When will Works address this issue?
Originally posted by Zeus
Ah, much better response than just jokes... I knew it was hiding in there somewhere...
To my discredit, I mis-spoke or failed to mention that this seems to be an issue on cars with a few more mods...
So are you saying that both the P1 (which I run) and the sustained boost P2 have absolutely no need for an upgraded pump when running 3" exhausts and other basic bolt on's?
Ah, much better response than just jokes... I knew it was hiding in there somewhere...
To my discredit, I mis-spoke or failed to mention that this seems to be an issue on cars with a few more mods...
So are you saying that both the P1 (which I run) and the sustained boost P2 have absolutely no need for an upgraded pump when running 3" exhausts and other basic bolt on's?
-- DavidV
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From: MO
vishnu stage 1+ is border line on needing a upgraded pump. I believe shiv said it was not nessacery, but it was a good idea especially if you plan to get a stage 2. I have heard around 350whp is the cutoff, anything past that and the stock unit just isn't enough
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From: Danville/Blackhawk, California
Originally posted by DavidV@WORKS
But let's look at the facts. These are not stock Evos that are experiencing problems. These are also not WORKS tuned Evos. These are Evos tuned by other tuners. These tuners are now advocates of replacing the factory fuel pump. Why? Because otherwise the factory pump would b overtaxed with the tune that they are offering. D
But let's look at the facts. These are not stock Evos that are experiencing problems. These are also not WORKS tuned Evos. These are Evos tuned by other tuners. These tuners are now advocates of replacing the factory fuel pump. Why? Because otherwise the factory pump would b overtaxed with the tune that they are offering. D
Regards,
shiv
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From: NorCal
Originally posted by hotrod2448
I love how people can't get their point across with out being ignorant and insulting. If you have a problem with the way some one does business don't do business with them. Don't call people names, it just shows your ignorance.
I love how people can't get their point across with out being ignorant and insulting. If you have a problem with the way some one does business don't do business with them. Don't call people names, it just shows your ignorance.
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From: NorCal
Originally posted by DavidV@WORKS
Zeus,
On the one hand, I agree with you that a Walboro pump is cheap insurance if indeed there is an issue to be addressed. On the other hand, I first need to be convinced by compelling evidence that there is an issue in the first place.
Here is one way to go about ascertaining whether there is indeed an issue that needs to be addressed.
How many Evos exhibited signs of a fuel pump running at or beyond capacity?
If the answer is a that a handful of cars had this happen, the next question that needs to be asked is whether this is statistically significant among the thousands of Evos sold in North America.
Next, I would want to know whether these cars had anything in common or whether the sample was truly random. Were they all from the same geographic region (maybe all buying gas at the same station)? Were they all tuned by the same tuner? Was the person who diagnosed the issue in the business of selling the "cure" or an otherwise accurate source of info?
If, to my satisfaction, I could determine that a large enough number of Evos were experiencing signs of pump fatigue/failure to be statistically significant, that these Evos were spread out all over the country so as to be geographically diverse, and most if not all of them were stock Evos and not otherwise the subject of a poor tune, then I would have to agree with you that there is an issue. At that point, Mitsubishi of North America would need to get involved in order to issue a service bulletin or provide warranty replacement of the batch of pumps that were among those likely to fail.
But let's look at the facts. These are not stock Evos that are experiencing problems. These are also not WORKS tuned Evos. These are Evos tuned by other tuners. These tuners are now advocates of replacing the factory fuel pump. Why? Because otherwise the factory pump would b overtaxed with the tune that they are offering.
What lesson is there for WORKS to be learned from this? The lesson, I suppose, is and has always been not to follow the crowd and try tune to tune a car like the other guys.
The only time you should ever need to replace a factory fuel pump on a car with a safe, healthy tune is (1) if you have upgraded to larger injectors or (2) you have a car with well over 150,000 miles on it and the old pump is beginning to show signs of fatigue.
Since our customers have a safe, healthy tune designed for factory fuel injectors and all of our customers’ cars are no older than 2003 models, there is no reason to upgrade the pump.
-- DavidV
Zeus,
On the one hand, I agree with you that a Walboro pump is cheap insurance if indeed there is an issue to be addressed. On the other hand, I first need to be convinced by compelling evidence that there is an issue in the first place.
Here is one way to go about ascertaining whether there is indeed an issue that needs to be addressed.
How many Evos exhibited signs of a fuel pump running at or beyond capacity?
If the answer is a that a handful of cars had this happen, the next question that needs to be asked is whether this is statistically significant among the thousands of Evos sold in North America.
Next, I would want to know whether these cars had anything in common or whether the sample was truly random. Were they all from the same geographic region (maybe all buying gas at the same station)? Were they all tuned by the same tuner? Was the person who diagnosed the issue in the business of selling the "cure" or an otherwise accurate source of info?
If, to my satisfaction, I could determine that a large enough number of Evos were experiencing signs of pump fatigue/failure to be statistically significant, that these Evos were spread out all over the country so as to be geographically diverse, and most if not all of them were stock Evos and not otherwise the subject of a poor tune, then I would have to agree with you that there is an issue. At that point, Mitsubishi of North America would need to get involved in order to issue a service bulletin or provide warranty replacement of the batch of pumps that were among those likely to fail.
But let's look at the facts. These are not stock Evos that are experiencing problems. These are also not WORKS tuned Evos. These are Evos tuned by other tuners. These tuners are now advocates of replacing the factory fuel pump. Why? Because otherwise the factory pump would b overtaxed with the tune that they are offering.
What lesson is there for WORKS to be learned from this? The lesson, I suppose, is and has always been not to follow the crowd and try tune to tune a car like the other guys.
The only time you should ever need to replace a factory fuel pump on a car with a safe, healthy tune is (1) if you have upgraded to larger injectors or (2) you have a car with well over 150,000 miles on it and the old pump is beginning to show signs of fatigue.
Since our customers have a safe, healthy tune designed for factory fuel injectors and all of our customers’ cars are no older than 2003 models, there is no reason to upgrade the pump.
-- DavidV
When testing fuel pump work load, what is the testing method? Is fuel pressure used or some sort of volt meter? I don't like the idea of putting a HP rating to the maximum ability of a fuel pump. Just seems to vague.
stock cars will never need a fuel pump with a reflash
However - cars with a boost controller and cams will see the fuel pressure drop on long dyno pulls - easy to verify with a simple fuel pressure gauge
If your car holds the constant fuel pressue you dont need a pump upgrade - - if it falls off at the end of a long pass you could use a pump
For the record - I never sold ONE fuel pump and dont sell them
However - cars with a boost controller and cams will see the fuel pressure drop on long dyno pulls - easy to verify with a simple fuel pressure gauge
If your car holds the constant fuel pressue you dont need a pump upgrade - - if it falls off at the end of a long pass you could use a pump
For the record - I never sold ONE fuel pump and dont sell them
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From: Austin, TX
Originally posted by DynoFlash
stock cars will never need a fuel pump with a reflash
However - cars with a boost controller and cams will see the fuel pressure drop on long dyno pulls - easy to verify with a simple fuel pressure gauge
If your car holds the constant fuel pressue you dont need a pump upgrade - - if it falls off at the end of a long pass you could use a pump
For the record - I never sold ONE fuel pump and dont sell them
stock cars will never need a fuel pump with a reflash
However - cars with a boost controller and cams will see the fuel pressure drop on long dyno pulls - easy to verify with a simple fuel pressure gauge
If your car holds the constant fuel pressue you dont need a pump upgrade - - if it falls off at the end of a long pass you could use a pump
For the record - I never sold ONE fuel pump and dont sell them
I’d sure like to see a detailed answer to Mayhems question on what symptoms to look for in regards to fuel pump induced starvation. I’d also like to know at what point on a dyno pull starvation starts to show up. 
Thanks
Rick
Thanks
Rick
