Originally Posted by EMS
I don't know which turbo you are talking about, but the HTA68 is completely maxed out at around 22 PSI @ 7000 RPM on a EJ205. This is the unported version with a lot of increase from the wastegate duty to avoid boost taper. 30 PSI midrange is no problem though.
I was talking about the 68hta, but I should have mentioned, on E85. On pump your right, I'm shocked when people can get over 20psi out of it. But on E85 or race gas,you can really bump the boost up. No vf I've ever seen can run that high.
I was holding 29psi to 6500rpm, then dropping to 28 at 8k redline.