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Hello I have a 90 TT with stock 370cc injectors and was looking to upgrade to the 615cc injectors and was questioning about if I would have to upgrade the fuel pump as well along with ecu tune or would it be fine just doing the upgraded injectors? Is stock tune.
 

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Hey @Johnnyboi if you're going to upgrade injectors then you definitely should get the tune to go with it. It's recommended you upgrade the fuel pump depending on how much power you plan on making.


When upgrading to higher power levels, stock fuel injectors are short lived as they simply cannot deliver enough fuel to safely run more than ~380RWHP. These Nismo injectors are engineered and designed to flow larger amounts of fuel to keep up with the demand as airflow increases. Injectors are precision made and have exceptional calibration directly from the factory.
 
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