Is there a way to get more boost on a 07 s60 2.5t without a pcm flash?

 

No you need an ECU tune.

A Manual Boost Contoller (MBC) wont work as your running ME7 and ME7 doesn't like that.

If you want more boost get an ECU upgrade.

 

You can get a PPC, that way you can keep the factory ECU.

https://volvoforums.com/m_96758/tm.htm

 

Which is still an ECU upgrade. However it allows you to revert back to stock when need be and then back to the upgrade when need be.

 

Oh, I see you and I are playing "I get the last word" again.

Since you post was somewhat ambiguous, and bretm asked a somewhat similar question in another topic, I figured he and otherswere intelligent enough to click the link in my previous post, click the link in that post, and infer this was still an ECU upgrade. I sincerely apologize and will be more clear in the future who I am replying to.

 

It's a love hate with S70driver....I've learned to let him do his thing and I usually only chime in when its s40 related