dupping alot of fuel sti yellow injectors - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

slim_l2002 · 02-01-2012, 03:58 PM

Ok so I got an 18g Turbo. Z32. Maf and sti yellow injectors which everybody says they're. 550cc but comes to find out their 520cc. (i just found that out after the install).Ok so I installed z32 injectors and the Rom tune ecu set for 550cc and z32.
When I crank it. Its run really rich. No I don't have a wideband. But its idles roughly. Revs fast. But its blows alot of black smoke.... (rich right?) . Ok so. My question. I know of need tune. But don't it seem very off.. is it because my wanna be 550cc are really 520cc? Since the ecu is set at 550cc. But wouldn't it run lean since it think its running 550cc but only putting 520cc? I e been on fourms bit I never heard of people having thus kind of problem. (or maybe im not search correctly)
My question to yall is what you think is the problem?
So you think if I get the ecu reruns for 520cc that it will fix it?
Or if I get some real 550cc that it will fix it.?
Or you think something is wrong with my injectors? Or
You think I should get a piggyback and just tune it.? Lmk something asap.

it seem like im answering my own question with the retune thing but i want to confirm it.

02-01-2012, 03:58 PM	#1
slim_l2002 Join Date: Mar 2010 Location: Waco, Texas Age: 40 Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	dupping alot of fuel sti yellow injectors Ok so I got an 18g Turbo. Z32. Maf and sti yellow injectors which everybody says they're. 550cc but comes to find out their 520cc. (i just found that out after the install).Ok so I installed z32 injectors and the Rom tune ecu set for 550cc and z32. When I crank it. Its run really rich. No I don't have a wideband. But its idles roughly. Revs fast. But its blows alot of black smoke.... (rich right?) . Ok so. My question. I know of need tune. But don't it seem very off.. is it because my wanna be 550cc are really 520cc? Since the ecu is set at 550cc. But wouldn't it run lean since it think its running 550cc but only putting 520cc? I e been on fourms bit I never heard of people having thus kind of problem. (or maybe im not search correctly) My question to yall is what you think is the problem? So you think if I get the ecu reruns for 520cc that it will fix it? Or if I get some real 550cc that it will fix it.? Or you think something is wrong with my injectors? Or You think I should get a piggyback and just tune it.? Lmk something asap. it seem like im answering my own question with the retune thing but i want to confirm it.