Tune lexus/ greddy seprate or together??

[Koenigturbo]

I have the Lexus/550 mod along with a A.F.P.R. and Walbro fuel pump. I was wondering if I should tune the Lexus/ 550 mod first, then add the Greddy Ultimate and then retune it. Or should I tune everything all at once. I thinking it would be better to tune the Lexus mod first, then that way I would have that portion of it tune then go on to tune the Greddy Ultimate to eliminate conflicting problems between the two.
I'm asking is because, I know you can tune the Lexus mod by it self, so I figure I get that sqaured away first, then do the Greddy. My goal is 400ish H.P. and no, I don't have to have 400 h.p., just what ever this set up will get me, Safely. I have a 57 trim ct/26 along with 3 inch exhaust and boost controller.
Thank you!!
Supra Newbie

 

[toyotanos]

If you plan on doing it, do it all at once. Dyno tuning can rack up a hefty bill quickly, so get it all in then tune it. (unless you're rollin in the dough, in which case why haven't you sent me any yet?)

 

[Cz.]

I'm not sure what "tuning" you do with the lexus afm, but you should definetely do that first before you do real tuning with a fuel computer. If you change anything after the tuning is done, you'll just mess up the fuel map.