Advice Needed on Fuel set up for 500+ RWHP

95 Silver TA · 01-07-2003, 10:42 AM

Hey guys Your Advice and Your Opinion is Needed.,,
My 95 TA currently has a 383 with approx 9:1 comp, LT Headers, a 2 core Intercooler mounted in the nose of my TA, cc305 cam and a Borla exhaust. My heads and intake are completely stock except for new valve springs to accommodate the cc305 cam.
I am planning on using a 15# pulley on my P1SC Procharger (12 Ribbed Belt setup). I only plan to spin the motor to 5800rpms. My blower will see about 54,000rpms but it does have a redline of 62,000rpms (so my blower is not maxing out and I will probably see around 10 psi on the intake side)
I have an Rebuilt A4 Tranny with a Shift Kit, Vig TC, BM Supercooler and kevlar Clutch/Bands....I know it wont last that long but I plan to keep the car off the Track till I can afford a new Better more stouter Tranny.
Anyways....I was told with this set up I should hit 500-550 REAR wheel HP on my car. I plan on having Bryan at PCMforless or Shalin Patel personally tune the car (Not mail order tuning) I was planning on getting the following to supply fuel to my car:

1. 50# MSD Injectors
2. Walboro 255LPH Intank Fuel Pump (I already have this in my car....It's the High Pressure High Volume pump Model # 340)
3. Mabee get a Adjustable Boost Sensitive Fuel Pressure Regulator.

Would this set up be enough Fuel for 550 Rear Wheel HP?
Is my HP number realistic or am I off by a Lot?

Any and all advice is Greatly appreciated.
Thanks,
Claude

97TA-WS6-Con · 01-07-2003, 11:48 AM

Hey Claude

I saw your email this morning. I'll reply here.

I think you will be OK although you are approaching the threashold with respect to fuel, based on my experience. The 50's are the right sized injector and I think the HP target is reasonable and achievable.

Should the fuel pressure plummet under boost then as far as I can tell here are the following options in order of price, convenience and affectiveness.

1. get the Racetronic wiring harness, that will help get some extra juice to the pump - about $100 upgrade.
2. boost-a-pump - about $300.
3. External 1000 HP pump - about $300 I think
4. dual intank from Racetronic - about a $400 upgrade.

At this point I think I would give it a go and 'fix' it IF you have a problem. I went with the dual in tank. I was running out of fuel with the Walbro 340M with 15# on a 383 at about 4800 rpms and about 500 rwhp at the time.

95 Silver TA · 01-07-2003, 12:38 PM

Shaun,
Thanks for replying. I really appreciate it.

Did you have any sort of hard wiring to the pump when you had your 340 hooked up?

Did you Fuel Pressure drop off?

Where you using a Boost sensative fuel Pressure Regulator?

Finaly, How reliable is the Dual Intank Set up for Everyday Street use? (I drive my car almost everyday and want something that will be reliable enough to where I can still drive it 450-500 miles weekly

95 Silver TA · 01-13-2003, 02:49 PM

TTT

Does anyone else have any good or bad experience with 50# injectors and 255LPH intank pump they want to share?

At this point I think the Boost A Pump may be the route to go...

Highlander · 01-13-2003, 03:32 PM

A tired pump will cease as soon as you use the boost a pump...

Go with racetronix setup for lt1 and use the GSS340... I received my package today... AWESOME.. .you can always installe the boost a pump later without any problems...

I think you can deal without the boost a pump for 550rwhp or so...

97TA-WS6-Con · 01-13-2003, 03:48 PM

Quote:

Originally posted by 95 Silver TA
Shaun,
Thanks for replying. I really appreciate it.

Did you have any sort of hard wiring to the pump when you had your 340 hooked up?

Did you Fuel Pressure drop off?

Where you using a Boost sensative fuel Pressure Regulator?

Finaly, How reliable is the Dual Intank Set up for Everyday Street use? (I drive my car almost everyday and want something that will be reliable enough to where I can still drive it 450-500 miles weekly

No extra wiring, i just dropped it in.

Yes, big time. Pressure built from about 50 to 60 and then plunged to 40 at about 8 lbs of boost or so.

I assume it to be street friendly. I specifically bought it so that it would be quit. Not that the rest of the car is not already real loud.

95 Silver TA · 01-13-2003, 03:51 PM

Quote:

Originally posted by The Highlander
[B

Go with racetronix setup for lt1 and use the GSS340... I received my package today... AWESOME.. .you can always installe the boost a pump later without any problems...

I think you can deal without the boost a pump for 550rwhp or so... [/b]

thank You for replying....

I currently have the GSS340 Walboro Intank Pump without the Racetronics wiring kit. They wanted like 110.00 Shipped just for the wiring harness. I dont know if that is a fair price for a wiring kit that raises voltage to the pump to 1 volt and a few amps. I do know its a nice piece, however 110.00 shipped (mabee not that nice). I think I can just run a 5 dollar 10 gauge wire from my battery to the relay for the pump and Possibly get a .5 volt increase (For only 5 bucks).

Do you see my Point about the wiring harness from RaceTronics or Is that Wiring Harness THAT good?

Is it worth the 110.00 shipped? Will it really make that much of a difference?

Highlander · 01-13-2003, 03:54 PM

RSkrause is using 75# injectors and 3 95's in the super FMU...

He uses... a bosch 255lph and a boost a pump... he pumps out 750rwhp... so I dont see why with the racetronix setup harness you cant reach the 500rwhp mark

Highlander · 01-13-2003, 03:57 PM

I said the same thing you said now... but, somehow they got great reputation...

I got the setup today... YOu have to see that harnes... is awesome...

Quality is superb... I'd say it is worth it...

It comes with the relay too and it is setup that if you want to put the pump booster its a plug and play stuff...

I know what you mean though... But I'd spend the extra $ on a quality product that is backed up with their excellent costumer support...

95 Silver TA · 01-13-2003, 04:03 PM

Quote:

Originally posted by The Highlander
I said the same thing you said now... but, somehow they got great reputation...

I got the setup today... YOu have to see that harnes... is awesome...

Quality is superb... I'd say it is worth it...

It comes with the relay too and it is setup that if you want to put the pump booster its a plug and play stuff...

I know what you mean though... But I'd spend the extra $ on a quality product that is backed up with their excellent costumer support...

Cool...I did not know the piece was as good as you are saying.

I think I will give them a call and have them explain the (pump booster Option) I assume they sell that too.

Thanks again Guys...Your responses are Much appreciated!
Claude

Highlander · 01-13-2003, 04:14 PM

The kit comes (the complete pump kit) with everything that can be worn out, so you have a clean and new system for a lot of miles to come...

I saw the harness today and it looks so great that for me it is worth it big time.. I would certeinly buy again from them

to racetronix for such a good setup

Maldo · 01-15-2003, 09:16 AM

Hi Guys the wiring systems seems to be the ticket to get more voltage to the pump but, have any of you really seen the performance befit from doing this up grade when compared to running your own wiring. I understand the harness is top quality I am not questioning that But, I question the claims from racetronics that there wiring harness will increase the pump volume by 18% - 20% and 1.2 – 1.5 volts vs. a good wiring set up I can make up for about ¼ of the price.

Is there something I am missing? To me the 110 price tag is not worth it….. When I can make up my own … unless racetronics is using magic wiring ?

Also does someone have a good picture of there racetronics wiring harness?

thanks,

Jim

Camaro_SS/R · 01-15-2003, 12:42 PM

If you want something cheaper you can try the Voltblaster.

http://www.ramchargers.com/cgi-bin/n...890&cat2=26891

This use to be very popular but no one mention this any more. Some think it may damage the optispark, but I don't think there is any proof of this AFAIK. I had bought this 3 yrs back before Racetronix came out with their nice setup, and I have been very happy with this. This is very popular with the GN and other domestic hi-po cars. For me, it started out as a safety factor to make sure I have plenty of juice to my fuel pump.

89ProchargedROC · 01-15-2003, 02:00 PM

Quote:

Originally posted by Maldo
Hi Guys the wiring systems seems to be the ticket to get more voltage to the pump but, have any of you really seen the performance befit from doing this up grade when compared to running your own wiring. I understand the harness is top quality I am not questioning that But, I question the claims from racetronics that there wiring harness will increase the pump volume by 18% - 20% and 1.2 – 1.5 volts vs. a good wiring set up I can make up for about ¼ of the price. Is there something I am missing? To me the 110 price tag is not worth it….. When I can make up my own … unless racetronics is using magic wiring ?

Also does someone have a good picture of there racetronics wiring harness?

thanks,

Jim

Yes you could make up your own if you knew what to use. Jack is just selling it complete for people who cant. Just use a very good 40amp relay and some thick wiring.

mongse_1 · 01-15-2003, 05:04 PM

First, I would ditch the 2-core. You will have to fabricate a bracket to hold it into place like the one I did for a friend last weekend. It's a LOT easier w/ a 3-core.

I've heard bad things about the 50s. I'm not sure if they have a habit of locking up or if they just don't meet expectations. I've heard they're not the best choice from several people.

Also, I don't think Shalin Patel does tuning anymore...could be wrong, but I thought I read that somewhere this week.