)
If you're wanting noise then maybe look at getting an intake...

[wassupjam]

i saw a passat with a bov and said it seemed to be fine

[nismodrifter]

Originally posted by wassupjam
i saw a passat with a bov and said it seemed to be fine
ok...so then fix your setup and see if it works...

[wassupjam]

the stock bov or what ever it is is on the exhaust side im not real sure what it is

[wassupjam]

is there a way i could cancle the stock diverter valve

[wassupjam]

on the intake tube coming from the turbo under the car and to the intercooler there is a littel round valve im guessing what would that be

[Boosted_TL]

Thats right

[wassupjam]

would that be the dv or the bov

[Boosted_TL]

Your stock ( DV ) one should be by your Air box if not in it, I dont know VW's

[EK 2.0]

Originally posted by wassupjam
would that be the dv or the bov


You ONLY have a Diverter Valve...if you put both a BOV AND a Diverter valve you are an idiot...


This is how it works ok??

Airbox-->Turbo-->Intercooler-->Diverter Valve-->Intake Manifold

If you do not know how the system works READ up on it, then start modding...

A Blow Off Valve releases the boosted air into the atmosphere

A Diverter Valve, does just THAT diverts the boost air elsewhere, in your case BACK into the intake stream of air...

Your ECU will have fuel to compensate for said boosted air and when you vent it, you are messing with the ECU and not making it happy, running rich for a second...

Just leave it all alone...pull the car into your garage and hit the net to read before you mess things up Bro...

[wassupjam]

that what im doing

[wassupjam]

im trying to get a much info as possible