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Old 10-25-2012, 04:24 PM
ap72 ap72 is offline
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Originally Posted by E.Furgal View Post
you can't up the fuel pressure that high.. the tbi regulator won't take it.. for one.
like a carb cfm there is a point that no matter how much psi you hit it with it doesn't flow more fuel through the injector ..
remember you have 2 injectors not 8.. getting 3% more flow out of an injector then times 8 makes a little differance... 3% more flow out of 2.. isn't gonna cut it..

buy the way the bbc injector rating of 80-85 is to high of a duty cycle.. for any long term use... drag car.. fine.. long hyway run.. you'ls let the smoke out of the injector drivers
um I hate to be the one to teach you math, but a 3% net increase is a 3% net increase- no matter what. you can slap 2, 8, or 493 in front of it the 3% net increase remains the same.

Secondl its super easy to modify a TBI regulator- probably the easiest factory regulator to modify actually, and yes it can handle the pressure.

Lastly, your injector flow rate is ALWAYS measured at 100% duty cycle. And unless you're cruising on the highway at peak power (maybe in a cop chase?) you won't be even close when cruising.

Oh, and the 2" blades are NOT the restriction on a TBI unit the stock 50mm blades can flow more than enough for 500hp- the restriction is the injectors and all the irregularities ahead of the throttle plates that disrupts airflow.

Its pretty obvious that you have NFC when it comes to fuel injection.
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