LH injectors: low impedance ok without resistor pack
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- rpruen
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LH injectors: low impedance ok without resistor pack
I have found from a reliable source....
As the subject says, you can fit low impedance injectors to your LH fuel ECU without any other modifications than to plug them in.
I have been running with this setup now for some time, and everything works as it should.
Note: Just to make sure! This doesn't apply to the non turbo 480 engines.
Richard
As the subject says, you can fit low impedance injectors to your LH fuel ECU without any other modifications than to plug them in.
I have been running with this setup now for some time, and everything works as it should.
Note: Just to make sure! This doesn't apply to the non turbo 480 engines.
Richard
Car Status: Squashed :(
Now have 765 GLE 2.8 V6
Now have 765 GLE 2.8 V6
- tobi480turbo
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Hi Richard,
THX for the useful information!
tomorrow my resistors are going to get removed
Regards
Tobi
THX for the useful information!
tomorrow my resistors are going to get removed
Regards
Tobi
red 480 turbo ´91, B20F(T) engine, NGK BPR 7ES sparks, increased MAF, injectors from a 760, cold air intake ,koni springs, Momo sport steering wheel, leather seats, volvo 14" rims, new TB25 turbocharger installed :)
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- tobi480turbo
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Hi,
as far as Richard told me the driver is fine so far ... it seems to be getting a little bit warmer than before but is working fine
and if you put bigger injectors onto the engine your MAF has to be modded in fact of running the higher flow rate of bigger injectors.
regards
Tobi
as far as Richard told me the driver is fine so far ... it seems to be getting a little bit warmer than before but is working fine
and if you put bigger injectors onto the engine your MAF has to be modded in fact of running the higher flow rate of bigger injectors.
regards
Tobi
red 480 turbo ´91, B20F(T) engine, NGK BPR 7ES sparks, increased MAF, injectors from a 760, cold air intake ,koni springs, Momo sport steering wheel, leather seats, volvo 14" rims, new TB25 turbocharger installed :)
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- martinholmesuk
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- rpruen
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Not quite true Martin!martinholmesuk wrote:no maf work was needed on mine with my low impedance injectors
Even not at all true realy.
You have an old style MAF (the early ones are scaled differntly) and your injectors happen to exactly match the fuel requirements of the engine, with the early MAF. Freaky coincidance, not pre planning
You also have high impeadance injectors.
Richard
Car Status: Squashed :(
Now have 765 GLE 2.8 V6
Now have 765 GLE 2.8 V6
- rpruen
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No it samples the injector resistance on startup, and does the peak and hold curents electronicaly. So there is no learning required as such.480_rocket wrote:Does the LH need to relearn a bit? The driver won't cook? Let us know good news though, didn't want to cut into my loom and find somewhere to mount the res+cap
The reason for more heat is that the output transistor is dropping more voltage to supply the correct current, so gets a little warmer. Everything is within the spec for the ECU so it will be fine.
As mentioned you will still need to scale the injectors and MAF to work together. If you are planning to fit a Saab MAF then go slightly rich on the fueling, and use an adjustable pressure regulator to drop the fuel pressure to trim the mixture to the right level.
Richard
Car Status: Squashed :(
Now have 765 GLE 2.8 V6
Now have 765 GLE 2.8 V6