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Old 05-21-2013, 12:36 PM   #41
Saad @ Saad Racing
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Here is a HPF fuel system I removed from a customer car, looks just like yours right? Notice how small the pick up is.
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Old 05-21-2013, 12:39 PM   #42
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Originally Posted by Saad @ Saad Racing View Post
No, that is a HPF fuel system. When you see the braided line it has a rubber liner, that is why I said rubber line. Notice all the 90 degree fittings. Where I said it has a -3 pickup, that is the size of a drinking straw.

The black ones look braided to me, maybe I'm looking at the wrong ones.

What about the parallel system?
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Old 05-21-2013, 01:19 PM   #43
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Well you dont have to put it in the trunk there is plenty of space around the carbon fuel fume filter.
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Old 05-21-2013, 01:21 PM   #44
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Originally Posted by imapimp View Post
The black ones look braided to me, maybe I'm looking at the wrong ones.

What about the parallel system?

Didn't we have fuel pressure issues when you had it here??

ALso I believe that this is the car that came from HPF with absolutely NO TUNE in it!! It barely ran! The a/f's were pegged at 9.0 almost all of the time!
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Old 05-21-2013, 01:23 PM   #45
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Damn sorry to hear that....


last few M3s that blew up/lifted heads were ProEFI cars....ill wait on the switch lil more I think...
Lifting the head has NOTHING to do with the EMS other than the fact that the car in question is making a ton of power. I believe that almost all of the highest HP M3s run a ProEFI so if you are going to lift a head.... well you do the math!!
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Old 05-21-2013, 03:14 PM   #46
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Originally Posted by Saad @ Saad Racing View Post
Here is a HPF fuel system I removed from a customer car, looks just like yours right? Notice how small the pick up is.
Now I see it better. What was in the tank of that customer's car?

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Originally Posted by Sound Performance View Post
Didn't we have fuel pressure issues when you had it here??

ALso I believe that this is the car that came from HPF with absolutely NO TUNE in it!! It barely ran! The a/f's were pegged at 9.0 almost all of the time!
Yeah that is on the original post Larry Never heard from you either, not sure if you got my messages or email?

Anyways, I am not trying to defend HPF in any way. Just trying to get the facts straight and see for myself and others with the same fuel issue what needs to be done to the existing system to make it up to par. Then, it would be up to each person to decide what their best option is.
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Old 05-21-2013, 03:31 PM   #47
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Look at the picture I posted. Do you see how the two sides join into the T block? Then they go on to enter the rail at one point. That is not a parallel system.
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Old 05-21-2013, 03:41 PM   #48
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I believe the factory fuel pump was in the tank which is fine if you let it run on its own line and not T into it. There is only one way to make a proper fuel system, that's the correct way, the HPF system is not right and you need to start over not repair it. Any fuel system that enters the rail on one end of a straight 6 is wrong right from the start, just another FYI. We enter from both sides with the parallel systems.

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Now I see it better. What was in the tank of that customer's car?



Yeah that is on the original post Larry Never heard from you either, not sure if you got my messages or email?

Anyways, I am not trying to defend HPF in any way. Just trying to get the facts straight and see for myself and others with the same fuel issue what needs to be done to the existing system to make it up to par. Then, it would be up to each person to decide what their best option is.
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Old 05-21-2013, 03:53 PM   #49
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Originally Posted by Saad @ Saad Racing View Post
I believe the factory fuel pump was in the tank which is fine if you let it run on its own line and not T into it. There is only one way to make a proper fuel system, that's the correct way, the HPF system is not right and you need to start over not repair it. Any fuel system that enters the rail on one end of a straight 6 is wrong right from the start, just another FYI. We enter from both sides with the parallel systems.
Now I understand thanks
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Old 05-21-2013, 07:50 PM   #50
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Now I see it better. What was in the tank of that customer's car?



Yeah that is on the original post Larry Never heard from you either, not sure if you got my messages or email?
I only heard that you want to get it back on the dyno and finish the tune. Just give us a call and schedule it!
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Old 05-22-2013, 11:07 AM   #51
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Thanks for the reply.

And I agree with your view of safety first.

Is there a presumption a surge tank needs to be in the trunk? Considering the safety issue, it makes more sense for it to be fit elsewhere.

Finally, considering the reason for putting it in, there must be a better solution like modifying the fuel pickups. Perhaps we are both on the same page on this one. Is that the type of strategy your fuel system takes?


Quote:
Originally Posted by Saad @ Saad Racing View Post
In my opinion its always safety first. To put a surge tank full of gasoline in your trunk, in the M3 that would put it in the passenger compartment, is not safe in a street car. If you are rear ended and the tank or line ruptures the fuel is now in the car with you. In the factory set up, if it ruptures, its outside of the car. This could be the difference of you getting out or not. Not worth it to me for a street car. Everyone can make there own decision. Plus you loose storage space
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Old 05-22-2013, 11:26 AM   #52
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The black ones look braided to me, maybe I'm looking at the wrong ones.

What about the parallel system?
It is rubber hose underneath the black braid. It will fail with E85. Needs to be Teflon or stainless tubing.
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Old 05-22-2013, 12:47 PM   #53
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Does not have to be in the trunk but where else are you going to find room for a tank and lines coming in and out of it on a street car? Don't want it under the hood for heat and saftey reasons. Only other place I can think of on a M3 would be under the rear bumper, but you would deal with a lot of exhaust heat and it could blow up like a Pinto if you get rear ended

The idea of using it is so you have always have fuel available during hi G's. As long as your fuel system is working properly and siphoning to the pickup side you will be ok. Just don't run the car low on gas.

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Thanks for the reply.

And I agree with your view of safety first.

Is there a presumption a surge tank needs to be in the trunk? Considering the safety issue, it makes more sense for it to be fit elsewhere.

Finally, considering the reason for putting it in, there must be a better solution like modifying the fuel pickups. Perhaps we are both on the same page on this one. Is that the type of strategy your fuel system takes?
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Old 05-30-2013, 08:57 PM   #54
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Re: HPF Fuel issue (Out of Gas at 1/4 Tank---Fuel Cutoff at 6k)

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Hpf fuel system is useless once u r @ 1/2 of the tank .
I tested this and you are right! Car sputters past 6k when the fuel is under 1/2 tank but when I filled it over the 1/2 way mark, my car ran like a champ past 6k, delivering full power... looks like I need to find a new fuel system and ditch the HPF one

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Old 05-30-2013, 11:12 PM   #55
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I tested this and you are right! Car sputters past 6k when the fuel is under 1/2 tank but when I filled it over the 1/2 way mark, my car ran like a champ past 6k, delivering full power... looks like I need to find a new fuel system and ditch the HPF one

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Old 05-31-2013, 10:41 AM   #56
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I am having a similar issue, running out of gas at 1/4 sometimes 1/3 tank with my car with the SADD fuel system, SP is suppose to be working with you guys on figuring it out, haven't heard back from them yet though..
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Old 05-31-2013, 12:18 PM   #57
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I am having a similar issue, running out of gas at 1/4 sometimes 1/3 tank with my car with the SADD fuel system, SP is suppose to be working with you guys on figuring it out, haven't heard back from them yet though..
The SAAD fuel system will provide proper fuel to the engine but that's only if there is fuel to feed.. Under hard acceleration or hard turns the fuel is going to slosh to one side and leave the pickup dry. The best way to prevent this is by running a surge tank setup like Kenton just installed in conjunction with your existing fuel setup.

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Old 06-01-2013, 11:03 AM   #58
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The SAAD fuel system will provide proper fuel to the engine but that's only if there is fuel to feed.. Under hard acceleration or hard turns the fuel is going to slosh to one side and leave the pickup dry. The best way to prevent this is by running a surge tank setup like Kenton just installed in conjunction with your existing fuel setup.
Exactly when you need it doesn't work
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Old 06-03-2013, 01:06 PM   #59
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Exactly when you need it doesn't work
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Old 06-03-2013, 04:18 PM   #60
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Our system does not change the way the car siphons fuel from one tank to the other. If you ran out of fuel at a 1/4 tank that is because the factory set up failed, not our fuel kit. That part of the factory fuel system is untouched.

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I am having a similar issue, running out of gas at 1/4 sometimes 1/3 tank with my car with the SADD fuel system, SP is suppose to be working with you guys on figuring it out, haven't heard back from them yet though..
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