Tuning injectors for boost referenced regulator / delete FPCM - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Jpb972 · 03-25-2015, 04:28 PM

Installed squash system with return and boost referenced regulator. Now I need to tune for it.
Looking for tuning tips on how to effectively remove the FPCM and recalculate injector info for IFR modifiers and offsets etc. (Maybe FIC will have the info needed for the FIC1000 injector data?)

Using HP Tuners

granatl · 03-25-2015, 08:02 PM

I asked this same question on the HP Tuners board. Paraphrasing... The boost pressure offsets the fuel pressure, so there's no need to compensate for this.

I have the wrong OS loaded, so I tell you which setting to turn off the FPCM.

As the ECM can no longer see the fuel pressure, it apparently just goes with your programmed "desired fuel pressure." If you leave that constant, I don't think you'll have to modify those injector tables. I haven't so far.

Jpb972 · 03-25-2015, 09:13 PM

Quote:

Originally Posted by granatl

I asked this same question on the HP Tuners board. Paraphrasing... The boost pressure offsets the fuel pressure, so there's no need to compensate for this.

I have the wrong OS loaded, so I tell you which setting to turn off the FPCM.

As the ECM can no longer see the fuel pressure, it apparently just goes with your programmed "desired fuel pressure." If you leave that constant, I don't think you'll have to modify those injector tables. I haven't so far.

Thanks. I think I did see that post about the injectors and I understand what he's saying. But then someone else chimed in and had a different opinion. In searching google I'm reading different things.

Jpb972 · 03-26-2015, 06:24 AM

Quote:

Originally Posted by granatl

I asked this same question on the HP Tuners board. Paraphrasing... The boost pressure offsets the fuel pressure, so there's no need to compensate for this.

I have the wrong OS loaded, so I tell you which setting to turn off the FPCM.

As the ECM can no longer see the fuel pressure, it apparently just goes with your programmed "desired fuel pressure." If you leave that constant, I don't think you'll have to modify those injector tables. I haven't so far.

I've been thinking more about this post. So what your thinking is, for example, set the base commanded fuel pressure to 58, and then plug in the original data that is supplied with the injectors? What about the voltage settings, etc?

This will be first time with this stuff so I'm just trying to wrap my head around it. Lol.

Jpb972 · 04-01-2015, 09:17 AM

Bump

Any opinions on this?

Iam Broke · 04-02-2015, 12:21 PM

There is more to scaling that large of an injector to your setup. The limitations of the ECU require you to scale the tune. MAF and VE need to be scaled as well as the injector data. Not a good starting place to learn on. Contact a pro. Many are knowledgeable on the vendor list and will work with you if you have tuning software already. If HPT contact Slowhawk. If SCT call Jannetty.

I have the injector tables but the site won't let me upload it. Email FIC and tell them you need the 4 bar FIC1000 tables. I remember the LS3 tab is incorrect for the E38 ECU, I'm thinking the E40 tab lines up the columns in our tables but it's been a while.

03-25-2015, 04:28 PM	#1
Jpb972 Drives: 2011 2SS/RS Join Date: Oct 2013 Location: South jersey Posts: 584 View My Garage	Tuning injectors for boost referenced regulator / delete FPCM Installed squash system with return and boost referenced regulator. Now I need to tune for it. Looking for tuning tips on how to effectively remove the FPCM and recalculate injector info for IFR modifiers and offsets etc. (Maybe FIC will have the info needed for the FIC1000 injector data?) Using HP Tuners __________________

03-25-2015, 08:02 PM	#2
granatl Drives: 2SS RS ABM A6 Join Date: Jun 2010 Location: Pahrump, NV Posts: 273	I asked this same question on the HP Tuners board. Paraphrasing... The boost pressure offsets the fuel pressure, so there's no need to compensate for this. I have the wrong OS loaded, so I tell you which setting to turn off the FPCM. As the ECM can no longer see the fuel pressure, it apparently just goes with your programmed "desired fuel pressure." If you leave that constant, I don't think you'll have to modify those injector tables. I haven't so far. __________________ Jack Bilger

04-01-2015, 09:17 AM	#5
Jpb972 Drives: 2011 2SS/RS Join Date: Oct 2013 Location: South jersey Posts: 584 View My Garage	Bump Any opinions on this? __________________

04-02-2015, 12:21 PM	#6
Iam Broke PHAT B33 Drives: 2012 TF3 Camaro 2SS/RS M6 Join Date: Jun 2012 Location: Dark of the Moon Posts: 1,460 View My Garage	There is more to scaling that large of an injector to your setup. The limitations of the ECU require you to scale the tune. MAF and VE need to be scaled as well as the injector data. Not a good starting place to learn on. Contact a pro. Many are knowledgeable on the vendor list and will work with you if you have tuning software already. If HPT contact Slowhawk. If SCT call Jannetty. I have the injector tables but the site won't let me upload it. Email FIC and tell them you need the 4 bar FIC1000 tables. I remember the LS3 tab is incorrect for the E38 ECU, I'm thinking the E40 tab lines up the columns in our tables but it's been a while. __________________ Another 1 of 371 '12 T3 LS3 M6's built.