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The car just doesn't seem as sweet as it was when I first got the speedtuning tune. I used to spike to 20/21 psi then back off to around 18... but now I'm seeing max 18 then at around 3500/4000 rpm I would see the boost quickly fall to almost 12 psi. I've replaced the tcv with a brand new stock s60r one and it felt alittle better at the time but in retrospect it was probably my mind just playin tricks. cbv? wastegate? comepletely new turbo? keep in mind I have 165k miles on my turbo and components(except for brand new tcv). should I give my wastegate rod a good half turn... maybe 1 full turn? would that help me hold boost?
 

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Re: boost backing off by almost 9psi?!?! (fightinchunk)

WG wont help increase peak boost, it just increases the base levels. But yes, it would make the car feel younger.<p>I'd replace all the rubber hoses off your TCV too. 18psi to 12 is.... hmmm.
 

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Re: boost backing off by almost 9psi?!?! (imageomega)

+1<p>I'd start with new hoses all around. And if the TCV had been on for more than 30k, try a new one.
 
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