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Old 06-22-2016, 05:51 AM   #82 (permalink)
Jinxx
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Join Date: Dec 2015
Location: South Carolina
Posts: 699
Drives: 2017 nismo 370z
Rep Power: 3375
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Quote:
Originally Posted by Chemicool View Post
When is the Fuel Return system required for a twin turbo build. Is it really necessary or does it depend of the injector size and pump size you're using? Or whp you're going for? Just trying to see if it is necessary cause it's a significant cost for system and install labor
Around 500 whp you will need to upgrade to a fuel return system .....factory regulator will only provide 52lbs of pressure ....regardless of fuel pump ...larger injectors will create a pressure drop as boost begins ...so once you run out of fuel pressure nothing you can do if you begin to run lean ....I just installed my return fuel kit over the same issue easy install did it in a few hours.
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