Not sure if this has been mentioned recently but to anyone thinking about buying a set of " NISMO 555 injectors" like the ones from the US. no actual fault with them or the suppliers but the flow rate of the new ones now selling are over 600cc, given that the older 555`s were much less, the issue comes with "generic 555" eproms that are NOT acurately mapped to the new ones and will be overfueling and any associated issues that can cause.

 

Having seen yet another zed with this problem I thought a heads up may just help with any pre-purchase choices, factor in a custom eprom and it will sort this out, any of the guys writing eproms here should be able to help.

 

 

Jeff TT

Hi Jeff,

 

Excellent point! The new so-called Nismo 555cc injectors are actually 615cc injectors (out of a Scooby I believe) and regular 555cc chips will NOT work properly for the new injectors. This is a change that Nismo has kept very quiet about with various degrees of success. To the best of my knowledge there aren't any specific 615cc chips available on the market but DTA-Motorsport have a chip that will work although no guarantees can be given until further development has been done.

On a 'standard' tune chip it is a simple matter to alter for any size of injector, although ideally for performance and safety fine tuning would be required.

IIRC 615 is the size of the injector, been discussed quite a few times on tt.net.