Buffalo ny !Rough idle 1990zx Tt Help

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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Jayjay228
Posts: 30
Joined: Mon Jul 30, 2012 10:04 pm
Car: 1999 300zx twin turbo
550cc injectors new style withfuel rail adapter
chipped ecu
HKS HYPER exhaust
hid kit

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Looking for a mechanic around buffalo ny whi knows these cars! My car shakes real bad at idle and when driving under 2500 rpms I just put all new spark plugs. And sometimes when I'm driving I smell gas I got the new ptu and no check engine light I was just thinking about ordering the new injector kit any help thanks guys

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Jayjay228
Posts: 30
Joined: Mon Jul 30, 2012 10:04 pm
Car: 1999 300zx twin turbo
550cc injectors new style withfuel rail adapter
chipped ecu
HKS HYPER exhaust
hid kit

Post

Also if I order 550cc injectors could I use the stock ecu or do I need to get mine mod
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User avatar
t.mcginley.jr
Posts: 1547
Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
Location: New Jersey, USA

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Don't know about any mechanics near Buffalo, but a rough idle plus smelling gas could be a bad fuel pressure regulator or fuel dampener or fuel filter.

If you upgrade the fuel injectors above stock then yes, you will need to upgrade the ecu fuel maps.
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