Changing Turbo Exhaust Housings?

[Devils_Advocate21]

Simple question after simple answer, Im planing to change the exhaust housing on my turbo in the next couple of weeks when it arrives, from a 0.68A/R to a 0.87 A/R on my gt3037 ProS, Do i need a retune for that exhaust housing change, or can i get away from it for a little while?

Cheers Guys

[Adriano]

Should be fine for a while, you should be able to add a bit of timing, although it will lean it out a bit due to the improved pumping efficiency. Just dont go giving it too much stick

[munro'sgts-t]

you could probly get away with it for a little while but i would be getting it tuned asap better safe than sorry it beats blowing up your motor because u didnt get it tuned. not saying its gunna happen but worse case cenario you no what i mean

[skylinecouple]

Simple answer.YES.Your human aren`t you ? So you know you will need to see how the new size goes,won`t you? you know you will.More air out means more air in(theoretically). It should be ok as the air flow meter will do it`s job,but what if?