yea it depends on boost. if ur at low levels id say it doesnt matter. but if ur running higher boost then it'd be better to let it out. too hot.SpanishRicer said:External wastegate...various sizes and spring types are available for different boost levels.
You'd probably see a pretty nice power gain running open over closed while boosting 15+ PSI. Check to see if you've got a dump tube running from your manifold/wastegate. If you see one, then you're already running open atmosphere...rev 2 10k said:yeah i'm running 15 lbs...should i be letting it out? im not even sure if it is already letting it out.