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
Terminator Talk
New Project - DIY Fuel Pump Controller
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="SecondhandSnake" data-source="post: 16460258" data-attributes="member: 116684"><p>Malcolm- thanks for the info. I always wondered about the MAF signal, but at the same time worried about affecting the signal or the delicate PCM circuitry. In this project it's referencing desired pressure and fuel flow, so it's effectively doing the same thing via the FPDM control table.</p><p></p><p>The fuel cooler is nice but more cost and weight than my project, and the other factor- noise. I want to get the pump as quiet as possible at idle to keep it nice and stealthy, rather than most cars making this much power that you can hear the fuel pump screaming a block away. Even at 50% duty cycle it's pretty noisy.</p><p></p><p>Looking back I should have went with an in tank pump to minimize noise, but the options weren't as available at the time I purchased the hardware. Oh well, lesson learned for the Fairmont. On the bright side when I eventually upgrade it will be a less than 30min project, no need to drop the tank.</p><p></p><p>Back to the project-</p><p></p><p>Most of the electronics should be here tomorrow. Unfortunately I realized I think the PWM from the PCM is 12V, not 5V like a lot of the other engine sensors. That means I had to order some other parts to make it work. But I can still test the outputs, maybe do a bench test to verify I can control fuel pump speed (and which pins will work), and that my feedback PWM works.</p></blockquote><p></p>
[QUOTE="SecondhandSnake, post: 16460258, member: 116684"] Malcolm- thanks for the info. I always wondered about the MAF signal, but at the same time worried about affecting the signal or the delicate PCM circuitry. In this project it's referencing desired pressure and fuel flow, so it's effectively doing the same thing via the FPDM control table. The fuel cooler is nice but more cost and weight than my project, and the other factor- noise. I want to get the pump as quiet as possible at idle to keep it nice and stealthy, rather than most cars making this much power that you can hear the fuel pump screaming a block away. Even at 50% duty cycle it's pretty noisy. Looking back I should have went with an in tank pump to minimize noise, but the options weren't as available at the time I purchased the hardware. Oh well, lesson learned for the Fairmont. On the bright side when I eventually upgrade it will be a less than 30min project, no need to drop the tank. Back to the project- Most of the electronics should be here tomorrow. Unfortunately I realized I think the PWM from the PCM is 12V, not 5V like a lot of the other engine sensors. That means I had to order some other parts to make it work. But I can still test the outputs, maybe do a bench test to verify I can control fuel pump speed (and which pins will work), and that my feedback PWM works. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
The Terminator
Terminator Talk
New Project - DIY Fuel Pump Controller
Top