FYI from other threads...
***Note Impedance ***
RickM: I believe the Carrera injectors are Bosch part # 0.280.150.158. Same as '86-'88 924S and 2/'85-'88 944 (Non-Turbo and Non-S)
240cc/min @ 45 PSI, 2.5 Bar pressure
BeepBeep: One source for injectors
http://www.wmsracing.com/pgi-CustomListProducts?Fuel%20Injectors,2,160,=,inject or
Warren:
"Bentley manual says 3.2 Carrera injector specs are
2 - 3 Ohms."
FastPat:
"Model number: 0 280 150 158
Impedance: Low, 2.4 ohms
Flow rate: 229 cc/min @ 3 bar*
Flow rate in pounds/hour: 21.8"
Lukesportsman:
"
Porsche used low impedence peak and hold injectors. Yes, the injector driver is the "limiting" factor. In theory and extreme applications the peak and hold has the performance advantage. In all, but the extreme, this isn't an issue today but certainly was 10 years ago.
Most the better priced injectors advertised in mag's are high impedance since they are more commonly used in OEM. Ford, GM, Holden, Honda etc. chose to go with the easy/cheaper to fire injectors. You can get conversion boxes to fire a different injector but this will eat the difference in $$ anyways. These were often used by say Mustang racers 10 years ago that went low impendance to find an injector big enough. You typically find very large expensive injectors in PH low impedance.
Long story short: DON"T BUY those. keep your PH concept and just buy different aftermarket ones of equal size. Little more for the injector, but less hassle."