Low 10`s On Full Boost

[The Toffinator]

As above my car is currently running a KS Rom ecu, TF035 Turbo with the usual supporting mods, A full ignition overhaul kit also

Car runs really well of boost hovers around 14.8 as it should, and gradually richens as you build boost, However if you go WOT It slams round to full rich, feels like its hesitating and throws black smoke out and flames obviously. Once it goes above 5.5 to 6k It leans off a bit to 10.3 10.4 or so and feels much better

Could a shitty map sensor cause something like this?

Ideally i think its the KS Rom making it run very rich, Or somethings giving it a duff reading.

Anybody else had similiar problems?

Thanks

[micky boy]

Have you checked for any code''s on the ecu? Even though there isnt any EML sometimes the ecu will still store a fault code

I've always said it was the KS-ROM at fault! but just check the ecu for any codes first to be sure there no sensors going down anywere