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Old 08-15-2023, 12:19 PM   #1
Katech_Zach

 
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Katech KAT-A7763 Drop-in Dual Fuel Pump Module

Our phase one of our fuel pump is now released for anyone interested. We have 4 of these available right now which can be found in the link below (ignore the backorder).

https://katechengines.com/i-30498248...mp-module.html

This fuel pump has the full low level fuel performance of a factory Gen 6 ZL1 fuel pump module with all of the factory connection points. It features twin OEM grade high output fuel pumps that supply near double the amount of fuel as the factory.

Currently, this product is meant for the DIY'er, it has the studs to trigger the secondary pump on the top of the module hat. You can use any secondary fuel pump trigger just as you would with an aux pump.

We will be releasing a plug-and-play harness that will allow you to control both pumps with commanded fuel pressure via the factory ECU. Also, we will be releasing an inline post-pump filter kit that is serviceable external to the tank.



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Old 08-15-2023, 12:31 PM   #2
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Great solution Zach! Love the plug and play turn key option... any idea when that will be ready?
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Old 08-15-2023, 01:55 PM   #3
radz28
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DANG IT!!! I was 6-months too early, lol...

Would it be possible to run this set-up with the factory tune? Let's say I wanted to put this on a STOCK ZL1, with the intent on upgrading in the future. Could I run this with the OEM tune, until I need to bring the second pump on-line?

It's a smog-thing (CARB)...
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Old 08-15-2023, 01:59 PM   #4
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Quote:
Originally Posted by radz28 View Post
DANG IT!!! I was 6-months too early, lol...

Would it be possible to run this set-up with the factory tune? Let's say I wanted to put this on a STOCK ZL1, with the intent on upgrading in the future. Could I run this with the OEM tune, until I need to bring the second pump on-line?

It's a smog-thing (CARB)...
We haven't tested that exact scenario but it should work without an issue. The primary pump is 100% controlled by the factory ECU.
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Old 08-15-2023, 06:05 PM   #5
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Hey Mike, output looks to be a LOT less than a Fore Double (and Triple, obviously) that typically run Ti Auto 274/285 pump combos. Can you substitute bigger pumps into your setup like Fore does or are you using smaller pumps to make them fit your bucket?

You should really redo the power levels based on forced induction and E85, since I don’t think you’ll see too many cars on the board making 1200 HP naturally aspirated…
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Old 08-15-2023, 06:37 PM   #6
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Can this be used with a jms if already installed?
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Old 08-16-2023, 05:38 AM   #7
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Excellent, I want one ��
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Old 08-16-2023, 07:16 AM   #8
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Quote:
Originally Posted by Katech_Mike View Post
We haven't tested that exact scenario but it should work without an issue. The primary pump is 100% controlled by the factory ECU.
Thanks for the information!
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Old 08-16-2023, 07:30 AM   #9
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Quote:
Originally Posted by Joshinator99 View Post
Hey Mike, output looks to be a LOT less than a Fore Double (and Triple, obviously) that typically run Ti Auto 274/285 pump combos. Can you substitute bigger pumps into your setup like Fore does or are you using smaller pumps to make them fit your bucket?

You should really redo the power levels based on forced induction and E85, since I don’t think you’ll see too many cars on the board making 1200 HP naturally aspirated…
I am not sure what standard Fore uses for their testing, but this was done at an OEM level supplier with all the line restrictions in place.

At full steam, this pump flows near double the capacity of the factory ZL1 fuel system without the requirements of -8an/-10an line + a regulator.

This fuel system is for the guy that wants up to 1000rwhp on E85 boosted. The pumps we used are much more efficient than the 274/285 fuel pumps above 40psi of fuel pressure. Generally speaking, the pumps used are the equivalent of twin 285's up top.

Below is the data from preliminary testing comparing to the factory C7 ZR1 LT5 fuel module. This was done on a mockup flow bench at a 3rd party, but as you can see, the data is different than the OEM level testing. However, it was good for A-B-C testing. If you want near double the amount of fuel from the factory, our solution is the most simple.

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Old 08-16-2023, 07:44 AM   #10
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How much power roughly would this pump setup support on E60 with a .83-.84 lambda target?
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Old 08-16-2023, 08:05 AM   #11
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Quote:
Originally Posted by Evansa22 View Post
Can this be used with a jms if already installed?
This system is compatible with voltage up to 18v.

So yes, you can use a booster to increase the output if desired.
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Old 08-16-2023, 10:22 AM   #12
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Quote:
Originally Posted by KingLT1 View Post
How much power roughly would this pump setup support on E60 with a .83-.84 lambda target?
It is hard to calculate from dyno variances between shops, areas, etc. Going by our comparison to the LT5 fuel system, I would take whatever horsepower number you have made on a factory LT4 low-side, and multiply that by ~1.75. I would imagine that would be a close ballpark.
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Old 08-16-2023, 11:16 AM   #13
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Quote:
Originally Posted by Katech_Zach View Post
It is hard to calculate from dyno variances between shops, areas, etc. Going by our comparison to the LT5 fuel system, I would take whatever horsepower number you have made on a factory LT4 low-side, and multiply that by ~1.75. I would imagine that would be a close ballpark.
Thanks for the response!
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Old 08-16-2023, 12:31 PM   #14
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Awesome stuff! Will this work with a convertible as well? I haven't gotten to deep into it yet but I came across some posts that were some differences between the convertible fuel pumps vs the coups.
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