Originally Posted by shiv@vishnu

Are you getting limp mode right after WOT shifts near redline? If so, you catless system may be generating excessive boost pressure in the intercooler pipe once the throttle closes. We addressed this in the mapping with v2. Never really had to do with with v1 due to the reduced boost pressures it runs above 5500rpm. But it is conceivable that with no cats in the system, boost can go a bit unchecked. Try the o2 sensor cheats first. They WILL fix the 420 and 430 catalyst inefficiency codes you are getting. If the limp is still induced, we can modify a v1 map to address that. But I suspect we will get dps on our car before then and see for ourselves what is needed.

Shiv