power dropoff before redline?
im noticing that around 6800-7000rpm im getting a power dropoff. is there some sort of rev limiter or fuel cutoff in my car causing this? any ideas?
car: '90 GXL k&n filter + air scoop shooting air into stock airbox headers no cats cherry bombs switch to disable fuel pressure regulator this has been happening since i got the car |
could be some dirty fuel injectors...or maybe you're ports aren't opening like they should...
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the engine pulls strong up until then, and i recently had my ports cleaned. also, with the fuel pressure regulator disabled, im getting the max fuel pressure so i should be getting all the fuel i need.
thanks for the thoughts on it though. |
How did you disable your fuel regulator? What PSI are you pushing to the rail?
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basically the system is prevented from shunting fuel back to the tank now, so its pushing the max pressure at the flick of a switch. i believe for a 90n/a its around 33psi. could be wrong though.
still looking for help with the ore-redline power loss.... :) |
umm where is the switch?... are you cutting off the vac to the fpr? or cuting off the return line so 100% pressure goes to the injectors? I really hope your not cutting off the return line, but I doubt it would run that way anyways as you'd have about 90psi
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the mod was done by a friend of mine. its set up with solenoid so i can flip a switch in the car while im driving to increae the pressure. i know im not running 90 psi though.... only about 30-35 or so.
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does it die off with the sitch in both places? or just while on or off?
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on or off it still dies. even before this mod was done.
even before headers were put on. |
Check your timing, and clean your injectors.
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It sounds like it's getting lean on the secondary injectors. Have them calibrated and cleaned.
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Angel Gaurd
Hey Angel Gaurd... My car spits out droplets of gas when I start the car when cold. It goes away after it warms up. DO u know if its my injectors.. If so why would they clear up after warm. Mabey my tps is misadjusted??? NO.. Anyone.
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