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  1. Mito QV Boost Cut and fluctuation

    Alfa MiTo
    Hi! I have mito qv (2010) i have boost cut and fluctuation on high rpm. During full thorttle the boost going to peak... and... i hear PIISSTTT sound at dv. After going to high rpm (4500+rpm) boost begins to fluctuate (for example 20psi>12psi>18psi>14psi...) I'm using MES and torque pro with...
  2. boost prob

    Alfa 159, Brera & 946 Spider
    when coming off a round about there seems to be a lack of low down boost, sluggishness. once it's up to speed it drives normally when you put your foot down. also when sat idling, you hit the throttle and the boost needle doesn't shoot up until you're revving it quite high. i've had the egr...
  3. 2007 147 JTD fault code - P0237 Tubro boost sensor “a” circuit low

    Alfa 147, 156 & GT
    Hi guys, I've got a 2007 147 JTDm that I've had for a little over 6 months. The car has always been difficult to start but never had any engine fault lights come on. Go figure I finally sell the car and the same night I sell it the buyer says the engine light came on. Sure enough it did. Took...
  4. 2.0 JTDM 125kw BOOST question

    Alfa 159, Brera & 946 Spider
    Hello fellow alfa lovers (and haters :D) :) I disabled egr by editing ecu software by egr hysteresis, so egr is now not in use. But car still slow and crappy at 1,2 gear at revs lower then 3000rpm. So i opened EGR map and made change that ecu always gets max air quantity so it wont count on...
  5. 1.9 JTD 16V fluctuating boost very strangely

    Alfa 147, 156 & GT
    Hey Guys! I have red the whole internet literally and still can't find a solution to my strange problem. Not just Alfa but Opel-Vauxhall, Saab and other forums that share this engine. 147 1.9JTD 16V 2003 with 140hp 192A5.000 engine code. So, the problem is the following. The car under load...
  6. Lost all boost, and gauge has stopped

    Alfa 159, Brera & 946 Spider
    Good morning All So my 159 2.4 jtdm ti has lost boost, no error codes. And car is not in limp mode? Any help would be good. Car is only out of the garage from my last post. Have had the boost control valve changed and and egr delete and swirl flaps done. Was running well then boost just dropped...
  7. Question about adjusting boost

    Alfa 147, 156 & GT
    I own 156 2.4JTD 150hp SW 2002 which is only inside face ( if that matters) and i got ot remapped. The fuel adjustment is as much as possible to the point where I would need to upgrade the fuel system, else it will start cutting off cuz of not enough fuel. The turbo has been set to 1.2 bar, it...
  8. MSCF failure. Boost pressire sensor sorted

    Alfa 147, 156 & GT
    So I had a problem with my 147 JTD 16v 140hp. The standard "MSCF failure" follows with limp home mode. The problem only occurred during full power acceleration in 4th,5th or 6th gear. Some times it happened and some times not. If it did not happen I could feel some steppines in the acceleration...
  9. 1750 TBi boost issues 0240 error code

    Alfa 159, Brera & 946 Spider
    So I’ve a newish turbo fitted, I’m getting sporadic over boost issues. I’m suspecting a vac leak. I have to hand the old wastegate. Can anyone talk me through checking the vac hoses. I have a mity vac, but modern cars are a bit of a mystery...
  10. Turbo Boost Threshold GQV

    Alfa Giulietta
    Hi everyone, New here! Since Saturday I am the proud owner of a 2010 GQV Turbo lag/boost threshold is the only negative thing that has struck me. In 2nd gear nothing much seems to happen until around 3000 RPM. Is this normal for this generation GQV? I would have expected it to kick in around...
  11. No boost!!

    Alfa 147, 156 & GT
    Yesterday I went out in my 147 and thought it didn't feel right then when I put my foot down a bit it was totally flat and the Eml came on. Scanned and I get p0238 code for boost sensor A circuit high. Its the 120bhp 8v jtd. I swapped the map sensor out my saab in and no difference. I was poking...
  12. 1.9 jtdm 16v high boost pressure?

    Alfa 159, Brera & 946 Spider
    Hello, i am new to forum but not new to Alfa romeo driving. I am from Bulgaria so please excuse me for possibly bad english ! So here is my story... Recently i went to a person for a ECU remap. Before that he made a diagnostic and tell me that the turbo is overboosting. On the dashboard the...
  13. 1.6 multijet 120hp - boost solenoid values

    Alfa MiTo
    Hi Guys, May i kindly ask you to provide me with % of boost solenoid at idle for 1.6 mjet or 2.0mjet? As, on idle when engine is hot the rod never touch stop screw and MES is showing 62% for solenoid. Is this ok or it should touch the screw? I am asking couse at low rpm car feels little laggy...
  14. Alfa GT 1.9 JTD: Boost, MAF Logs

    Alfa 147, 156 & GT
    Hello guys, my Alfa GT doesn't pull until 2k RPM, then it goes like crazy. I logged my car yesterday with MES 4.3. It was dynamic test: 4th gear, 1,5k RPM full throttle up to 4k RPM. I'm attaching logs beneath. I think that my car fuel usage is kinda high. Recently I have driven 230km (170...
  15. Alfa 159 weird boost / revs??

    Alfa 159, Brera & 946 Spider
    I was wondering if anyone else has suffered from this or knows what it might be? When I drive my 2.4 (210) hard it revs upto about 3500 revs and then flat spots. My swirl flaps are leaking a bit but this seems more than that? I have a hybrid turbo. Any ideas?? Thanks
  16. 1.4 turbo petrol boost

    Alfa MiTo
    Are the 150 bhp 1.4 turbo petrol engines the same hardware as the Cloverleaf 170 bhp 1.4 turbo engine but with less boost? Is it possible to re map the lower bhp engine to 170 or beyond please? Are there hardware changes like bigger turbos or intercooler required?
  17. Alfa 159 no boost when cold

    Alfa 159, Brera & 946 Spider
    Hi guys after enjoying the car 159 1.9 2008 .now it seems there is a new problem. Bad idling (il post video soon) care shakes when idling. No boost whrn the car is cold. Cant achieve 1.6 bar . Cant seem to find any leaks in turbo hose. Egr blanked dpf removed swirl flapd removed. What the hell...
  18. turbo surging at midrange RPM half-boost

    Alfa MiTo
    Hello i hope i find everyone well. I own a mito tjet 155 with a fully straight piped decat custom exhaust, an K&N air intake and a stage 1 remap from Viezu (that didnt make such a difference). Recently i wanted to make the most out of the setup so i went for a custom stage 2 tune. The boost...
  19. [Brera 06 200hp] Factory Boost gauge re-scale

    Tuning & Upgrades
    Hello ! First post here. I was wondering if is possible to re-scale the factory boost gauge in the cluster. I enjoy thinkering with the ECU and i think i have found something. I have found in the EDC16C39 damos the boost pressure "scaling" and "offset" for Canbus / Diagnostic / DSM (??) I...
  20. Boost pressure valve keeps "buzzing"

    Alfa 147, 156 & GT
    Hi Guys! This has been going on for a long time, and I kind of ignored it, but I think that it is something that should be fixed. My boost pressure valve keeps buzzing for way too long on some occasions. This goes on for like 2-5minutes, which I think is way too much. It was replaced with a new...