Wiring in a KB Boost a pump

[E85LSX]

Originally Posted by Codefive

LPE's way IS the correct way. I have wired them both ways and measured voltage at the pump. Both E85LSX's & LPE's ways get you the same voltage increase at the pump however ... LPE's way prevents other issues that WILL pop up later on. Believe me! they have tested this at great lengths

Thanks for the tip.

Here is an update, I have it wired after the FPCM now for 5 days and I have been driving it every day with no problems. . . will problems arise in the future, I don't know.

I will rewire mine again this weekend before the FPCM to be 100% sure about this since many people are telling me it does work before the FPCM. It is possible my wiring was screwed up when I had it before the FPCM.

I'll post my findings after I test it again.

[E85LSX]

Here is some interesting info:

I just wired my BAP before the FPCM (like LPE) to do yet another test in case I had something messed up the first time.

I changed no settings on the BAP I only changed where it is spliced in and I recorded the voltage to the pump and logged the rail pressure for a comparison of the two different methods.

Wired after the FPCM (my way) the voltage to the pump was increased to 15.5volts which was just enough to maintain my rail pressure (55psi). (BAP is set to 3/4)

Wired before the FPCM (LPE way) the voltage to the pump was increased to 14.02volts and my rail pressure fell on it face (40psi). (BAP is set to 3/4)

With No BAP the max voltage I recorded to the pump was 13volts and fuel pressure falls to 30psi.

So in summary both the LPE way and my way will increase the voltage to your fuel pump. My way increases it MUCH more, this is why I originally though LPE's way didn't work at all.

Wire your cars which ever way makes you all happy. I will definitely wire mine the only way I can get it to actually help my fuel pressure problem. If my car blows up because my wiring differs from LPE's way I will let you all know. Until that day I will enjoy having steady fuel pressure at WOT.

[R8cerX]

We ended up wiring in the BAP like E85 and so far have had no issues...fuel pressure holds steady at 50psi. Thanks again for everyones input/opinions

[ADM PERFORMANCE]

Fuel Pump Flow Control Module
The fuel pump flow control module is a serviceable GMLAN module. The fuel pump flow control module receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The fuel pump flow control module sends a 25 KHz PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 A. A liquid fuel pressure sensor provides fuel pressure feedback to the fuel pump flow control module.

Something you 2 might want to know,If you don't already.

Andy

[E85LSX]

Here is the latest update. . . I'm am finally done testing/messing with this BAP.

Wired after the FPCM the BAP worked great. . . until it started constantly blowing the inline fuse. This method does not work.

Wired before the FPCM the BAP does work. . . but it doesn't help much at all. With the BAP set to full rich position (17.5volts) my pressure fell to 45psi. With the BAP on the leanest setting (14volts, basically off) my pressure fell to 35psi.

The bottom line is the BAP works like sh*t on this car, I am now looking into a dual pump setup.

[the rich dude]

Originally Posted by E85LSX

Here is the latest update. . . I'm am finally done testing/messing with this BAP.

Wired after the FPCM the BAP worked great. . . until it started constantly blowing the inline fuse. This method does not work.

Wired before the FPCM the BAP does work. . . but it doesn't help much at all. With the BAP set to full rich position (17.5volts) my pressure fell to 45psi. With the BAP on the leanest setting (14volts, basically off) my pressure fell to 35psi.

The bottom line is the BAP works like sh*t on this car, I am now looking into a dual pump setup.

DAMN, was hoping it was going to work out so I wouldn't have to install another pump.

Hopefully the slight increase in voltage the BAP supplies will be enough for my 600-620RWHP Procharger adventure I'm about to embark on

[Will@Apf]

Originally Posted by E85LSX

Here is the latest update. . . I'm am finally done testing/messing with this BAP.

Wired after the FPCM the BAP worked great. . . until it started constantly blowing the inline fuse. This method does not work.

Wired before the FPCM the BAP does work. . . but it doesn't help much at all. With the BAP set to full rich position (17.5volts) my pressure fell to 45psi. With the BAP on the leanest setting (14volts, basically off) my pressure fell to 35psi.

The bottom line is the BAP works like sh*t on this car, I am now looking into a dual pump setup.

Do a Bosch 044 pump! ps old islander here!!

[DarkNight]

Originally Posted by ADM PERFORMANCE

Fuel Pump Flow Control Module
The fuel pump flow control module is a serviceable GMLAN module. The fuel pump flow control module receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The fuel pump flow control module sends a 25 KHz PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 A. A liquid fuel pressure sensor provides fuel pressure feedback to the fuel pump flow control module.

Something you 2 might want to know,If you don't already.

Andy

Originally Posted by E85LSX

Here is the latest update. . . I'm am finally done testing/messing with this BAP.

Wired after the FPCM the BAP worked great. . . until it started constantly blowing the inline fuse. This method does not work.

Wired before the FPCM the BAP does work. . . but it doesn't help much at all. With the BAP set to full rich position (17.5volts) my pressure fell to 45psi. With the BAP on the leanest setting (14volts, basically off) my pressure fell to 35psi.

The bottom line is the BAP works like sh*t on this car, I am now looking into a dual pump setup.

Andy,

So based on the info in this thread what is your professional opinion on the BAP? Does it help? Is it worth the $......... How do you wire it for best performance?

Thanks!

[ADM PERFORMANCE]

Originally Posted by DarkNight

Andy,

So based on the info in this thread what is your professional opinion on the BAP? Does it help? Is it worth the $......... How do you wire it for best performance?

Thanks!

Yes it is a great product,does exactly what it claims.Yes it is invaluable.Wire it the way it was intended,per Kennebell instructions for fpcm equipt vehicles.

Andy

[R8cerX]

Originally Posted by E85LSX

Here is the latest update. . . I'm am finally done testing/messing with this BAP.

Wired after the FPCM the BAP worked great. . . until it started constantly blowing the inline fuse. This method does not work.

Wired before the FPCM the BAP does work. . . but it doesn't help much at all. With the BAP set to full rich position (17.5volts) my pressure fell to 45psi. With the BAP on the leanest setting (14volts, basically off) my pressure fell to 35psi.

The bottom line is the BAP works like sh*t on this car, I am now looking into a dual pump setup.

He's correct, 4 days after wiring after the FPCM, the fuse blew. rewired today, going back on the dyno tomorrow. Will post results once complete.

[2Tightwads]

Wired before FPCM as in the instructions that come with part is correct folks.

[E85LSX]

Originally Posted by ADM PERFORMANCE

Yes it is a great product,does exactly what it claims.Yes it is invaluable.Wire it the way it was intended,per Kennebell instructions for fpcm equipt vehicles.

Andy

Andy,

Without a BAP my fuel pressure drops to 35psi at WOT high rpm. With the BAP wired correctly before the FPCM and set to its richest setting my fuel pressure drops to 45psi under the same WOT high rpm conditions.

Do you think the BAP is increasing my fuel pump output by 50-70% as the website claims?

Without getting into any analysis or anything too technical my gutt feeling is that my fuel pump output is not increased by 50% . . .

[JANNETTYRACING]

Originally Posted by E85LSX

Andy,

Without a BAP my fuel pressure drops to 35psi at WOT high rpm. With the BAP wired correctly before the FPCM and set to its richest setting my fuel pressure drops to 45psi under the same WOT high rpm conditions.

Do you think the BAP is increasing my fuel pump output by 50-70% as the website claims?

Without getting into any analysis or anything too technical my gutt feeling is that my fuel pump output is not increased by 50% . . .

It is certainly better but not 50% better that is for sure.

It is not the fault of the BAP.

Your Just Out of Pump Volume.

Ted.

[ADM PERFORMANCE]

All you guys do understand that the ECM and FPCM control the fuel pressure.



Andy