Fuel cut
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Joined: Mar 2004
Posts: 1,041
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Fuel cut
Hi guys, I would like to know what is causing fuel cuts on my car.
Evo 7 with HF cat, cat back, removed the gommet inside the boost solenoid valve(increase the boost pressure), stock fuel pump, Ralliart ECU.
When I'm 1/2 throttle pressure it is fine 1,2...5th gears
When I'm at WOT the car gets fuel cut at 4th and 5th gear in high rpms (4500+)...
I would like to know if the fuel cut is happening due to stock fuel pump not being able to support enough fuel for 22 spike, 19 redline or an overboost condition or the ECU not supporting the increased air volume.
In the mean time I will put back the grommet.
Evo 7 with HF cat, cat back, removed the gommet inside the boost solenoid valve(increase the boost pressure), stock fuel pump, Ralliart ECU.
When I'm 1/2 throttle pressure it is fine 1,2...5th gears
When I'm at WOT the car gets fuel cut at 4th and 5th gear in high rpms (4500+)...
I would like to know if the fuel cut is happening due to stock fuel pump not being able to support enough fuel for 22 spike, 19 redline or an overboost condition or the ECU not supporting the increased air volume.
In the mean time I will put back the grommet.
Originally Posted by k270kmh
Hi guys, I would like to know what is causing fuel cuts on my car.
Evo 7 with HF cat, cat back, removed the gommet inside the boost solenoid valve(increase the boost pressure), stock fuel pump, Ralliart ECU.
When I'm 1/2 throttle pressure it is fine 1,2...5th gears
When I'm at WOT the car gets fuel cut at 4th and 5th gear in high rpms (4500+)...
I would like to know if the fuel cut is happening due to stock fuel pump not being able to support enough fuel for 22 spike, 19 redline or an overboost condition or the ECU not supporting the increased air volume.
In the mean time I will put back the grommet.
Evo 7 with HF cat, cat back, removed the gommet inside the boost solenoid valve(increase the boost pressure), stock fuel pump, Ralliart ECU.
When I'm 1/2 throttle pressure it is fine 1,2...5th gears
When I'm at WOT the car gets fuel cut at 4th and 5th gear in high rpms (4500+)...
I would like to know if the fuel cut is happening due to stock fuel pump not being able to support enough fuel for 22 spike, 19 redline or an overboost condition or the ECU not supporting the increased air volume.
In the mean time I will put back the grommet.
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Joined: Jan 2003
Posts: 2,239
Likes: 101
From: NR Reading PA
It happens at 1700 Hz Karman value at 20°C and 1000 mbar atmospheric pressure approx. That is roughly 1.2 bars relative boost. You are either sucking too much air or your boost is set high for the relative temperature and pressure you're experiencing.
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