i have a rebuilt new large streetported engine and couple of bolt ons like RB rev 2 exhasut/ intake..im running Rtek 1.7 right now. anyway i have been running cleaned/blueprinted inj combo 550/850cc and when the secondaries come on im getting to much fuel..they were low imp secondary AC delphi 850cc inj and i soldered in 10 ohm ceramic resisters to make them high. anyway of checking if they are actually running as high imp inj now?. or should i think of dropping down to 550/720 combo?

 

rtek 1.7s are designed to work with 550/720s, which would explain why you're running rich...

I would either get 720s or an Rtek 2.1 so you can lean out the secondary injectors.

if you added a 10 Ohm resister, they're probably working fine.

 

yea i dont have a wideband as of yet but when i mean there running too much it means running to much like at more than 1/2 throttle or any kind of psi over 3lbs it bogs horribly. yea rtek said at least 720's but without really controlling the fuel guess thats my problem all together..should have went back to the site in the first place and reread the details again..
thanks close thread