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Alright, I opened up the HPFP. There was no gunk to clean. It's basically brand new. I haven't put even 100 miles on the car since I installed the Corksport HPFP. I guess I'll be replacing the PRV next to see if that fixes the issue. If not that, I'll replace the spill valve. I have a whole used...

Well alright. I'll pull it tomorrow and see what's going on. Edit: to be clear, the red line product you referred to is this stuff, right? https://www.oreillyauto.com/detail/c/red-line-synthetic-oil/red-line-fuel-system-cleaner/rl00/60103

The car actually feels pretty good until it warms up, though there's a bit of a stumble still. It seems to idle and respond to accelerator inputs alright until it warms up, and then things get weird. In one of the logs, the engine RPM would momentarily dip to 400 RPM, and then it would catch...

D'oh. Check the photo again. I attached after posting. I did a full disassembly and cleaned everything less than 100 miles ago on the HPFP. Corksport was kind enough to include an E85 conversion/rebuild gasket kit for free with the HPFP kit, so I just cleaned it with carb/choke cleaner and...

I used engine oil. Liqui Moly 5W-30 to be specific. On the plus side, I have a whole second fuel rail from a failed engine. Is the red circled part the PRV?

Hey thanks! I just installed a Corksport HPFP in July, and the vehicle was behaving semi-normally before this issue developed. Out of curiosity, in the CSV I uploaded, which figure are you seeing that is concerning? I am presuming "HPFP Act. Press" (Not sure what "Act." means. Actual?) should...

To my knowledge, yes. All the MAFs I have tried (I have three from used vehicles, including my original) are from Mazdaspeeds. Printed on the top is the following: L3K9 197400-2240 It's got the same inscription as the original MAF I had when the vehicle ran properly. I'm attaching three .CSV...

Thank you both for the responses. The car is at my friend's place, and I'll be able to get my hands on it later next week. I'll definitely get the logs pulled. Any recommendations on what I should be logging? I have no experience with Accessport, and I seem to remember that only so many things...

ENGINE/DRIVABILITY Year/Make/Model: 2006 Mazdaspeed 6 Mileage: 40k on a rebuilt engine Location: Detroit, MI Concern: Vehicle bogs at WOT, started a fire on insulation, awful idle DTC's: p2177, p2187, p0234 Modifications: Cobb SF Intake, Corksport HPFP, Accessport tuned to ~340. Normally 19PSI...

Hey all. 2006 Mazdaspeed 6. I tend to drive it as a Winter beater in Michigan, but a friend of mine had his car take a dump, and needed something to get around with, so I loaned him my Mazdaspeed. It sits around without a battery in it until Winter, so I had some normal unboxing pains to deal...