Ive been getting alot of questions lately regarding fuel systems, with all the new engine builds and owners reaching for the 650+ whp area there is definitely a need for a real fuel system solution. Im going to lay out what I think based on my experience:
Voltage boosters: Yes these work, I have used them occasionally for vehicles needing just a little more fuel (like another 50whp worth). The stock system is good for 600-650whp at the absolute max. If your trying to achieve 750whp+ this is NOT a reliable option IMO. Its would be very silly to destroy a 10K motor because you wanted to save a thousand bucks on a fuel system.
External dual walbros inline with FMU: This is standard on some supercharger kits and does usually work for the intended horsepower of that kit. Throwing 100+ psi fuel pressure at stock injectors to make 700whp is definitely not the best option out there. Again if your trying to achieve 750whp+ this is NOT a reliable option IMO.
Dual/Triple Intank pumps or one large external pump: This is the only reliable option for the 750whp+ area. Unfortunately it is also the most expensive option, but for good reason. Stock parts are adequate for stock or near stock applications and these setups replace or modify all the stock parts for higher flow. I personally like the dual/triple walbro intank setup due to very little noise and the better fuel pickup point, plus walbros are usually more reliable and you have 2/3 pumps so if one does fail at least you can get home. There are some very nice external pumps as well, aeromotive, weldon, and magnafuel all make nice stuff, make 100% sure it is rated for constant use however as most of the bigger pumps are not.
Heres a breakdown of what your looking at cost wise for a dual/triple walbro setup:
For the dual intank pump setup with all hardware and relays it would be $480 plus shipping unless you want the rest of the fuel system. This would be two new pumps and everything that would be inside of the tank, plus the relays to power the pumps. There is a $200 refundable core charge on the stock canister assembly. Add $200 for triple pumps.
You would need a regulator, new feed and return line, filter, a ton of fittings, and rails (or modify your stock rails) to use this pump setup (or any new pump setup). I can modify a set of stock rails and powdercoat them (I have some in stock), those with the rest of the parts would be $835 total plus $100 core on the rails, plus the $480 and core ($200) on the pump setup. That would be 100% new, you would not reuse any of the current system except the injectors. Fittings are probably $300 of it, they add up very quick. All parts are the same or less in price than the major retailers.
Rail modifications are $175 of that with powdercoat. The stock inlet and crossovers have to be removed, one rail has to be shortened, and then fittings welded on, pressure tested, then preped and powdercoated.
Everything would be there except injectors for a 1000+ WHP fuel system.
If you wanted black hoses and fittings or all nickle plated fittings, I can do that too, but they are more expensive (about 20% more for the hose/fittings).
So:
$480 pump assembly, Add $200 for triple pumps.
$200 refundable core
$835 regulator/lines/modified rails/fittings/filter
$100 refundable core on rails
Total
$1315 parts, add $200 for triple pumps
$300 core charges
When Tony gets his rails finished those would be an excellent upgrade over the modded stock rails, especially for those looking for bling and the higher HP are (1000+).
Injectors are typically $600 and up for a set depending on size.
Justin
Voltage boosters: Yes these work, I have used them occasionally for vehicles needing just a little more fuel (like another 50whp worth). The stock system is good for 600-650whp at the absolute max. If your trying to achieve 750whp+ this is NOT a reliable option IMO. Its would be very silly to destroy a 10K motor because you wanted to save a thousand bucks on a fuel system.
External dual walbros inline with FMU: This is standard on some supercharger kits and does usually work for the intended horsepower of that kit. Throwing 100+ psi fuel pressure at stock injectors to make 700whp is definitely not the best option out there. Again if your trying to achieve 750whp+ this is NOT a reliable option IMO.
Dual/Triple Intank pumps or one large external pump: This is the only reliable option for the 750whp+ area. Unfortunately it is also the most expensive option, but for good reason. Stock parts are adequate for stock or near stock applications and these setups replace or modify all the stock parts for higher flow. I personally like the dual/triple walbro intank setup due to very little noise and the better fuel pickup point, plus walbros are usually more reliable and you have 2/3 pumps so if one does fail at least you can get home. There are some very nice external pumps as well, aeromotive, weldon, and magnafuel all make nice stuff, make 100% sure it is rated for constant use however as most of the bigger pumps are not.
Heres a breakdown of what your looking at cost wise for a dual/triple walbro setup:
For the dual intank pump setup with all hardware and relays it would be $480 plus shipping unless you want the rest of the fuel system. This would be two new pumps and everything that would be inside of the tank, plus the relays to power the pumps. There is a $200 refundable core charge on the stock canister assembly. Add $200 for triple pumps.
You would need a regulator, new feed and return line, filter, a ton of fittings, and rails (or modify your stock rails) to use this pump setup (or any new pump setup). I can modify a set of stock rails and powdercoat them (I have some in stock), those with the rest of the parts would be $835 total plus $100 core on the rails, plus the $480 and core ($200) on the pump setup. That would be 100% new, you would not reuse any of the current system except the injectors. Fittings are probably $300 of it, they add up very quick. All parts are the same or less in price than the major retailers.
Rail modifications are $175 of that with powdercoat. The stock inlet and crossovers have to be removed, one rail has to be shortened, and then fittings welded on, pressure tested, then preped and powdercoated.
Everything would be there except injectors for a 1000+ WHP fuel system.
If you wanted black hoses and fittings or all nickle plated fittings, I can do that too, but they are more expensive (about 20% more for the hose/fittings).
So:
$480 pump assembly, Add $200 for triple pumps.
$200 refundable core
$835 regulator/lines/modified rails/fittings/filter
$100 refundable core on rails
Total
$1315 parts, add $200 for triple pumps
$300 core charges
When Tony gets his rails finished those would be an excellent upgrade over the modded stock rails, especially for those looking for bling and the higher HP are (1000+).
Injectors are typically $600 and up for a set depending on size.
Justin
