Quote:
Originally Posted by mike the snake
Can someone explain to me about the port injector sizes?
When I ordered my Full Blown Premium stage 1 turbo kit, I ordered the optional 1000cc injectors. I am going for more power than the stock port injectors can handle, especially with methanol injection.
In reading about this, I see injectors of all sizes, 550cc, 750cc, 900cc, 1000cc, and I don't know what to make of it.
1000cc seems pretty big, but my tuner says it's OK to not drive them at or near max, but I don't plan on running E85 so I know I'm not going to come near to maxxing these bigger injectors out.
Any help or suggestions would be greatly appreciated.
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In general you would want the smallest size injectors that would cover your engines tuning needs plus a safety margin. The stock port injectors are in the low 200cc range I believe. Having said that, you can always tune for larger injectors though it would be much more sensitive and in my view more difficult to tune. Now if I was doing this myself, I would go with ID725 injectors just because I have extensively used them and their battery voltage compensation numbers are spot on and they have great low pulse width performance. So theoretically and assuming the oem map is properly scaled, all you have to do is plug is 725 into the injector size table and enter the battery voltage compensation numbers and it "should" be spot on for normal NA driving. Boost is something you have to tune for obviously.