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So i just recently got my MS3 up and running pretty good. I was seeing close to 0 LTFT, and was making about 19PSI at WOT with the Cobb Stage 3 OTS tune. On Monday i had my first hiccup, my LTFT shot to -20.88 and are stuck there no matter what throttle position (other than WOT). The engine is...

Just wanted to throw an update for anyone dealing with this issue. I finally fixed what was wrong with my car. It was a mix of multiple things. Symptoms - Negative fuels trims (-20.88) - HPFP reading 0PSI - Car randomly dies under acceleration Fix - Fuel pressure sensor was dead. I replaced...

Hahahahahaa so guys, I started fiddling with my wiring harness and the car kept dying. My fuel pressure is also jumping when I move the harness. What is this portion of the harness called? It connects the fuel injectors, the coil packs, and the hpfp.

I finished removing and cleaning the HPFP yesterday. I used lighter fluid that contained Naphtha like you recommended. I reinstalled with a new gasket that mates to the head. I still have 0 PSI. I still have code P0192. I have never replaced the Fuel Rail pressure sensor, so I’m not sure if...

Well the way i see it is this car is almost always parked, if one day i did decide to go ahead and use E85 i wouldn't have to rebuild the pump again. Also, the reason for the o-ring replacement is the fact that the pump i current have was only really held in with one bolt, and that it might have...

Oh i'm not planning on running e85, thats just what they market it as. It's from Corksport : https://corksport.com/mazdaspeed-e85-safe-hpfp-o-ring-rebuild-kit.html

I ordered a USED OEM one from the same year MS3. I also have the E85 safe CorkSport o ring rebuild kit which brings allen heads instead of reverse torx. My belief is that this car saw A LOT of E85 over the years as most of the fuel system is very dirty. My spill valve is showing signs of going...

Hey guys, So a little update. I went to install my hpfp internals to find that only 2/3 bolts were on the actual hpfp. One of the bolt was so stripped i couldn't remove it, and another has no threads on the hpfp housing so it just didn't have a bolt in there. I went ahead and added another bolt...

Yup that's them. I purchased the car in Boca Raton, and that's their location. I think i reconnected them all, but i wouldn't mind deleting the box itself. I have rubber caps i can put over the nipple on the intake manifold. Can i just disconnect the actual actuator motor itself, and just...

The car came with a tune. "Olympic Motorsports Stage 3 tune" Not sure how it was tuned or how reputable that tuner is, but i switched over to a OTS tune from COBB. Stage 1 tune, and i do not really go into boost that much as i want the car to be in top shape before i start to push it. I have...

I understand that, i am not throwing random parts to fix the issue, i am replacing all the cheap parts the previous owner installed. I am replacing these parts regardless. I will stop replacing parts until the culprit is found if that helps. Something to note is that when my car first starts...

Installed CS HPFP, replaced my injector seals again (They were leaking from the fuel rail side), Installed AEM in tank fuel pump @Awafrican recommended. My LTFT were good for about 3 days and now they're stuck at -20.88. I will add that i deleted the EGR with a Damond FULL EGR delete, and i...

Okay, so now i'm really stumped here. I'm still having the above mentioned issues except as of today my car will not hold pressure with the engine off and key on. As soon as it turn off the pressure drops to 5PSI. I have to crank the car for about 5 seconds then stop and crank again to get it to...

I'm not sure how to set things for my AP to log. What do you mean by everything on? Also, that's what i figured so i ordered a CS HPFP Internals and O-ring rebuild kit. Sorry if this is a dumb question. Just trying to learn how this AP works.

Hey guys I was finally able to upload my data log. I attached some of me driving to work, and some of me idling.

Okay will do! Wish i knew about this site beforehand! Thanks for all the help

I checked some places near by but it seems like its for large groups. If anyone is willing to split up a cabin they're about $250 a night for a 3 bedroom. We can make the plans beforehand! Let me know! Any recommendations for hotels near TOTD if that idea falls through for a single person?

Very excited! I'll be there! Now to plan this drive from Miami up to NC....

So i'm guessing this is still a green light for everyone? I'm new here and would love to go and meet some of you other guys with speeds/nonspeeds.

Okay i will check once i'm off work. I data logged yesterday but was unable to upload as i left my computer at work. I will get it up asap. I just got another code P0192. Someone told me it might be my fuel pressure sensor, but it was fine before i replaced the injector seals with the CS...