i have an 82 celica supra w/ a 88 7mgte. i am currently trying to decide on which piggy back to use. the greddy e-manage ultimate or the maf-t pro. my question is has anybody had any exp. on woriking w/both units and what kind of concerns they had. the turbo has been upgraded to a 57 trim, head has been ported and polished, upgrade throttle body, lc-1 innovative wideband and hks boost controller.