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MazdaSpeed 3/6 - Fuel, Nitrous & Water Injection MazdaSpeed 3/6 - Fuel, Nitrous & Water Injection Have a CDFP fuel pump question? Do you want to add Nitrous or Water Injection to your Mazdaspeed 3/6 ? Please come on in!


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 Old 12-09-2012, 05:04 PM   #1
 
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Default Logs showing 1 point of fuel pressure drop into the 100s

As can be seen in the photos, and the logs, i am getting these short 'drops' in fuel pressure showing up in the logs.

fp drops to 200's but has no discernible affect on how the car drives. Ie no fuel cut/boost cut

Spill valve on pump was removed and cleaned, although it looked pretty much flawless
sensor on fuel rail was swapped out with a buddies, did some logs and didnt notice any drops.

bought a new sensor, and after installed, i am still getting the drops


running cpe pump, hopefully its not that as i am not looking forward to trying to warranty it.




should i swap pumps with a buddy, or is this obviously something else?

2011 poo
mods: cpe top mount, UR dp and test pipe, JBR 3.5" intake, itv 22s, 7gph meth nozzle in boost tube spraying at 15psi
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File Type: csv datalog38.csv (24.5 KB, 3 views)
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 Old 12-09-2012, 05:19 PM   #2
 
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Theres a NATOR toronto?

sorry to thread crash.

Did you reflash your map? Maybe its not a mechanical problem.
Really i have no clue. Just a thought.
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 Old 12-09-2012, 05:28 PM   #3
 
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@dantes5823; @rfinkle2; @Bucker; can this just be a glitch while logging?
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 Old 12-09-2012, 05:29 PM   #4
 
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Originally Posted by johnredding View Post
Theres a NATOR toronto?

sorry to thread crash.

Did you reflash your map? Maybe its not a mechanical problem.
Really i have no clue. Just a thought.
that is debatable
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 Old 12-09-2012, 05:49 PM   #5
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Have you swapped fp sensors yet?
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 Old 12-09-2012, 05:53 PM   #6
 
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ugh ooooo!! You have joint a small club of Pu owners that have this issue. I'll try digging up the thread and post it here.
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 Old 12-09-2012, 05:54 PM   #7
 
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Originally Posted by Tokay444 View Post
Have you swapped fp sensors yet?
yep. As indicated in the first post, i bought a new sensor and it is currently installed
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 Old 12-09-2012, 05:55 PM   #8

 
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It's an electrical glitch, fiddle with the plug on the fuel pressure sensor. It's fairly common, most guys just clean the connector and re-plug and it goes away. Sometimes it will strike again in a few months.
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 Old 12-09-2012, 05:57 PM   #9
 
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Fuel Pressure Dips
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 Old 12-09-2012, 06:02 PM   #10
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Reading fail, but yeah connector like we first thought.
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 Old 12-09-2012, 06:16 PM   #11
 
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makes sense now, when i swapped in ansons sensor and i showed no drops, it was probably because i had unplugged it and replugged it in etc
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 Old 12-09-2012, 06:18 PM   #12
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Fucking hard wire that shit.
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