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Join Date: Jan 2006
Location: Johannesburg, South Africa
Posts: 34
Ideal Injector Size For 3.6 S/charged

We are running a 964 motor that has been supercharged (Cartronics) and it is reported that the flywheel power is in the region of 500 hp. We run the standard DME with a DASTEK piggyback system (D8).

When the car is on the dyno at DASTEK it is found that even at the leanest setting on their piggyback the mixture is way to rich.

They have suggested that we look at alternate injectors because at the bottom end they cannot come close to getting an ideal air fuel mixture. (This of course will influence the crispness with which the motor accelerates among other problems).

As a reference:

Standard 964 INJECTOR - Output/Minute 2.4 cc at 3.8 BAR yielding 4.9cc DUTY CYCLE (1000 pulses / minute)

#0280150737 INJECTTOR - Output/Minute 4.9cc at 3.0 BAR yielding 9.2cc (1000 pulses/min) (AUDI QUATTRO RALLY)

The Audi injector is the one that is currently in the car. It is a Saturated Injector at 15.7 Ohm. (The German technician added a JA! after the 15.7 Ohm - so we in jest also call it a 15.7 Ohm, JA! injector. LOL)

We are petrified of running lean under boost so we do not want to revert to the standard 964 injector. Please help. What injector would you suggest we try?

Old 01-29-2007, 10:45 PM
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