turbov6joe
Signal 1 J-12
- Joined
- May 22, 2002
For some starnge reason my TTA seems to loose boost on the
2-3 shift. I have the max boost set at 25 psi, and in first and second gears it's at that boost level the entire WOT pass. However, when the tranny is in the process of shifting into third gear, or so it seems to be, the boost drops down to around 12 psi then, ever so gradually, increases back up to 25 psi the rest of the pass??? I'm loosing valuable time and MPH with this little problem and would like to get it figured out ASAP! Here are my thoughts on the matter. Recently I switched to 50's and have noticed that this problem is more pronounced. I'm thinking that my Joe L. chip, which I know for fact was designed to pound the injectors (for my old car/combo...BIG turbo), might have too much fueling going on just when the tranny is going into 3rd, thus causing it to be SO rich I'm loosing exhaust velocity and boost (just using a TE44 on the TTA). The second thought I had was maybe JL programmed some kind of 3rd gear boost scale down to avoid KR, again maybe a reason why the boost drops so dramatically? Lastly, maybe the tranny is taking so long to shift (100% stock), it's unloading the motor and making the boost drop? Any other ideas or comments in reference to this matter? I'm all ears!
PS> I'm in the process of having my JL chip file burned onto a 16 position thumbwheel chip with a 5% decreasing fuel table at each level...maybe this will allow me to get the EGT up over 1400º???
PSS> Is there a direct correlation between timing and fuel needs? This current JL chip was at 23.9º WOT timing to begin with. We re-burnt it down to 21º to get rid of some detonation at high boost and noticed that the EGT wouldn't go over 1400º no matter how low I turned down the FP regualtor (40 psi static is as low as it will go). I seem to recall with the 23.9º WOT timing, the EGT was around 1450º...a far cry from where it needs to be, but better! I usually tune for the high 1500's to low 1600's.
2-3 shift. I have the max boost set at 25 psi, and in first and second gears it's at that boost level the entire WOT pass. However, when the tranny is in the process of shifting into third gear, or so it seems to be, the boost drops down to around 12 psi then, ever so gradually, increases back up to 25 psi the rest of the pass??? I'm loosing valuable time and MPH with this little problem and would like to get it figured out ASAP! Here are my thoughts on the matter. Recently I switched to 50's and have noticed that this problem is more pronounced. I'm thinking that my Joe L. chip, which I know for fact was designed to pound the injectors (for my old car/combo...BIG turbo), might have too much fueling going on just when the tranny is going into 3rd, thus causing it to be SO rich I'm loosing exhaust velocity and boost (just using a TE44 on the TTA). The second thought I had was maybe JL programmed some kind of 3rd gear boost scale down to avoid KR, again maybe a reason why the boost drops so dramatically? Lastly, maybe the tranny is taking so long to shift (100% stock), it's unloading the motor and making the boost drop? Any other ideas or comments in reference to this matter? I'm all ears!
PS> I'm in the process of having my JL chip file burned onto a 16 position thumbwheel chip with a 5% decreasing fuel table at each level...maybe this will allow me to get the EGT up over 1400º???
PSS> Is there a direct correlation between timing and fuel needs? This current JL chip was at 23.9º WOT timing to begin with. We re-burnt it down to 21º to get rid of some detonation at high boost and noticed that the EGT wouldn't go over 1400º no matter how low I turned down the FP regualtor (40 psi static is as low as it will go). I seem to recall with the 23.9º WOT timing, the EGT was around 1450º...a far cry from where it needs to be, but better! I usually tune for the high 1500's to low 1600's.
