Got Me SOM

iTrader: (2)

I've been keeping an eye on my fuel pressure lately and i've never seen it drop to 40 before.

Is this fuel pump slowly crapping out on me or what? for the power level i'm making i've been told and have had other members tell me they're must be something seriously wrong with the pump. it has never been able to maintain constant pressure at high rpms.

i'm only 526 rwhp with forced induction.

just got a bap but i dont think this is be the solution.

do fuel pumps slowly fail or do they just crap out? i'm thinking about just putting a twin intank pump system in there now like double racetronix units that are plug n play.

anyone know how much max hp they can support/?

is it better to go with a twin walbro setup instead?

much questions i have!

Got Me SOM

iTrader: (2)

can anyone h elp a brother out?

think i am just going to replace the pump. meh

onfire

iTrader: (17)

Is it dropping to 40 under load or at idle? If it's at idle the pump is shot. If it's under load a bap might help bring it back, but it's dangerously low. With forced induction, I'd install a Lonnie's twin Racetronix pump set-up for safety and forget the bap.

Got Me SOM

iTrader: (2)

its doing it under load right at peak rpm, it holds sort of steady then when i get up in the higher rpms the pressure drops down.

onfire

iTrader: (17)

You're out of pump. If you already have a bap it could bandaid the problem since it ramps the voltage which will ramp the pump output.

Best fix is two pumps.

Got Me SOM

iTrader: (2)

gotcha, i gotta bap to throw on their to bandaid the problem for now, have to get that in.

but what sux is that it wont be enough to add a bottle too. so yea 2 pumps will be going in there then.

now my final question would be how much hp will the 2 racetronix pumps support? i only wanna do this one time so i wanna make sure its right if i gotta drop the exhaust and tank.

onfire

iTrader: (17)

The dual system has been up to 800rwhp....possibly could do more.

Nasty N8

iTrader: (33)

Do the lines and regulator at the same time to complete your system.

Nate

Frost

iTrader: (45)

MM did 995 RWHP with 2 and meth...

Got Me SOM

iTrader: (2)

I have supply and return lines and an aeromotive regulator along with fast fuel rails and 60 lb injectors already.

that little racetronix just can't keep up.

Do you make it so that I can automatically add the second pump with no problem?

That would be sweet if i can do that, it will save me money too. seems like my one pump is ok and not failing just can't keep up.

Nasty N8

iTrader: (33)

Looks like you are maxing out the one pump. It is not direct fit for the 2 pumps it is not easy to do you are better off selling the single pump and getting the 2 done. but that will add itself to your current setup nicely.

Nate

Got Me SOM

iTrader: (2)

Nate can you give me a price of the dual setup and what ever else I'll need?

Thank you.

Slowhawk

iTrader: (12)

The pump can't keep up. It's normal for an under pumped car. When the weather gets colder you'll see it drop even more.Put in a dual pump setup.

Frost

iTrader: (45)

I have pictures... this is not for everyone, but it's how I did mine. Maybe there is something here that could help you: https://ls1tech.com/forums/fueling-injection/615108-my-twin-walbro-s-01-t-pics-schizz.html

Racetronix

iTrader: (2)

Being FI you may be on the edge of what the single pump system can support.

Give Lonnie's a call. He has worked with MANY people on DP systems so he can give you straight goods on what you need so you don't waste your hard earned money. http://www.lonniesperformance.com/

Lonnies stocks all the parts to assemble your DP system quickly and professionally.

The Red WS.6

iTrader: (4)

Man this is about the same exact problem I've been facing Got me som. The hotwire kit didn't help much at all? When it gets to about 3k rpm fp goes to 50, quick. The weird thing was that the external pump woulden't stop pumping after I shut the car off. I had to dissconect the battery to make it stop. I figured with the racetronix and the external walbro it would have been enough because the stock pump began to have some problems so I got the racetronix good for 700 hp. wtf?

Racetronix

iTrader: (2)

There are straight forward answers and solutions to the fueling issues some people are having here. They are not because of pump failure but rather HP limitations and improper application. When building a high HP fuel system it would be best to speak with a Racetronix dealer or contact sales@racetronix.com with your HP support requirements. We can then make a recommendation that will support what you need and prevent you from spending unnecessary money.

Please do not rely on forum hearsay or competitor information when it comes to our PnP fuel systems as all too often it causes confusion and leads to improper buying decisions. Racetronix and our dealers are here to help you make things right the first time.

As a note in-line pumps are not to be used with the F99 bucket system.

The Racetronix harness is fused and designed to safely support one in-tank pump only. Running two pumps off of one fused circuit is dangerous. If you require support for two pumps we have a couple proper solutions for this as well as complete DP systems available through Lonnies.

Racetronix

iTrader: (2)

Got Me SOM,

Please contact Lonnie's Performance for DP system info :
http://www.lonniesperformance.com/

Lonnies assembles and bench tests all Racetronix DP systems. These systems are fully PnP and contain the best components available. Racetronix DP systems have been in operation since the 1990's supporting high HP levels.

There are many threads covering the Racetronix DP system such as this one:https://ls1tech.com/forums/showthrea...ght=racetronix

Don't get caught up in someone else's learning process only to end up with lesser results. Racetronix DP systems are proven, reasonably priced and top-quality.

Thanks for your consideration.

The Red WS.6

iTrader: (4)

I'm glad for the info racetronix. So far no one has had an awenser for me except you. I didn't put the two pumps together. A shop did it for me. I am not a mechanic and won't pretend to be one. I appreciate the info as I will ask the department for guidence. I belive an x-employee (of said shop) took me over for one in the pursuite of money. Also try and remeber that some of us don't know wtf we are doing in the effort for speed and get taken advatege of in the process. With that said I hope to solve my probelm as my stock pump and inline worked great for 5,000 miles and then I began to have problems. So I figured a racetronix intank pump (worth 700 hp)would do the job. This explanation makes sense and I thank you for the link. Not everyone is looking out for your best intrest you know?

Got Me SOM

iTrader: (2)

Thanks Racetronix,

I'll have to save some $$ to buy the dual setup. If anyone out there wants a single Racetronix pump out there let me know.