anyone try the MSD Fuel Pump Voltage Booster?
#1
anyone try the MSD Fuel Pump Voltage Booster?
this unit from MSD will raise the voltage to the fuel pump so it will supply more fuel flow... also has a vaccuum hose attached so it knows when its on boost to turn it on... just wondering if anyone has tried this yet so far.
thanks for any input,
Cheston
thanks for any input,
Cheston
#6
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GSS342HP pump at 70psi
@12v 46gph ~460whp
@13.5v 56gph ~ 550whp
@16.5v 73gph ~750whp
Keep in mind that this is at the pump head flow and under perfect conditions. But as you can see voltage makes a huge difference. You should also upgrade the wiring that runs to the pump power and ground. Running 16.5v to the pump will shorten its life so the booster uses a boost pressure switch to turn the booster on when intake manifold sees boost. Another concern is say your racing at night, lights on stereo cranking your fuel pump might not be seeing 14.6v, or even 13.5v it could be lower and pump flow will suffer. This is a good reason to justify the fuel pump voltage booster.
@12v 46gph ~460whp
@13.5v 56gph ~ 550whp
@16.5v 73gph ~750whp
Keep in mind that this is at the pump head flow and under perfect conditions. But as you can see voltage makes a huge difference. You should also upgrade the wiring that runs to the pump power and ground. Running 16.5v to the pump will shorten its life so the booster uses a boost pressure switch to turn the booster on when intake manifold sees boost. Another concern is say your racing at night, lights on stereo cranking your fuel pump might not be seeing 14.6v, or even 13.5v it could be lower and pump flow will suffer. This is a good reason to justify the fuel pump voltage booster.
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#9
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It's a quick and dirty way of increasing fuel flow. Only problem, is that MSD product is notorious unreliable. I personally will never use MSD on my car, or a customer's car. In the domestic word, and Honda world, MSD components are always breaking down, and driving people nuts with trouble shooting.
I think I mild increase in pump voltage is safe, as long as you are keeping fuel pressure at a reasonable level.
I think I mild increase in pump voltage is safe, as long as you are keeping fuel pressure at a reasonable level.
#10
the burninator
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my voltage is just being boosted from 12 to 13-13.5 volts or something around there. It only kicks in at a certain PSI of boost and it's just a temporary fix for now. I try to keep at least a 1/4 tank of gas in the tank just to make sure the fuel pump is sitting in some fuel to keep it cool
I'm pretty sure there's something wrong with my fuel pump assembly though and am waiting on phunk's twin pump assembly so I can see if that solved my fuel pressure issues. I don't want to buy a stock pump assembly and redo it all. I'd rather upgrade it to something I know works and is better
my goal is to not need the booster pump at all though
I'm pretty sure there's something wrong with my fuel pump assembly though and am waiting on phunk's twin pump assembly so I can see if that solved my fuel pressure issues. I don't want to buy a stock pump assembly and redo it all. I'd rather upgrade it to something I know works and is better
my goal is to not need the booster pump at all though
Last edited by sentry65; 01-14-2007 at 11:05 AM.
#11
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Since they only run when you are in boost, the loss of pump life for street cars is very negligible. For a road race car it would be a different story.
Kenne Bell makes the most widely used fuel pump voltage booster called the Boost-A-Pump. I used the their Boost-A-Spark on my Maxima to overcome some spark issues, worked like a champ!
http://www.kennebell.net/accessories...boostapump.htm
I personally used this one on my Maxima, its cheaper but on all the time. Worked fine. http://cgi.ebay.com/ebaymotors/FLOWC...QQcmdZViewItem
For the ~550whp folks its a good investment, after that spend the money on the twin pump in tank systems.
Kenne Bell makes the most widely used fuel pump voltage booster called the Boost-A-Pump. I used the their Boost-A-Spark on my Maxima to overcome some spark issues, worked like a champ!
http://www.kennebell.net/accessories...boostapump.htm
I personally used this one on my Maxima, its cheaper but on all the time. Worked fine. http://cgi.ebay.com/ebaymotors/FLOWC...QQcmdZViewItem
For the ~550whp folks its a good investment, after that spend the money on the twin pump in tank systems.
Last edited by MardiGrasMax; 01-14-2007 at 11:05 AM.
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This is a quick fix way to get more HP out of your existing pump.I believe VRT used this on one of their cars. Or was it JWT?I cant remember, but someone had tried a similar set up..
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Originally Posted by Sharif@Forged
Only problem, is that MSD product is notorious unreliable. I personally will never use MSD on my car, or a customer's car. In the domestic word, and Honda world, MSD components are always breaking down, and driving people nuts with trouble shooting.
.
.
MSD is a very reputable company, and they would not be in business for over 30+ years if their products failed as you say they do.
MSD will be around long after you and I are gone.
http://www.msdignition.com/1msdhistory.htm
#15
the burninator
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My mechanic saw that the C6 APS TT kit uses a booster pump when he was installing one and was immediately skeptical.
So he called up APS and asked them what's the deal with them and if they're reliable because it seemed like a fishy part for APS to endorse using in one of their kits.
They said they've been great and reliable in their testing...but not that APS's findings or opinions necessarily mean anything
So he called up APS and asked them what's the deal with them and if they're reliable because it seemed like a fishy part for APS to endorse using in one of their kits.
They said they've been great and reliable in their testing...but not that APS's findings or opinions necessarily mean anything
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Originally Posted by sentry65
My mechanic saw that the C6 APS TT kit uses a booster pump when he was installing one and was immediately skeptical.
So he called up APS and asked them what's the deal with them and if they're reliable because it seemed like a fishy part for APS to endorse using in one of their kits.
They said they've been great and reliable in their testing...but not that APS's findings or opinions necessarily mean anything
So he called up APS and asked them what's the deal with them and if they're reliable because it seemed like a fishy part for APS to endorse using in one of their kits.
They said they've been great and reliable in their testing...but not that APS's findings or opinions necessarily mean anything
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As an electrical engineer I can tell you that upping the voltage on any electric motor will reduce it's life time. Whether it's a DC brushless, brush, or commutator type motor, when you up the voltage you will reduce it's life span.
Upping the voltage = upping the current for the same impedance winding in the motor. Since it's a moving part there is also a frequency dependant part, and when you up the current the frequency the motor spins at goes up (giving you the higher fuel flow, and higher pressure at lower motor speeds as the force in the motor goes up with current, where the torque of the motor is greatest at 0 rpm) When you get too high a frequency (rpm) you can run into issues with voltage spikes, etc as you pass over the commutator, etc (when you disconnect the motor winding you get a voltage spike, more current + faster disconnect on the commutator = larger voltage spike) which can wear down the commutator faster. Also more current = higher heat -> motor winding insulation (usually enamel coating) wears out faster, when it wears out you get a short in the winding = no work no more. Of course a fuel pump shouldnt have a commutator in it as you dont want any sparks.. lol but then you have to have a controller to control which coil turns on when, and upping the voltage on those components will wear the out faster, and even if there is a voltage regulator infront of the control electronics, upping the voltage on it will reduce it's lifetime as well. There are other factors as well involving more complex parts of the electronics but I wont go into it.
Bottom line: increasing the voltage beyond designed specs will reduce the lifetime of the motor -> reduced pump life.
Upping the voltage = upping the current for the same impedance winding in the motor. Since it's a moving part there is also a frequency dependant part, and when you up the current the frequency the motor spins at goes up (giving you the higher fuel flow, and higher pressure at lower motor speeds as the force in the motor goes up with current, where the torque of the motor is greatest at 0 rpm) When you get too high a frequency (rpm) you can run into issues with voltage spikes, etc as you pass over the commutator, etc (when you disconnect the motor winding you get a voltage spike, more current + faster disconnect on the commutator = larger voltage spike) which can wear down the commutator faster. Also more current = higher heat -> motor winding insulation (usually enamel coating) wears out faster, when it wears out you get a short in the winding = no work no more. Of course a fuel pump shouldnt have a commutator in it as you dont want any sparks.. lol but then you have to have a controller to control which coil turns on when, and upping the voltage on those components will wear the out faster, and even if there is a voltage regulator infront of the control electronics, upping the voltage on it will reduce it's lifetime as well. There are other factors as well involving more complex parts of the electronics but I wont go into it.
Bottom line: increasing the voltage beyond designed specs will reduce the lifetime of the motor -> reduced pump life.
Last edited by shushikiary; 01-15-2007 at 10:31 AM.
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Originally Posted by shushikiary
As an electrical engineer I can tell you that upping the voltage on any electric motor will reduce it's life time. Whether it's a DC brushless, brush, or commutator type motor, when you up the voltage you will reduce it's life span.
Upping the voltage = upping the current for the same impedance winding in the motor. Since it's a moving part there is also a frequency dependant part, and when you up the current the frequency the motor spins at goes up (giving you the higher fuel flow, and higher pressure at lower motor speeds as the force in the motor goes up with current, where the torque of the motor is greatest at 0 rpm) When you get too high a frequency (rpm) you can run into issues with voltage spikes, etc as you pass over the commutator, etc (when you disconnect the motor winding you get a voltage spike, more current + faster disconnect on the commutator = larger voltage spike) which can wear down the commutator faster. Also more current = higher heat -> motor winding insulation (usually enamel coating) wears out faster, when it wears out you get a short in the winding = no work no more. Of course a fuel pump shouldnt have a commutator in it as you dont want any sparks.. lol but then you have to have a controller to control which coil turns on when, and upping the voltage on those components will wear the out faster, and even if there is a voltage regulator infront of the control electronics, upping the voltage on it will reduce it's lifetime as well. There are other factors as well involving more complex parts of the electronics but I wont go into it.
Bottom line: increasing the voltage beyond designed specs will reduce the lifetime of the motor -> reduced pump life.
Upping the voltage = upping the current for the same impedance winding in the motor. Since it's a moving part there is also a frequency dependant part, and when you up the current the frequency the motor spins at goes up (giving you the higher fuel flow, and higher pressure at lower motor speeds as the force in the motor goes up with current, where the torque of the motor is greatest at 0 rpm) When you get too high a frequency (rpm) you can run into issues with voltage spikes, etc as you pass over the commutator, etc (when you disconnect the motor winding you get a voltage spike, more current + faster disconnect on the commutator = larger voltage spike) which can wear down the commutator faster. Also more current = higher heat -> motor winding insulation (usually enamel coating) wears out faster, when it wears out you get a short in the winding = no work no more. Of course a fuel pump shouldnt have a commutator in it as you dont want any sparks.. lol but then you have to have a controller to control which coil turns on when, and upping the voltage on those components will wear the out faster, and even if there is a voltage regulator infront of the control electronics, upping the voltage on it will reduce it's lifetime as well. There are other factors as well involving more complex parts of the electronics but I wont go into it.
Bottom line: increasing the voltage beyond designed specs will reduce the lifetime of the motor -> reduced pump life.
#19
the burninator
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yeah I have absolutely no doubt it reduces the life of the pump, but I think just about everything I've done to my car has reduced the life of something or at least the engine, tires, and transmission.
still though, it's only reducing the life of the pump once you reach what psi you set it at to start kicking in at. It's all going to depend on how often and hard you go WOT. Walbros are cheap anyway
still though, it's only reducing the life of the pump once you reach what psi you set it at to start kicking in at. It's all going to depend on how often and hard you go WOT. Walbros are cheap anyway
#20
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Originally Posted by sentry65
yeah I have absolutely no doubt it reduces the life of the pump, but I think just about everything I've done to my car has reduced the life of something or at least the engine, tires, and transmission.
still though, it's only reducing the life of the pump once you reach what psi you set it at to start kicking in at. It's all going to depend on how often and hard you go WOT. Walbros are cheap anyway
still though, it's only reducing the life of the pump once you reach what psi you set it at to start kicking in at. It's all going to depend on how often and hard you go WOT. Walbros are cheap anyway