Wastegate Question...

[brane_97talon]

Ok I have a question. In my turbo setup (see pic) I have the top port on my wastegate plugged. From my understanding it it supposed to be open in order to vent properly. With it being plugged, will it act as a sort of "boost controller" since the air trapped inside would have to be compressed, requiring additional PSI? Just curious.... and are there any PROS or CONS to this setup?

http://www.dsmtuners.com/gallery/showimage.php?i=108344

 

[Bluefire16]

In all honesty i am not totally positive, but from my knowledge you should be keeping it open. It shouldnt allow more boost than the spring is set to. I would assume you have a MBC, and unless you have serious engine work, you shouldnt be pushing more than 8-9 psi. The wastegate will release the air at a given and desired PSI, and which it has a max. It is not designed to work as a controller.

What "set-up" are you referring to? Keeping a wastegate plugged or unplugged is not really a set up.

 

[slowboy101]

Its as simple as this, its bad open it.

 

[brane_97talon]

ok well i have a MBC but it is not installed. My question wasnt really answered however, SLOWBOY why exactly is it bad?
and bluefire, i realize how wastegates function , i just wanted to know what effect, if any, this would have on my "boosting ability".

also i have a 6lbs spring but boost tops out at 8lbs, so i was thinking that this can be the cause...in case you guys were wondering why i am asking. Not trying to be a jerk.

 

[XiKeiyaZI]

Unplug it. In all honesty, I don't remember what it's for... what I do recall is that I had a friend who turbo'd his 420a (he screwed up so many things) but the car wouldn't boost properly with that port plugged. Take it off and give it a shot.

 

[99gst_racer]

The top port of the wastegate must reference the atmospheric pressure that is entering the compressor inlet - so you want to leave it open and unplugged. If you plug it, you will overboost to some extent and will not have control over the wastegates ability to function.

 

[GRAVEDIGGER]

It should not be capped. Leave it open to atmosphere. I'm not sure what symptoms it would cause having it capped off, but I do know it should be left open for how you are using it. It will not work correctly like that so uncap it and forget about it.

 

[brane_97talon]

Alrighty thanx guys. I will unplug it. Right now one more thing...I never HEAR my turbo spool anymore. It just hits between 3.5-4k. I used to hear it, now i cant. Any suggestions? (not that its a big deal, just a sweet sound....)