Injector size question N/A

scroupious

The items I have added to my 09 370Z

Bosch 650cc injectors
Specialty Z Ecutek tune with Seb running E85
Fast intentions Long tube header attached to Tomei exhaust all the way back
Ported intakes
Stillen Gen 3 long tube cold air intake
JWT C2 exhaust camshafts

My question is would I benefit by adding bigger injectors and adding Big Bore throttle bodies?

Just trying to build a very fun N/A Street car to mess with Mustangs, Camaro's and all the WRX's hahah. I have a 2016 Camaro SS that my son drives so we joke around a lot.

JLarson

My experience with ported tb's is that you'll see little, if any, in the way of gains with them, although if you want a somewhat choppy and uneven idle, go for it. As far as bigger injectors, what did your tuner say? Is fuel a restriction?

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2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 506 WHP, 440 WTQ @ 7.5 psi
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)

scroupious

I don't think the injectors are restricting. Maybe I just have the thoughts of bigger is better, from what I have researched it seems anything larger than 700cc injectors basically does not make much difference unless you Turbo or super charge the car.

I was just curious what thoughts were or if anyone noticed anything on an N/A engine.

thank you. I appreciate your input on both the throttle bodies and injectors.

Whjaxn17

Those 650s are plenty for NA. Most people, myself included, run the OEM 550cc GTR injectors for FBO NA builds on E85.

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377whp/299wtq NA
704whp/519wtq, SOHO stage 2.5
IG: pearlywhite.z