Well recently I've been having some stalling issues after a boosted run. Car will run perfect until the run...after that it wont stay in idle. I dont know what it can be but I've seen that the Tial BOV wont open when I rev the engine (without a load) unlike the videos posted on Tialsport.com. Thinking that maybe its getting stuck open after a hard run. I checked the vacuum source and it seems to be working perfect with a strong vacuum.

BTW, tried to email Tial, and all email accounts returned undeliverable.

 

clean it?

 

I did. No change.

 

my first rec would be to clean/possibly lube it but it may need new spring

 

Ok i just lubed it. Has the "raw" colored spring. That sucker is extremely strong. I couldnt contact Tial to verify spring with the 280 cams.

 

with 280 cams you probably need the -6 or -8psi spring...did you recently do the cams?

 

What spring is in there? I was gonna say maybe the spring is too stiff....I have an 8psi spring for sale if you are interested...

 

It has the raw color spring. Cams were changed last year. Same time with this BOV.

 

You need to find out how much vacuum the car pulls at idle, and choose the correct springs based upon that. The engine vacuum is what pulls the valve open. Are you using the original 50mm or the newer Q?

 

Original. BOV is about a year old.

 

hmmm.. spring might be two tight, or it could be the ur not running rec bov if your still on the stock ECU

 

Hes on AEM...

 

Ok. Well, the unpainted spring is for around -20 in/Hg. I doubt you are pulling that much vacuum at idle with 280 cams.

Tial 50mm Spring Chart

 

YEs, Im on AEM...also I dont have an aftermarket boost gauge with vacuum. But reading the OEM metric it says 25cm/hg.

 

Well, assuming the conversion is the same as if you were doing a length measurement, that should be about -10 in/Hg.

BTW - You can hook up a laptop to the AEM and use AEMPro to actually see what your MAP sensor is reading @ idle.