Injector duty %

boostedeh2 · Post by **boostedeh2** » Sun Jan 11, 2009 7:18 pm

Bugermass wrote:Its not the duty cycle then, it has to be something with the way injector pulse width is calculated. OR mabey because o differences in impeadances with resistor boxes and what not the injectors arn't really active for the INJ PW that the ecu is commanding.. I don't know, but somthing is not correct..

I'm running 10ohm 10 watts inline resistors right now...maybe I'll take those out and wire up the honda resistor box to see if it'd make a difference.

xenocron · Post by **xenocron** » Sun Jan 11, 2009 9:09 pm

Post your calibration...

boostedeh2 · Post by **boostedeh2** » Sun Jan 11, 2009 10:09 pm

xenocron wrote:Post your calibration...

Post by **calvin** » Mon Jan 12, 2009 6:22 am

well just tune.. you will feel when u run out of injectors... I can't explain why the duty sometimes show wrong(like this case)

Post by **Bugermass** » Mon Jan 12, 2009 1:18 pm

that what I do..

boostedeh2 · Post by **boostedeh2** » Mon Jan 12, 2009 3:16 pm

calvin wrote:well just tune.. you will feel when u run out of injectors... I can't explain why the duty sometimes show wrong(like this case)

sounds good

Post by **Gaskleppie** » Mon Jan 12, 2009 6:35 pm

Has anyone ever used a scope to measure the injector time and compared it with what eCtune says? Would be interesting!

Post by **calvin** » Mon Jan 12, 2009 7:42 pm

nope.. but i should be able too

Post by **Bugermass** » Mon Jan 12, 2009 8:53 pm

it really doesn't bother me, but for someone who gets single user version and doesn't know alot about tuning it may cause a problem..

boostedeh2 · Post by **boostedeh2** » Fri Jan 16, 2009 2:53 am

I had the car on the dyno today and was having problems with fuel pressure drop. We adjusted to 45psi at idle and would rise to about 55psi but would started dropping fast in boost...the lowest we saw was 30psi so we let off. Thinking its the crappy b&m fpr or the walbro 255 went bad..I just put back the stock fpr but it doesn't run as smooth as the b&m.

JaredKaragen · Post by **JaredKaragen** » Fri Jan 16, 2009 6:13 am

calvin wrote:nope.. but i should be able too

could this difference be the difference between an empty injector and one with X amount of fuel pressure going into it? This could definitely be the whole gremlin....