INTENESS

iTrader: (4)

I have 2001 camaro with the racetronix kit and the hotwire,My fuel pressure at idle is 62 lbs but when im at full throttle it drops down to 50 lbs and stays there till I let off.Do I have a fuel pressure drop problem?I was under the asumption that it would stay rock solid or only lose a lb or 2 when full throttle.Car makes 500+rwhp on motor and I spray with a 150 shot.

Racetronix

iTrader: (2)

You are on the edge for a single in-tank system. The pressure drop is b/c of the HP level you are at and the location of the factory regulator.

INTENESS

iTrader: (4)

What fuel system or pump should i go with to give a safe amount of fuel?

Racetronix

iTrader: (2)

Racetronix / Lonnie's dual in-tank system.

Lonnies Performance

iTrader: (16)

Feel free to give me a call. I'll be glad to work with you on a fuel system to support your power goals.

INTENESS

iTrader: (4)

Thanx to the sponsers for replying to my ?But the ? still remains is it normal to have the pressure drop that Im having when going wide open throttle?

koolaid_kid

iTrader: (21)

No, it is not normal. You are correct to be concerned and should find a viable solution, such as the one offered by the sponsors.

INTENESS

iTrader: (4)

I know i might need to upgrade my fuel system but i want more peoples opiun on if my pressure sitation currently is normal or something to keep eye on?

RPOWU8

iTrader: (13)

My car does the same thing. Idles at 62psi, WOT 52lbs. I recently added 90 rwhp with my 418 LS3 and Fuel Pressure still does the same thing.

I think it is something to be aware of but my logs show that it is normal for my system. An upgraded system with larger pumps, lines fittings, and fuel rails would not show the same PSI drop. I would be concerned if the FP continued to drop as the load increases.

That said, it is always a good idea to have a good saftey margin especially with forced induction/ N20.

I have a pressure sender mounted on the fuel rail and check the pressure every once in a while.

My racetronics pump and hotwire kit seems to be meeting my needs for now.

If your going to add a 150 shot to a 500 RWHP, I don't think the racetronics pump is going to cut it. You need to make sure you have enough extra fuel for that N20 system. You don't want to run lean with the N20 on.


Just my .02

spaz1

iTrader: (9)

Not sure what you want to hear here.Yes it is normal for your fuel pressure to drop just tune around it and you'll be fine.... do you feel better now.

OF COURSE this is the wrong answer. You have to upgrade your fuel pump. setup. If you wanna run a boosta pump that will work or just go with a better fuel pump or possiby a dual intank setup.

INTENESS

iTrader: (4)

the orginal responses I got were no help to the ? I asked so I wanted other peoples thoughts on my sitation.I now no were I stand with this,and yes it does make me feel better knowledge is strength

Racetronix

iTrader: (2)

We did answer your question above. It is normal b/c of your fuel demands and the location of the factory regulator.

Racetronix

iTrader: (2)

It is not a case of opinion here. It is a known technical fact based on what the fuel system can support and what your motor's demands are. You are on the edge. A bit more and you will see much more drastic fuel pressure drop-off which is an indication your have totally tapped out your pump and the system has fallen out of regulation.

INTENESS

iTrader: (4)

Thank you again alright understood,I will start looking into upgrading my fuel system.

BLKNRDPREDATOR2001

iTrader: (1)

Mine idles the same just at wot drops completely to like 10lbs n is two months old wtf!!!