Quote: (Originally Posted by Scuba_Vixen)
On 30m to 40m dives, I have to keep the IP down between 8 to 9 bar, or the PO2 climbs a bit. .... This is going to be an issue with significantly deeper dives that require a higher IP.
On deeper dive you will have other problems with a modified dolphins.
The shell and the original wing are not made to support the bailout bottles you will need. So you will need to fit a bigger wing and a support for the bailout bottles.
From my experience, for a depth of 60-70 m you can use the dolphin with the kiss without the need to change the wing and the shell. And with a IP of 9 you can quite safely dive to this depth.
Deeper it would be better to use a more solid unit or modify the shell and change the wings.