turbo and chip??

I have heard not to get a chip when going FI, but my fuel cutofff is at 6600 now cuz im running LX electronics. but I have a ZC and the paper it cam with said that the CRX SI with the DOHC ZC had a fual cutoff of 7800. is this true?

I found a chip that bumps rev limitto 8200 for 20 bucks

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33597&item=2420928604

do you think I should do it or not, cuz I plan on boosting at about 6 psi soon. if I shouldnt, any other way to raise the rev limit, or should I just stick with shifting at 6.5k since the engine is old.