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  1. Loss of power still

    It's been two weeks of tinkering with my new downpipe and getting it to sit perfectly. But I still feel and see performance loss on my AP3. AFR is running too rich on wot. 10.5 - 10.6 I'm running the stage 3 tune from cobb. It doesn't seem like it's compatible enough for my setup. STFT and...
  2. More downpipe troubles

    I've managed to return my turbo studs back in but I'm still having trouble. Or at least I think I am. With the downpipe bracket not being completely flush with the back of the turbo. You can see a little of the turbo gasket. I've went through a ton of pictures on downpipes and I've seen some...
  3. Turbo studs..

    I'm trying to flush up and reseat my mishimoto downpipe. Whilst taking out the oem the nuts on the turbo studs were so tight that it turned both turbo studs out a little. Because of this the downpipe isn't bolting flush to the turbo. I have everything taken apart again and I'm trying to figure...
  4. Ecoboost AFR under wot

    I'm just wondering what kind of AFR everyone is getting under wot. C&L CAI MAP intercooler Mishimoto Catless Downpipe Steeda BOV adapter Stage 3 Cobb v3 tune (93 Oct) After installing the new catless downpipe and loading the stage 3 tune. I'm seeing low 10s on the AFR under wot. Down from 11s...
  5. Ecoboost Catless DP issues?

    Is anyone else running a catless dp on the ecoboost? I just installed the mishimoto Catless downpipe. AFR after Cobb stage 2 tune seem to be fine for the most part. 13.8-14.2 But I have seen a lot lower numbers when flooring. Without the DP I would see 11s on the AFR. With the DP I see...


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