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stock DME load limits hindering piggyback potential?
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01-14-2011, 12:21 AM | #67 |
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Great to see two people discuss things civilly.
I've read a ton, and now my head is hurtin!
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01-17-2011, 06:25 AM | #69 | |
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I know for a fact that GIAC modifies 69 different tables in the DME. Not trying to start a war, just trying to contribute to the conversation!
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01-17-2011, 06:42 AM | #70 |
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Guys,
Lets not forget one other thing: when you are comparing GIAC/COBB to PROcede and JB3/4 lets not forget that the piggies use higher boost to achieve more power. I still have not found a reasonable explanation why the piggies push the turbos past 18 psi, when we know for a fact that such boost is WAY PAST the stock turbo efficiency. As a matter of fact anything above 17psi is the "land of diminishing returns". You are simply generating heck of a lot more heat and you are not seeing a proportional increase in power. ...and then you wonder why engines start knocking.... Both GIAC and COBB tunes seem to be "load/torque targetting" tunes. Basically, the way I understand it is that the primary target is a specific torque output. Then, all other targets such as boost, ignition, etc etc are adjusted accordingly based on the present conditions such as octane, temps, ambient air pressure, etc etc.
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01-17-2011, 10:58 AM | #71 | ||
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01-17-2011, 11:15 AM | #72 | |
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The fact is that the piggies hold the records for dyno runs, 1/4 mile, and 60-130 so I'd say they have the power advantage.
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01-17-2011, 11:16 AM | #73 |
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He just keeps preaching his flashes day to day. Then engaging Procede theads with negativity and untrue comments. Its quite amusing and ironically he has made a thread about his Giac Problems.... What a riot.
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01-17-2011, 11:17 AM | #74 | |
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Once flashes start running the boost, piggys will no longer be on top. |
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01-17-2011, 11:26 AM | #75 | |
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The Procede completely takes over boost control from the DME. There is no need to modify any internal tables since the DME is no longer controlling the wastegates. There are no load limits or any other limitations other than the MAP sensor as stated above. I'm not sure why people would think there is a load limit when there have been plenty of documented cases of guys running up to the 22psi limit and making 450whp with stock turbos.
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01-17-2011, 11:31 AM | #77 |
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01-17-2011, 11:36 AM | #78 |
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01-17-2011, 11:37 AM | #80 |
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They will also have to improve boost control strategies (make throttle less reactive to overshoot). And get rid of the airflow targeting logic that drops boost when it could/should be raised. And visa versa. I suspect one reason we dont see any high boost flashes is that the boost targets would climb too high in warm days or after a long sustained full boost pull (when IAT gets high). Fundamental issues when making good safe power is more important than trying to make Xhp in all conditions.
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01-17-2011, 11:38 AM | #81 |
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01-17-2011, 11:40 AM | #82 |
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i think who dont understand nothing technical how piggy works stay away as i do let tuners talk
shiv just shot you a PM
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01-17-2011, 11:49 AM | #83 | |
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01-17-2011, 11:50 AM | #84 |
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01-17-2011, 11:57 AM | #85 | |
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01-17-2011, 11:59 AM | #86 | |
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01-17-2011, 12:08 PM | #87 |
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01-17-2011, 12:08 PM | #88 | |
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Concerning the methanol comments, my personal opinion is that methanol is not to be taken lightly and cannot be relied on from day-to-day basis. As previously discussed, methanol is only for the most advanced users who are fully aware of the risks involved and know what they are doing. Quit preaching methanol left and right! Finally, I will repeat this time and again: Saying that someone is wrong is OK in those forums for as long as a reasonable and understandable explanation is provided. Blatantly saying: "You are talking smack and you don't understand anything" helps no one!
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Last edited by vasillalov; 01-17-2011 at 12:10 PM.. Reason: spelling correction |
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