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Old 11-05-2020, 06:52 PM   #1
teesee150
 
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JMS Boost a Pump Max Voltage?

What is everyone running as a max voltage for the JMS boost a pump? I keep seeing people toss around 17.47V, but I saw an old thread from parish that said he was running 21.5v with no problems.

I was wondering if there is a reason people aren't going over 17.47V (longevity, cavitation, heat etc?)
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Old 11-05-2020, 07:15 PM   #2
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Quote:
Originally Posted by teesee150 View Post
What is everyone running as a max voltage for the JMS boost a pump? I keep seeing people toss around 17.47V, but I saw an old thread from parish that said he was running 21.5v with no problems.

I was wondering if there is a reason people aren't going over 17.47V (longevity, cavitation, heat etc?)
A number of us got check engine lights at 17.47V. I’m currently at 17.0V with no issues.
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Old 11-05-2020, 07:37 PM   #3
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I'm set at 17.4 but it was done with engine running and making sure it was actively charging battery to try to simulate max input voltage (aka shouldn't ever go higher). No issues.
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Old 11-05-2020, 08:47 PM   #4
teesee150
 
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Originally Posted by Joshinator99 View Post
A number of us got check engine lights at 17.47V. I’m currently at 17.0V with no issues.
If we're trying to push for max power, is at as simple as disabling the code thru hptuners/efi live?
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Old 11-05-2020, 08:53 PM   #5
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Quote:
Originally Posted by teesee150 View Post
If we're trying to push for max power, is at as simple as disabling the code thru hptuners/efi live?
I know Jannetty had tried disabling the FSCM code but still came back on a couple of his customers cars if I remember correctly. Maybe he’ll chime in.

Not sure what you mean by max power? Even with the voltage booster, one in-tank pump doesn’t support “max” power IMO. I’ve got a bigger custom in tank pump (DW400) and am still out of gas at 1K engine HP on 93 only. Multiple in-tank pumps or at least an auxiliary pump are needed to really get up there in power.
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Old 11-05-2020, 09:16 PM   #6
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Quote:
Originally Posted by Joshinator99 View Post
I know Jannetty had tried disabling the FSCM code but still came back on a couple of his customers cars if I remember correctly. Maybe he’ll chime in.

Not sure what you mean by max power? Even with the voltage booster, one in-tank pump doesn’t support “max” power IMO. I’ve got a bigger custom in tank pump (DW400) and am still out of gas at 1K engine HP on 93 only. Multiple in-tank pumps or at least an auxiliary pump are needed to really get up there in power.
I mean pushing limits of stock system. Just finishing up a Whipple install on a forged motor and I expect to be hitting limits of the lt4 fuel system and lingenfelter hpfp
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Old 11-05-2020, 09:50 PM   #7
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Originally Posted by teesee150 View Post
I mean pushing limits of stock system. Just finishing up a Whipple install on a forged motor and I expect to be hitting limits of the lt4 fuel system and lingenfelter hpfp
Yeah, you’ll definitely be maxing out the low side for sure. Thankfully it’s not hard to adjust after the booster after fact (aside from contorting yourself into the trunk lol), so you can always start high and tweak it as needed afterwards.
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Old 11-08-2020, 01:02 PM   #8
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I will be installing mine next week. I will speak with Ted as he is tuning the car
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Old 11-08-2020, 01:36 PM   #9
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Installing mine soon, is there anything in the tune that needs to be changed? I saw someone on youtube changed the alternator voltage tables...?
https://youtu.be/DL19veeM6QA
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Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE
Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel.
Elite tuning, results coming soon.


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