I have a 02 Z06, iron 408, P series procharger with 8 lbs of boost and 60lb injectors. I installed a Racetronix fuel pump(255), fuel rails and msd boost-a-pump. As my tuners were tuning we started loosing fuel pressure near the top end. They changed the fuel filter by my request as I don't know what could be in the tank even though there was only 8 hours of run time on the old one-no change. They replaced the in-tank 255 with another one and the old one was trashed (after 8 hours with full tank). Several back to back pulls later (up to 620wrhp) the fuel pressure started dropping(pump getting hot from putting 17V to it). The next morning it was fine.

OK-I do not want to run the pump with that much voltage so the boot-a-pump is out for now. They expect 675-700 rwhp when finished tuning. I am going to incorporate methanol but I don't want to tune it for that. From what I understand they installed a 2 bar sensor (don't understand it completely) in place of my MAF sensor and it would reduce some timing if the methanol ran out so they could tune for some methanol. I looked at a bunch of posts about the A1000 and I am concerned that what city driving I am doing that it could run hot and shorten the life. I have looked at the A&A kit and it seems OK but I am not sure. I do not want an in-tank pump (I like the new one for the later years but that won't work for a 02). My most concern is low fuel pressure because too many things that could go wrong with some systems. I do have a fuel pressure gauge with a small warning light. We are also going to a return style fuel system.
Thanks in advance for any help or ideas. Ken

 

Ive heard the MSD boost a pumps doesnt work right for some fuel pumps/system types and fries the in tank pumps. You might try a KB boost a pump instead. I threw 17 volts at my stock fuel pump for 35K miles and it was fine or at least didnt fry by that amount of miles anyway before going with external system for in boost which I should have done from the get go.

 

Must be that. This has been a 4 year project, so there wasn't any negative comments about the msd several years ago. Been talking to my tuners and I am near going with 1 A1000 or two of them.

 

You don't need an A1000. Be warned they're noisy. You go with stock in-tank with no BAP, plus a secondary external system from A&A or ECS that will support 900+rwhp reliably.

 

I would try one of the new Aeromotive 340's. Or two.

 

"Ive heard the MSD boost a pumps doesnt work right for some fuel pumps/system types and fries the in tank pumps"

I call on this one.

 

Straight from MSD themselves is :"The MSD Fuel Pump Booster Cannot Be Used On Pulse Modulated Fuel Systems Without A Return Line." And guess what happens if you do...yup fried fuel pump or booster or both.

So if the Op is using a non return style fuel system or a stock type return this might be the problem.

 

What your seeing is normal-the single pump/bap and your cubes just won't support the HP your looking for.

Methonal can used to help compensate but that's about all. You can put a return line on and you'll get another 75 rwhp on pump alone but then your done.

You should seriously consider a twin-intank setup such as RSI or Lonnies.

 

Was the A1000 pump that was noisy the in tank one or frame mounted? The one we used was not too bad once car was running. We have one for sale by the way if anyone interested .

 

Just used the stock fuel filter return.

 

My exhaust is so loud I probably won't hear the A1000 mounted on the frame with rubber pads between and I am adding butyl rubber and 1/4" neoprene foam sound insulation with a partition. Looks like the system is going to be a frame mounted A1000 with the suction side going right to the sump. A inline filter with changeable/cleanable element and a regulator with return. With the loss of HP from the drive train and the blower I might be using fuel to power 850 HP or more. I am concerned with too many things to go wrong in some systems. Cavitation is a concern for me with 2 pumps inline. Thanks for everyone's input.

 

It was frame mounted on a plate with rubber isolation bushings. Once the car is started and since it has B&B exhaust on it, you honestly can't hear it anyways.

 

You're right. You won't hear it.

I highly recommend you put a higher micron filter on the input to the pump. The A1000's won't put up with much trash on the input side before they quit and the Earl's high micron filters aren't that expensive compared to a new pump.

 

Go with what the man says he know his stuff here...

 

Thanks for all of your input. Ken

 

Well I had a return system and an MSD boost a pump and the dam thing still caught fire... (that is the boost a pump caught fire)