Anyone know about the Lethal fuel pump voltage booster?

TK1299

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I installed a Whipple on my terminator along with 80lb injectors and dual DW pumps. Tuner said I need a boost a pump. I came across the Lethal Performance plug and play 40 amp fuel pump voltage booster. Does anyone have experience with this and can you let me know if it’s a good option?
 

decipha

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thats impossible

The block can't support the power it would take for a 4v to peg two 340 pumps at only 4k.

You have other issues.
 

TK1299

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I’m on 93 octane. From everything I’ve read the 340lph pumps were plenty, unless one of them failed. They are brand new.
 

01yellercobra

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I’m on 93 octane. From everything I’ve read the 340lph pumps were plenty, unless one of them failed. They are brand new.
That or a possible wiring issue. I had an AEM 320 fail on me before. Everything was fine at part throttle, but as soon as I went into boost fuel pressure dropped like a rock.
 

TK1299

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I don’t think it’s a wiring issue because they were a direct replacement. Plug and play
 

Willie

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I've had defective new parts so it's possible one pump is bad. However, start with the simplest to diagnose. The system uses a pair of fuses, relays and fuel pump driver modules. Check for one blown fuse. If good, it could be a bad relay or driver module.
 
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TK1299

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I edited above so please reread. Thanks.
I appreciate your response. I’ll check it this evening. I’m hoping it isn’t a bad pump. That will be frustrating. I tested them prior to installation and they worked
 

Willie

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I know the frustration of a NEW part that doesn't work. It's the last thing you expect. That was smart testing them prior to install and I'm willing to bet it's something else.
 

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