STi and 18.7 psi boost w/Cobb stage 2

Discussion in 'Modifications And Maintenance' started by krees23, Nov 15, 2005.

  1. krees23
    Offline

    krees23 Well-Known Member

    Likes Received:
    8
    Trophy Points:
    203
    I'm pretty sure I know what to do to fix it... go to the Cobb LWG map. But I really like the performance when accelerating hard.

    How relatively safe do you think it is if I just occasionally boost that high with stock engine / injectors / pump? Say, no more than 2 to 3 seconds...

    I'm measuring boost with the "Live Boost" functionality of the AP

    I run the 91 octane map and I fill up with 92, or higher (when I find it).

    Thanks
     
  2. WRX1
    Offline

    WRX1 _ Staff Member

    Likes Received:
    727
    Trophy Points:
    348
    you will be fine. I would have it check with a wbo2 and see where your afr sits. I would also get the tari logger and pull some logs that way to make sure you are not knocking. As long as you are knock free and the afr is in check you will be fine. I do have a wbo2 and the tari logger if you want to head over to the est side of st. paul to check things out.

    Russ
     
  3. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    in all reality you are probably hitting more like 17psi. the ap seems to be off as i have recently found it. i thought i was loosing boost through my bov but i guess i was wrong. anyways, ap said 16.4 and the dyno said 13.8.
     
  4. WRX1
    Offline

    WRX1 _ Staff Member

    Likes Received:
    727
    Trophy Points:
    348
    ^^^ Have you ever logger your car with the tari logger to see what your map sensor is reading? The is the best way of doing it.

    Russ
     
  5. krees23
    Offline

    krees23 Well-Known Member

    Likes Received:
    8
    Trophy Points:
    203
    That sounds like a plan. I used to live on the East Side (1813 Ames Ave), just off of Whitebear.

    I won't be able to make it this Saturday, but next (11/26/05) will work.
    Give me a PM and we can work out the details
     
  6. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    i have logged a little bit with tari. It was more just messing around with the software.
     
  7. BlackDubRX
    Offline

    BlackDubRX New Member

    Likes Received:
    0
    Trophy Points:
    0
    The dyno told you what boost you were running? Odd, I have yet to see anyone hook up a boost sensor to the dyno.
     
  8. wall of tvs
    Offline

    wall of tvs Well-Known Member

    Likes Received:
    121
    Trophy Points:
    298
    True, but the AP also takes its reading from the MAP sensor.

    Still though, it is best to use either Tari DL1 or ECUexplorer since they have a maximum value function to determine peak boost.
     
  9. 6MTizzle
    Offline

    6MTizzle 2SLO

    Likes Received:
    12
    Trophy Points:
    223
    Mine spiked on Cobb stage 2 LWG at about 18.3 psi driftin240 told me when he was hooking it up. I still haven't had a chance to run the regular stg 2 map so I have nothing to compare to.
     
  10. Justin
    Offline

    Justin Well-Known Member

    Likes Received:
    22
    Trophy Points:
    273
    so with that being said there is really no difference between the two? The difference would lie within the user not seeing the highest readin on the AP.

    as for you blackdubs...they throw a T in the boost gauge hose to get the reading. simmer down my cocky child.
     
  11. readymix
    Offline

    readymix ...Lest ye be trod upon... Staff Member

    Likes Received:
    2,892
    Trophy Points:
    473
    Try going to a dyno.
     
  12. BlackDubRX
    Offline

    BlackDubRX New Member

    Likes Received:
    0
    Trophy Points:
    0
    Cocky child? I was asking a question, sorry you misunderstood. Which dyno was this at?

    Already been to Elite on several different occasions. Two of those just happened to be dyno days. :roll:
     
  13. DISCOPOPE
    Offline

    DISCOPOPE Well-Known Member

    Likes Received:
    17
    Trophy Points:
    223
    ron runs a boost line for every car i've seen on the wheels.
    and iirc last dyno day he was getting iconsistant readings..
     
  14. krees23
    Offline

    krees23 Well-Known Member

    Likes Received:
    8
    Trophy Points:
    203
    I downloaded and installed the tari software. I'll hook my laptop up and see what happens this weekend.