Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
The Terminator
Engine/Tuning
FPDM info/question
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="srdigital" data-source="post: 16324250" data-attributes="member: 193457"><p>does anyone know what the stock FPDM outputs as far as amps? The final driver is a 5125FE MOSFET, but there is 0 information or a datasheet to be found on these chips, let alone new replacements available for purchase. it was apparently designed as a RF/VHF amplifier.</p><p></p><p>Indirectly someone mentioned, without any supporting evidence, that the stock FPDM maxes out around 18 amps.</p><p></p><p>I didn't research too hard on what the stock pumps draw - however, my Walbro F10000302 ('improved' GT supercar) pumps have a maximum draw of barely 15A per pump. Realistically will probably only draw about 10A at 100% duty at factory fuel pressures (PDF attached). </p><p></p><p>The common replacement MOSFET that is put in modified FPDMs has a 100A output on it. I can sorta understand this, but it's still over 300% more output current than a pair of pumps might draw. </p><p></p><p>I know a dual, unmodified/stock FPDM setup is fairly tried and true, but I really like to over engineer things</p><p></p><p>I'm thinking about upgrading the MOSFET of the FPDMs to allow for a little more headroom as far as amperage goes, depending on what the stock driver actually puts out. I plan on running a dual FPDM setup, one each controlling an individual pump. 100A per driver on the modified units sounds pretty overkill for a single 15A pump . . .</p><p></p><p>Considering it's going to be about $12 to modify/upgrade and a half hour of my labor, why not? There are several currently available and produced MOSFETS that have similar specifications, I just need to decide on an output current.</p></blockquote><p></p>
[QUOTE="srdigital, post: 16324250, member: 193457"] does anyone know what the stock FPDM outputs as far as amps? The final driver is a 5125FE MOSFET, but there is 0 information or a datasheet to be found on these chips, let alone new replacements available for purchase. it was apparently designed as a RF/VHF amplifier. Indirectly someone mentioned, without any supporting evidence, that the stock FPDM maxes out around 18 amps. I didn't research too hard on what the stock pumps draw - however, my Walbro F10000302 ('improved' GT supercar) pumps have a maximum draw of barely 15A per pump. Realistically will probably only draw about 10A at 100% duty at factory fuel pressures (PDF attached). The common replacement MOSFET that is put in modified FPDMs has a 100A output on it. I can sorta understand this, but it's still over 300% more output current than a pair of pumps might draw. I know a dual, unmodified/stock FPDM setup is fairly tried and true, but I really like to over engineer things I'm thinking about upgrading the MOSFET of the FPDMs to allow for a little more headroom as far as amperage goes, depending on what the stock driver actually puts out. I plan on running a dual FPDM setup, one each controlling an individual pump. 100A per driver on the modified units sounds pretty overkill for a single 15A pump . . . Considering it's going to be about $12 to modify/upgrade and a half hour of my labor, why not? There are several currently available and produced MOSFETS that have similar specifications, I just need to decide on an output current. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
The Terminator
Engine/Tuning
FPDM info/question
Top