Megasquirt injector impedence?
injector impedence?
can't seem to find a specific answer searching.
just wondering if there is a preference between the S5 (high) and S4 (low) impedence injectors using with the megasquirt.
i am going to pick up some 550cc injectors, and both are available to me, S5 and S4.
i currently have 2 S5 injectors, so i figure picking up the other 2 S5 injectors makes sense...unless i need S4 injectors??
thanks
just wondering if there is a preference between the S5 (high) and S4 (low) impedence injectors using with the megasquirt.
i am going to pick up some 550cc injectors, and both are available to me, S5 and S4.
i currently have 2 S5 injectors, so i figure picking up the other 2 S5 injectors makes sense...unless i need S4 injectors??
thanks
Rotary Enthusiast
Joined: Oct 2001
Posts: 1,022
Likes: 4
From: Ontario, Canada
Aaron,
You can run high or low-impedance injectors. If you've got the choice, I'd go with the S5 high impedance units. Low impedance requires either series resistors, or some extra setup/tuning steps to get the pwm settings correct for these specific injectors.
Yes, you can run different sized injectors. The 'Dual Table' code is long gone, and has been merged with MSnSExtra. The Extra code also has injector staging capability, which means tuning via the dual table method is no longer needed. It's much easier to tune with one VE table than two.
You can run high or low-impedance injectors. If you've got the choice, I'd go with the S5 high impedance units. Low impedance requires either series resistors, or some extra setup/tuning steps to get the pwm settings correct for these specific injectors.
Yes, you can run different sized injectors. The 'Dual Table' code is long gone, and has been merged with MSnSExtra. The Extra code also has injector staging capability, which means tuning via the dual table method is no longer needed. It's much easier to tune with one VE table than two.
RX-7 Alumni
Joined: Oct 2002
Posts: 1,140
Likes: 1
From: Spacecenter Houston
Originally Posted by coldfire
can't seem to find a specific answer searching.
just wondering if there is a preference between the S5 (high) and S4 (low) impedence injectors using with the megasquirts
just wondering if there is a preference between the S5 (high) and S4 (low) impedence injectors using with the megasquirts
Originally Posted by RotaryResurrection
Year type impedance plug style plug notch position flow rating color part number
84-85 13B NT low square center 680cc orange 195500-0900
86-87 13B NT low square center 460cc red 195500-1350
86-87 13B T low square center 550cc tan 195500-1370
88 13B NT high square offset 460cc purple 195500-1350
88 13b T high square offset 550cc purple 195500-1370
89-91 13B NT high oval center 460cc red 195500-2010
89-91 13B T high oval center 550cc purple 195500-2020
84-85 13B NT low square center 680cc orange 195500-0900
86-87 13B NT low square center 460cc red 195500-1350
86-87 13B T low square center 550cc tan 195500-1370
88 13B NT high square offset 460cc purple 195500-1350
88 13b T high square offset 550cc purple 195500-1370
89-91 13B NT high oval center 460cc red 195500-2010
89-91 13B T high oval center 550cc purple 195500-2020
