racetronix users....
Thread Starter
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Originally Posted by Busa196
Mine is at 60-61 at idle, then drops to 50-52 at WOT 
WTF? It basically does the exact same thing my stock pump did.
WTF? It basically does the exact same thing my stock pump did.change your fuel filter. The filter contains the fuel pressure regulator. If you are losing pressure you may have a blockage. I gained 2 psi across the board. From what I am reading 54-56# is normal at WOT.
Melting Slicks
Joined: Dec 2002
Posts: 3,296
Likes: 30
From: Friendswood, Tx
Originally Posted by ICULUKN-C5
change your fuel filter. The filter contains the fuel pressure regulator. If you are losing pressure you may have a blockage. I gained 2 psi across the board. From what I am reading 54-56# is normal at WOT.
Drifting
Joined: Mar 2004
Posts: 1,291
Likes: 0
From: Shavertown PA
Originally Posted by Racetronix
What voltage are you running under idle / normal driving conditions?
Thread Starter
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Originally Posted by z06cab
What is the pressure of a stock system??
With a blower setup, what #'s would be needed?
With a blower setup, what #'s would be needed?
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Thread Starter
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Originally Posted by RoadRebel
Ive run well over 500 to the tires with 42 lb/hr injectors on the stock pump many times.
Phil
Phil
My Head and Cam N2O car made 560 RWHP on the stock pump.
Melting Slicks
Joined: Nov 2002
Posts: 2,289
Likes: 29
From: Pearland Tx
yo..
I would think that the first restriction would be the filter sock on the inside of the gas tank. Bad thing is the kit does not come with one !
When I helped "Busa" install his pump we wanted to change it out with a new one and GM's part department told us you would have to buy the whole fule pump assembly for $500.00 So with no choice we had to put the old one back in but I think that this should be included in the kit or at least offerd by the seller when you buy the pump.
If your car is newer with less miles dont change it, but if it has some miles on it I would say change it while you can "why do it twice".
I had my stock fuel pump all the way up until I made 575rwhp and then I added a "BAP" to it and now I am at 640rwhp with no fuel issues with a 150 TNT shot..
I may be wrong but I dont think that the demand on the fuel pump when you spray is as demanding as it is when you have a blower
When I helped "Busa" install his pump we wanted to change it out with a new one and GM's part department told us you would have to buy the whole fule pump assembly for $500.00
So with no choice we had to put the old one back in but I think that this should be included in the kit or at least offerd by the seller when you buy the pump.If your car is newer with less miles dont change it, but if it has some miles on it I would say change it while you can "why do it twice".
I had my stock fuel pump all the way up until I made 575rwhp and then I added a "BAP" to it and now I am at 640rwhp with no fuel issues with a 150 TNT shot..
I may be wrong but I dont think that the demand on the fuel pump when you spray is as demanding as it is when you have a blower
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Originally Posted by big bollas
I would think that the first restriction would be the filter sock on the inside of the gas tank. Bad thing is the kit does not come with one !
When I helped "Busa" install his pump we wanted to change it out with a new one and GM's part department told us you would have to buy the whole fule pump assembly for $500.00
When I helped "Busa" install his pump we wanted to change it out with a new one and GM's part department told us you would have to buy the whole fule pump assembly for $500.00
I recently ordered the fuel level sensor, and to my surprise - This came with a SOCK also...?? And to TOP it off - Racetronixs now sells them also, and when i recieved a replacement pump - sure enough, they sent me a sock with it.
So i went from having NONE, to 3
Melting Slicks
Joined: Dec 2002
Posts: 3,296
Likes: 30
From: Friendswood, Tx
Originally Posted by ICULUKN-C5
Racetronix includes a new filter sock with their pump now 
. From what I am told, they have been including it for the past 3-4 months.
. From what I am told, they have been including it for the past 3-4 months.
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Originally Posted by ICULUKN-C5
Racetronix includes a new filter sock with their pump now . From what I am told, they have been including it for the past 3-4 months.
. From what I am told, they have been including it for the past 3-4 months.
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
C5 Return fuel system infomation
It has been brought to our attention that people converting their C5's to a FM FPR have been leaving out a few parts which are key to the proper operation of the system.
One key component that some people have been leaving out is the RR fuel feed hose with checkvalve. Seeing as a C5 does not have a checkvalve in the stem of the fuel pump it is imperative that this line is used in order to keep pressure in the system for startup purposes. Without this checkvalve the system pressure will bleed back to the tank when the car / pump is shut off. This can cause hard start / longer crank to run times.
GM P/N 10413424 Item 33 in > this PDF <
One key component that some people have been leaving out is the RR fuel feed hose with checkvalve. Seeing as a C5 does not have a checkvalve in the stem of the fuel pump it is imperative that this line is used in order to keep pressure in the system for startup purposes. Without this checkvalve the system pressure will bleed back to the tank when the car / pump is shut off. This can cause hard start / longer crank to run times.
GM P/N 10413424 Item 33 in > this PDF <
