What are you coolant temps running now?

 

no idea but its no where near as hot and the rad is double the size

 

You are using a Greddy BOV do you have both springs still in?

 

i was gonna ask u about that, i dont know what u are talking about, thought there was only one spring in it. whats the deal with this

 

i know the type s has two springs but not sure bout the rs but the s has two springs in it and ur supposed to open it up and remove i belive the smaller spring cause it would be too stiff and im surprised youve gone this long with the bov like that and heres an article bout the s one
http://www.evomoto.com/tech_articles...h_article_id=7

 

The rs is suppose to have 2 springs also well at least mine did Did some more digging and this is what i found. https://www.evolutionm.net/forums/la...-question.html Hope it help's

 

wow i didnt know i had to do this, but thanks ill change it now and see what happens

 

Now you know, and knowing is half the battle...

 

Just let us know if it fix's the complaint. hope it does :P

 

so i changed it but only now did i realized that i dont think i noticed any jerking in the car lol, too busy paying attention to the new noise hahahahah

makes more of a longer, gentle pshhhhhhh instead of quick psh and when i build boost for like a sec and let go it makes a psh noise instead of like whatever the other noise is, cant type that sound lol

 

big difference!!! i can go into boost much easier and lighter on the gas pedal....i love it!!!

 

So i take it that fixed it :P

 

The noise you were hearing before was a fluttering sound right? Thats called backspin/compressor surge. Not good for the turbo, so its good you fixed it now.

When the BOV's actuator is too tight, it doesnt fully open during shifts, therefore a lot of the pressurized air that gets sent back down the intercooler pipes when the throttle plate closes doesnt escape out of the BOV, and hits the turbo's compressor blades causing them to try to spin in the opposite direction. The fluttering noise is the compressor wheel inside the turbo trying to spin in the opposite direction. This causes stutters and longer spool time once you start accelerating again because the turbo has to respool from start.

You'll have to do some fine tuning of the spring pressure to get it right. The screw on the top of the BOV is for adjusting the spring tension. You want to tighten it to the point of hearing that flutter, then loosen it a little bit until you dont hear it anymore. If the spring is too loose, the turbo will work harder trying to compensate for the boost pressure you're leaking out of the BOV because the spring is not fully keeping the BOV closed during boost. Too tight and you wont vent enough of the pressure during shifts and you'll get compressor surge

 

nice explanation and yes it was a fluttering noise exactly......well now i have it tightened 3 turns right and it seems that 5 pounds before boost i can hear it hissing so i guess its too loose?

 

most likely. Like i said, turn the dial tighter until you get compressor surge again, then back it off a little until it stops. That should be the sweet spot