the best short rams (SRI
's) for the celica are the Injen
and rmm, you shouldn't have a problem if done correctly. sometimes it necessary to reset your ecu (unplug your negative battery terminal for about 5 or so minutes) to get the settings to readjust but that should be all.
also, off topic but worth talking about: if you buy either the Injen
or rmm SRI
's...look into buying the heatshields for them. they're dyno proven to give an extra horse or so which considerring the whole Intake
is only going to give you 2-3 whp it's worth it