lean

Hello all, I've been chasing this issue for about 2 months now, car cruises just fine, AFRs are at 14.5-14.8 out of boost, cruising anywhere from 40-80mph.... No problem, now when I give it WOT on a pull and starts boosting the AFRs want to jump up to 15-16... However, if I ease into boost I can...

Hey guys, I am new here, so I apologize if I'm not doing this right... So, a while ago, I was driving around and punched the throttle, car overboosted to 30psi and hit fuel cut, tried slowly easing into boost and heard the EWG open a little bit, but not nearly as much as normal, the next pull...

08 MS3 Rough Idle?! +20-24.80 STFT’s, AFR bouncing around between high 13’s to low 17’s. Vacuum at Idle is -4’s. Found a couple small vacuum leaks, including MAF sensor oring was broken. 1 revision in from Freektune, trying to get the issue lined out, any ideas? Justin emailed and said it was a...

2008 Mazdaspeed 3 240k km or roughly 150k miles DTC's: P2187, P2006, P2009, P0401 Modifications: COBB SRI, COBB TIP, CPE HPFP, EGR DELETE, VTCS DELETE. Stock Exhaust Tune: Stock tune, Stage 0, Stage 1+ sf ots Concern: +20 LTFT at idle, 14.7 AFR at idle but on acceleration AFR's stay around...

Lately I've been having a issue where the car will randomly run lean at idle. Some times when the lean condition happens the HPFP psi will drop down to the lower 400s. Other times pressure will hang around 420-430psi but will still lean out. At times even getting to 16.38 for a second or two. I...

I've been using the website for a bit, has been very useful to read other's experiences to give me ideas on where to start. I have recently put a lot of work into my 1st gen speed 3. The largest item was swapping my factor replacement turbo to a BNR v3 Stage 3 turbocharger and an accessport from...

so this is my first post, If u want to go straight to what my issue is skip the details next ill put troubleshooting in bold I bought my 2013 speed 3 in may 2022 at 134xxxkm and its now just over 140xxxkm. since buying it I've learnt that it has a gen 1 engine, engine is "fine" (comp...

Hey y’all. Not new to the forum or the mzr engines. Just picked up a 2007 MS6. I learned my lesson on my ms3 that I still daily and checked compression before buying. 160psi across the board no fluctuation. The car has a AEM CAI and a bnr stage 1 turbo. Other than that it’s stock. It runs...

So I recently decided to spice up my life and buy a 2007 MS3, but I have a problem. I'm experiencing misfires at idle, and it will throw a code for random misfires and cylinder specific misfires after a driving cycle.(I also believe I have a vacuum leak) The Car will pull all-the-way till...

Currently running a v3 AP in my 08MS3GT with 81k miles. Trying out up to STG 1 93 tune until I get HPFP upgrade within the month. HPFP actual pressure isn't dropping below 1600 ever at WOT. However actual AFR is running at a 12.2-12.35 with boost at WOT. Stock intake system and everything. I...