IIRC - LSA enjoys a similar dual-mode (so-to-speak) fuel system, similar to LS9 because the obvious fuel requirements of the SC. We know they're upgraded above LS3-specs', but something that seems new to 'V LSAs, is it seems, perhaps, the injectors may have been changed.
In a current article in
GMHTP, ADM was adding their Stage I 'V-upgrade (along with the customer's air cleaner upgrades) and in the final tuning, Andy noted that he was expecting the injectors to reach their repsective limits, as I suppose they have on earlier V' mods', but this brand new 2012 V' didn't seem to approach the current car's limits.
The car ended up around 590 RWHP, and it seems like Andy, perhaps, though there may be unannouced '12 changes for LSA, and at least in the Caddy', it seems there's a chance that either they had a ringer for this article, or LSA-V's might be making a little more power (perhaps because ZL1 changes might carry over to V', somewhat).
Anyways - unless you are seriously increasing fuel requirements (i.e. adding a top-end kit or more boost), adding fuel may not necessarily be worth the expense, especially if you don't intend on any of the above. I guess we're just going to have to wait :(
