Injectors at the Dyno???
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I would not be comfortable with the DC reading 83% at 5725 RPM?
What is your voltage reading at that level and how old are the fuel pumps?
Similar builds we have tested have the DC in the mid-60's.
It would be nice to know where HP and torque peaked and other data as well.
What is your voltage reading at that level and how old are the fuel pumps?
Similar builds we have tested have the DC in the mid-60's.
It would be nice to know where HP and torque peaked and other data as well.
Pronto
No amount of evidence will ever persuade an idiot.
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Duty Cycle
What 80# injectors ?? What are you logging the DC with ?? and whats your idle fuel pressure line off ?
The duty cycle is the time the injector is open over the available time the injector can be open for a given stroke. 100% duty cycle is 720 degrees of crank rotation. As the engine speed increases the available time for the injector to be open per duty cycle decreases, at the same time the engine fuel requirements increase as the airflow thru the engine increases. So it may make sense considering the large cam and turbo.
Great ... you need to raise your base FP that's FIRST ... Those injectors like to operate at higher Fuel pressures.. you will see just adding in 5 psi what will happen to the DC.
Second what your seeing with the PL is slightly elevated from what the actual DC is ...
Those injectors aren't even close to being done @ that power level... so you have room left ( way more than what your making power wise now)
Also as mentioned above .. make sure you check voltage at the pumps to ensure that is not a problem
I have no issues with seeing 90% DC ...ON SIEMENS 80's others I can't comment about as it would depend on which injector...
YOU CAN NOT JUST SAY don't ever go above X % DC as its all relative to WHAT the injector linearity is as well as the pumps that are supplying the fuel. Further more the injector drivers themselves
have an impact.
The key to the puzzle is to match the pump, injectors, along with making sure clean power is supplied to each while balancing pressure to keep up with the power being made.
I have yet to ever see an injector FAIL @ 100 % duty cycle.. but what can happen is that the coil may over heat from extended FULL ON time.
The other thing is that running higher DC's on CERTAIN injectors will lead to irratic fuel delivery ... The Siemens don't exhibit this behavior until almost full Saturation. They also work EXTREMELY well at higher Fuel pressures...
Turn the pressure up.. see what happens to the DC !
Pronto
No amount of evidence will ever persuade an idiot.
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Eric's chips are usually set up for 43lbs no line on at idle.
I don't think 14.4 Volts = Voltage-booster working...?
Using One on my car, I am over 15, or even 16 volts when it is activated.
14.4 sounds like normal Alt. output to me...?
Anyone else have a comment about that ?
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Damn Chuck, could not get pass looking at the librarian to read anything in the library.
TurboTdr3.8
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What reading material was there from the top page was good enough for me .
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