UTEC and 550cc injectors or bigger , problem...

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May 24, 2007 | 07:22 PM

#21

al v

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From: santiago, chile

Quote:

Originally Posted by Sharif@Forged

Seems like every car, and every injector, can be hit or miss. We've done a bunch that crank right up when warm, and a small minority of others, need a throttle blip. Lowering the pressure to 37-42psi can help, but then you sometimes run out of fuel up top, depending on the injector size the customer has.

With the FCON, all of our cars start right up...instantly...with no throttle intervention.

The low impendence injectors we use with the FCON, have far superior response time, when compared to high impedence injector. So they operate much better at low pulseswidths, such as start and idle conditions.

Hope that helps.

I would like to have an hks dealer here to tune the FCON , but I´m a little far , like 10.000 miles away.........hohoho.
Now is winter here , with colder temps the problem is practically solved....but sometimes a throttle blip is needed when the engine is warm.......so I´m thinking in the Hydra or Aem EMS...........

Last edited by al v; May 24, 2007 at 07:27 PM.

May 24, 2007 | 07:53 PM

#22

baptist

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From: England

Im running RC550 injectors and a UTEC, never had 1 single problem starting under any conditions.

May 25, 2007 | 08:26 AM

#23

THE ROADSTER

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From: CORONA

Quote:

Originally Posted by al v

There is any way to solve the warm starts ,with 550cc injectors or bigger, with the UTEC ?????? I know that pushing the gas pedal ,you could get easy starts , but even with this , sometimes my car takes a very long time to start, and the dark smoke after that is killing me.......

I got he same problem and Sam at GTM is putting in the Fcon and fuel return right now, hopefully this will solve the problem.

May 25, 2007 | 09:03 AM

#24

98intrigue

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From: Clearwater, FL

Quote:

Originally Posted by baptist

Im running RC550 injectors and a UTEC, never had 1 single problem starting under any conditions.

+1 for me.

May 25, 2007 | 10:18 AM

#25

al v

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From: santiago, chile

Quote:

Originally Posted by 98intrigue

+1 for me.

Probably you doesn´t have a 3.5 bar FPR , I know if I drop the fuel press , the problem would be solved , but I´m runing 14 lb and the injectors are at 85% of duty cycle , if I drop the fuel press ,the injectors would be maxed out or close to the 100% of duty cycle , not a very good idea.............