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ill try this tmr when I take the intake manifold off tomorrow, should i swap my catch cans? put the vented one for the pcv and sealed for VC? If yes, does the sealed can on the vc->intake need a check valve? @Enki

I will I went out and got some fuel system cleaner today, I know it’s a long shot but for 15$ why not I’m also going to take off my intake manifold tomorrow and check everything out if that doesn’t fix whatever’s wrong with it, it’s going to the shop @Enki @StreetSpeed6

I’m going to take it to a shop that specializes in mazdaspeeds, they build engines for people all over North America, called bob speed idk if u guys have heard about it The thing is that every thing I could change should have a code related to it and I’m not getting a code, like low compression...

Heres a log of idling and me slightly revving it, keeps going lean

yeah i put it back in the same location

Thats my vented catch can, i disconnected it and put the stock hose back to see if it would change anything I'll be going stock motor as 3-350whp is plenty for me, ive already gotten too many speeding tickets as is. do you have a picture of this c-clip actuator you speak of?

I think I did I checked, all the vacuum lines going to the turbo and everything is connected properly, I have a bad feeling I’m gna have to make a choice between selling the speed or putting a new engine in it but ig we’ll see, hopefully it’s smt dumb

So I disconnected my vented catch can and put the old oem hose back on, double checked the pcv catch can system and it all looks tight. Also changed my spark plugs since i did a compression test and was there, 6510 gapped at .026. Nothing changed problems still there I don't know where else to...

It might not solve the issue tho, wouldn’t a vacuum leak be noticeable under all conditions? Not just under higher load?

Okay i'll do this, ill also make sure all the lines are good and nothing ripped or anything

i forgot to include the check valve but on the sealed can there's a check valve on the line going back into the manifold Also don't the DM vented cans have a check valve built into the vent? I had the vented OCC on for more then a month before this happened but maybe something failed Would it be...

heres a quick diagram let me know if this is sufficient Sealed occ is mishimoto and vented one is DM

Ill try unplugging the secondary o2 and see if that changes anything, as for injectors ive had a p0202 before and its a way different type of sluggish compared to my current issue Ive looked over the intake turbo-->maf and taken out and reassembled it all looks good. One theory I have is i have...

here are 3 logs first one is just a cold cruising log seconds is a startup log third is repeating the no power flashing check engine condition @L337TurboZ @Enki @StreetSpeed6 When I compare datalog 43 to a log of 3rd gear wot looking a a column with similar psi and load(-0.8, 0.7 load), only...

no but i sent him an email im waiting to hear back okay ill try this out.

its a new revision from freek tune, I flashed it onto the speed when I finished installing the DP yesterday

Yeah I know its not a lot of psi lol I usually hit 22psi Im just saying what ive managed to hit since the issue started How would I be able to diagnose if the actuator for the VTCS has failed?

If i was to just find a way to have the little metal piece that swings the actual butterflies stuck on the open position would that be beneficial? I still don't understand how it would cause the lean AFR tho Also just to put it out there the highest amount of boost ive hit is 8lbs

Yes after hooking up the VTCS the issue persisted but maybe my VTCS solenoid is faulty, but if it was restricting airflow I would think I would be running rich right? My accessport is outside in my car ill post some logs tmr, but my LTFT prior to the issue would always be negative, about -8,0...

I understand my motor is on its way out, but it has been on its way out for months. The lean condition is what's causing my problem If my engine was at that point wouldn't I be burning a bunch of oil? oil consumption is very minimal. It also idles perfectly and drives normally under low load...