ECS BAP install
Thread Starter
Instructor
Joined: Aug 2020
Posts: 114
Likes: 12
From: Houston
ECS BAP install
Getting ready to install the above with a ECS s/c kit. The ECS pdf shows the install without the racetronix harness. You basically find the wire loom/harness under the battery area and splice in the BAP. I'm good with that. Pretty straight forward.
My question is about using the racetronix harness. It involves going back in the LR wheel well and running wires forward and installing a relay for power, etc. It would seem to me that the ECS method is much easier as it involves only wiring in the engine bay. Am i missing something?
My question is about using the racetronix harness. It involves going back in the LR wheel well and running wires forward and installing a relay for power, etc. It would seem to me that the ECS method is much easier as it involves only wiring in the engine bay. Am i missing something?
Last edited by Bkings; Oct 20, 2020 at 12:33 AM.
Safety Car
Joined: May 2016
Posts: 4,633
Likes: 1,818
From: Erlanger, Kentucky
Few thoughts.
The Racetronix harness is an upgrade that is really worth it. It is easy to install and you can get OEM style connectors with it to connect the BAP to the harness. And the harness will increase the voltage to your fuel pump even without the BAP as it has larger gauge wiring that won't drop voltage. It is just a really good upgrade even on a stock Corvette.
The Racetronix harness is also pretty easy to install. Most of the work will be in the driver's side wheel well area in the rear (at least on my car it was). You will need to figure out exactly how your setup needs to be wired in but there are a number of previous threads discussing this. It is quite easy to run the harness through the drivers rocker panel; plenty of room and lots of wire length. It will go into the engine bay near the bottom of the windsheild washer reservoir. You will need to pull a few of the fasteners of the wheel well liner to work there and I recommend securing the loose wiring with some zip ties.
I am going by memory so I may not be remembering correctly but the Racetronix harness in the engine bay just connects to the alternator. I can't remember if it also connects to a ground but that is also easy if it does as you just run that to the existing ground stud on the frame on that side.
The other thing I like about the Racetronix harness is that for the Hobb switch and the extra connectors for wiring in the BAP, they are weather pak connectors so they will be water proof.
The Racetronix harness is an upgrade that is really worth it. It is easy to install and you can get OEM style connectors with it to connect the BAP to the harness. And the harness will increase the voltage to your fuel pump even without the BAP as it has larger gauge wiring that won't drop voltage. It is just a really good upgrade even on a stock Corvette.
The Racetronix harness is also pretty easy to install. Most of the work will be in the driver's side wheel well area in the rear (at least on my car it was). You will need to figure out exactly how your setup needs to be wired in but there are a number of previous threads discussing this. It is quite easy to run the harness through the drivers rocker panel; plenty of room and lots of wire length. It will go into the engine bay near the bottom of the windsheild washer reservoir. You will need to pull a few of the fasteners of the wheel well liner to work there and I recommend securing the loose wiring with some zip ties.
I am going by memory so I may not be remembering correctly but the Racetronix harness in the engine bay just connects to the alternator. I can't remember if it also connects to a ground but that is also easy if it does as you just run that to the existing ground stud on the frame on that side.
The other thing I like about the Racetronix harness is that for the Hobb switch and the extra connectors for wiring in the BAP, they are weather pak connectors so they will be water proof.
Last edited by Spaceme1117; Oct 21, 2020 at 05:48 PM.
Race Director
Joined: Dec 2013
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Not no, but hell No!!!!
BAP needs to pick up power from the engine fuse box with fuse, and needs to run its output power all the way back to the fuel pump connector on the larger correct size gauge wiring.
You try to use the oem wiring from the fuse box to the fuel pump connector with the BAP as shown in that install manual, and all your going to do is burn the OEM wire up since its too small of gauge wire to carry the added load.
The Racetronix harness is only $70, or you can build one for say $20 cheaper with relay instead, but either way, do not use the factory oem wiring for the BAP power input and output to the fuel pump like the install shows.
https://www.corvetteforum.com/forums...right-bap.html
BAP needs to pick up power from the engine fuse box with fuse, and needs to run its output power all the way back to the fuel pump connector on the larger correct size gauge wiring.
You try to use the oem wiring from the fuse box to the fuel pump connector with the BAP as shown in that install manual, and all your going to do is burn the OEM wire up since its too small of gauge wire to carry the added load.
The Racetronix harness is only $70, or you can build one for say $20 cheaper with relay instead, but either way, do not use the factory oem wiring for the BAP power input and output to the fuel pump like the install shows.
https://www.corvetteforum.com/forums...right-bap.html
Thread Starter
Instructor
Joined: Aug 2020
Posts: 114
Likes: 12
From: Houston
Not no, but hell No!!!!
BAP needs to pick up power from the engine fuse box with fuse, and needs to run its output power all the way back to the fuel pump connector on the larger correct size gauge wiring.
You try to use the oem wiring from the fuse box to the fuel pump connector with the BAP as shown in that install manual, and all your going to do is burn the OEM wire up since its too small of gauge wire to carry the added load.
The Racetronix harness is only $70, or you can build one for say $20 cheaper with relay instead, but either way, do not use the factory oem wiring for the BAP power input and output to the fuel pump like the install shows.
https://www.corvetteforum.com/forums...right-bap.html
BAP needs to pick up power from the engine fuse box with fuse, and needs to run its output power all the way back to the fuel pump connector on the larger correct size gauge wiring.
You try to use the oem wiring from the fuse box to the fuel pump connector with the BAP as shown in that install manual, and all your going to do is burn the OEM wire up since its too small of gauge wire to carry the added load.
The Racetronix harness is only $70, or you can build one for say $20 cheaper with relay instead, but either way, do not use the factory oem wiring for the BAP power input and output to the fuel pump like the install shows.
https://www.corvetteforum.com/forums...right-bap.html
I wondered about the ability of the stock wire to hold the increased flow. Thanks for the save!
Burning Brakes
Joined: Sep 2018
Posts: 1,023
Likes: 171
From: Auburn Al
the whole reason for the aftermarket harness, is to get more current to the fuel pump, I highly recommend the racetronic harness and SAC CITY corvette BIG 3 wiring kit for the C6, it's modeled after the C5 kit that worked so well, since installed the big 3 I don't get such a severe voltage drop like I used too and the RT harness is getting full ALT voltage back to my fuel pump, can't wait until I drop the rear cradle to finish the rest of the RT harness
Race Director
Joined: Mar 2011
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From: SW Florida
2021 C6 of the Year Finalist - Modified
Here you can get an idea of where the BAP is installed ... BAP installed on my GS in the forward area of the driver's rear wheel well.
This is using a Caspers fuel pump wiring harness (basically the same as the Racetronic harness)
Attachment 48332496
Attachment 48335122
This is using a Caspers fuel pump wiring harness (basically the same as the Racetronic harness)
Attachment 48332496
Attachment 48335122
Race Director
Joined: Mar 2011
Posts: 13,262
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From: SW Florida
2021 C6 of the Year Finalist - Modified
Maximum LS3 Fuel Pump Flow with Installed Boost-A-Pump
_______________________________
Increases Pump Voltage From: . . . . . 13.5 Volts . to: . 17.5 Volts . .(Only When Above 4 PSI Boost)
. . . . . - Resulting In -
Increased Pump Flow From: . . . . . . . 225 L / Hr . to: . 325 L / Hr
_______________________________
Increases Pump Voltage From: . . . . . 13.5 Volts . to: . 17.5 Volts . .(Only When Above 4 PSI Boost)
. . . . . - Resulting In -
Increased Pump Flow From: . . . . . . . 225 L / Hr . to: . 325 L / Hr
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Safety Car
Joined: Nov 2007
Posts: 4,433
Likes: 873
From: Bay Area CA
Maximum LS3 Fuel Pump Flow with Installed Boost-A-Pump
_______________________________
Increases Pump Voltage From: . . . . . 13.5 Volts . to: . 17.5 Volts . .(Only When Above 4 PSI Boost)
. . . . . - Resulting In -
Increased Pump Flow From: . . . . . . . 225 L / Hr . to: . 325 L / Hr
_______________________________
Increases Pump Voltage From: . . . . . 13.5 Volts . to: . 17.5 Volts . .(Only When Above 4 PSI Boost)
. . . . . - Resulting In -
Increased Pump Flow From: . . . . . . . 225 L / Hr . to: . 325 L / Hr
Do you by chance have the C6 Z06 fuel pump flow numbers with BAP? I believe the Z06 fuel pump flows 260 lph at 13.5 volts, but not sure at 17.5 volts with BAP. Fuel pressure should be tested at 58 psi.
Last edited by Mike's LS3; Oct 24, 2020 at 11:57 AM.
Race Director
Joined: Mar 2011
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From: SW Florida
2021 C6 of the Year Finalist - Modified
Some folks might say that over-voltage to the pump will shorten the pumps life, but it only receives over-voltage during boost (I use a 4.0 PSI Hobbs switch, so it only activates the BAP above 4.0 PSI boost). In my case, I'm not above 4.0 PSI boost all that often ... and just for a short period of time.
Safety Car
Joined: Nov 2007
Posts: 4,433
Likes: 873
From: Bay Area CA
I sure don't .... But the car's fuel pump will still keep the fuel pressure at 58 PSI at the injectors whether it's being supplied with 13.5 or 17.5 volts (it's only the max flow that increases with the increased voltage).
Some folks might say that over-voltage to the pump will shorten the pumps life, but it only receives over-voltage during boost (I use a 4.0 PSI Hobbs switch, so it only activates the BAP above 4.0 PSI boost). In my case, I'm not above 4.0 PSI boost all that often ... and just for a short period of time.
Some folks might say that over-voltage to the pump will shorten the pumps life, but it only receives over-voltage during boost (I use a 4.0 PSI Hobbs switch, so it only activates the BAP above 4.0 PSI boost). In my case, I'm not above 4.0 PSI boost all that often ... and just for a short period of time.
I running the Z06 fuel pump and the BAP kicks in at 3 or 4 psi. As a precaution, when I go into boost I make sure I have at least 1/4 tank of fuel to keep the fuel pump cool.
Race Director
Joined: May 2004
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From: Raleigh, NC
St. Jude Donor '15
Here are some pics from installing mine with the racetronix harness. Do not do it without the harness. Apologies as it's from a pretty long time ago and I didn't take a ton of pictures but maybe they'll help:
https://www.corvetteforum.com/forums...post1588579334
https://www.corvetteforum.com/forums...post1588579334