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MazdaSpeed 3 - Engine, Transmission & Driveline Discussion of engine, tranny and drivelines.


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 Old 01-05-2019, 11:40 AM   #1
 
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Default HPFP Data Logs

Right now in my 2013 Mazdaspeed 3, I'm running a Corksport induction system (same MAF size as stock) and a cobb stage 1+ tune. I wanted to check my HPFP's psi through peak boost, and I read on cobbs webpage to do a 2k-6k rpm WOT 3rd gear pull. I did multiple logs and my psi stayed above 1600. I recently logged a WOT 2k-6k rpm 2nd gear pull and saw my fuel pressure dropped to 1450 psi (I then went back and did a 3rd gear log and everything seemed peachy). Should this 2nd gear pull be a cause for concern or is it normal because it's a lower gear?

2nd Gear WOT.csv

3rd Gear WOT.xlsx
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 Old 01-05-2019, 12:19 PM   #2
 
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Your fuel pressure doesn't drop during WOT (Throttle Position (%) =74) - I'm not sure what your looking at.

It's never a bad idea to upgrade your HPFP, especially in a gen2 though.
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 Old 01-05-2019, 12:30 PM   #3
 
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Well I am defentally pushing my throttle as far it can go, so what does this mean?
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 Old 01-11-2019, 11:03 AM   #4
 
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I would say that you should one, acquire either a corksport or auto tech HPFP that way you'd know that you will be safe and B, get a proper tune from Freektune, Nishan or other reputable mazda shop. A tuner would be able to tell you if anything funky is going on and have your car run the best that it can, OTS tunes are not the best but good to get you from home to a dyno if need be IMO.

I can look but I don't think that in any of my logs the TP was at 100% which I do agree is weird but I have no knowledge on how the computer reads that sensor in terms of WOT if there is anything different from other makes.
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 Old 01-11-2019, 11:48 AM   #5
 
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even in the 2nd gear log, every thing looks fine to me.
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 Old 01-12-2019, 04:10 AM   #6
 
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Originally Posted by Russell141 View Post
Well I am defentally pushing my throttle as far it can go, so what does this mean?
It means that even if the acceleration pedal (APP) is close to or 100%, the actual throttle plate in the throttle plate will not go over 74-78% (depending on the car) because it doesn't make any more gap past that.
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