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you have posed the same question i have been asking myself for a bit now but i neither have +40s nor an SRT i did have +20s but they were sold a bit ago
 

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as long as you can mount it on the fuel rail then you should be okay. YOu can always change the injector clips and that should make it a happy camper. You should be able to use various manufactures pieces just by changing the clips on the injector harness as long as the injector sits okay.
 

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no! Those injectors are a very different design, internally (electronically). They're LOW IMPEDENCE, and are peak-and-hold, not high-impedence saturation. Does anyone know the flow rate of the current injectors? If they're the same as OEM Neon injectors (19lb./hr.) then a set of minivan flex-fuel injectors would be a small upgrade, and would probably plug right in (E85 requires more fuel than gasoline, so the flex-fuel minvans use 58psi regulators and slightly larger injectors). Other than that, you'd have to change the plugs, but we do have both 24 and 30 lb./hr. injectors. You'd have to be making over 300hp to need the 30# injectors, and even then you'd have to be able to tune the curb idle to get the car to idle right.
 

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Discussion Starter #5
DM Racing said:
no! Those injectors are a very different design, internally (electronically). They're LOW IMPEDENCE, and are peak-and-hold, not high-impedence saturation. Does anyone know the flow rate of the current injectors? If they're the same as OEM Neon injectors (19lb./hr.) then a set of minivan flex-fuel injectors would be a small upgrade, and would probably plug right in (E85 requires more fuel than gasoline, so the flex-fuel minvans use 58psi regulators and slightly larger injectors). Other than that, you'd have to change the plugs, but we do have both 24 and 30 lb./hr. injectors. You'd have to be making over 300hp to need the 30# injectors, and even then you'd have to be able to tune the curb idle to get the car to idle right.
This is my goal is push the HP to a 300 fwhp range. So, will the TD04 have life left in the 300FWHP range and work with the #30 injectors?
 

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Highly unlikely that the SRT-4 is operating with 19 lb/hr injectors. In order to make stock hp (~220) with 19 lb/hr injectors the fuel system would have to run at around 140 psi static (0 boost, 0 vacuum).

I would guess that the stock injectors are already well over 30 lb/hr, which would put us in the ball park for the HP we've been seeing. With a static fuel pressure of 55 psi, injectors rated at 37 lb/hr and 100% duty cycle, and at 16 psi boost, HP calculates out to be around 216.

Even if the +40 injectors are a perfect fit you can't expect to just pop them in and go. You have to have a way to control the fuel delivery.
 
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Mike B.
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