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Old 03-29-2019, 05:34 AM   #15
John_C
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Originally Posted by Slickcas View Post
I am running ID 1050x with the DSX auxiliary pump and DSX Flexfuel Kit. Also have the ZL1 pump NO BAP. I have the fule pressure set to 65. The DSX kicks on at 4psi boost not the standard 10 pounds of boost . The FPCM just slows down the pump in the tank and maintains 65psi. Pushing 700rwhp on true E85 with the TH400. Injector duty cycle was like 65%. Much lower when there is 93 in the tank or a mix.
I'm pushing 760rwhp through the 6L80 and Circle D 32-3400.

My ZL1 pump drops fuel pressure and maxes out quick on DC with E85.

That's before the DSX pump kicks on at 9psi boost, too.

Wonder how I could get it to kick on sooner like yours at 4psi?
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Old 03-29-2019, 07:45 AM   #16
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Quote:
Originally Posted by John_C View Post
I'm pushing 760rwhp through the 6L80 and Circle D 32-3400.

My ZL1 pump drops fuel pressure and maxes out quick on DC with E85.

That's before the DSX pump kicks on at 9psi boost, too.

Wonder how I could get it to kick on sooner like yours at 4psi?
You should be running the Non ZL1 PNP Controller (4psi) that DSX offers. When you purchased the kit from their online store you have the option to select which sensor you want. Email Dave and let him know you bought the wrong one.

Mine actually kicks on pretty instantly (2psi). Usually when I floor it, I'm instantly at 6 pounds of boost to start, so its on immediately.

That will fix your fuel pressure issue.
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Old 03-29-2019, 11:40 AM   #17
Slickcas
 
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Looking at that DW400. It does look like the best returnless system. Could be used with the DSX pump also.
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Old 03-29-2019, 12:01 PM   #18
Batmanntexas

 
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AGP has a twin pump setup ,E85 compatible, that is priced really reasonable. It's good for up to 1200whp.

On a separate note, for informational purposes, with just the ZL1 pump, ADM FPCM, the LS9 cam, stock diameter balancer, my car made 600rwhp with the 4" pulley on the Whipple, and 630 with a 3.75".

-Scott
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Old 03-31-2019, 11:29 AM   #19
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Quote:
Originally Posted by John_C View Post
I'm pushing 760rwhp through the 6L80 and Circle D 32-3400.

My ZL1 pump drops fuel pressure and maxes out quick on DC with E85.

That's before the DSX pump kicks on at 9psi boost, too.

Wonder how I could get it to kick on sooner like yours at 4psi?
Shoot me an email (dave@dsxtuning.com). We will get you squared away.
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