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| Audi A8 My Fiero (Page 12/220) |
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seajai
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AUG 10, 11:27 PM
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| quote | Originally posted by engine man:
I measured from the top of the frame to the top of the firewall then from the top of the frame to the top of the engine so i could measure down the firewall to where the top of the engine would be . knowing that from the very top of the firewall to axle center is 20 inches i measured down to where the top of the engine would be then took a plum bob and measured how far forward the fire wall kicked forward to see how far forward i could move the engine then i measured from the front cradle mounts to the axle center line and that was 22 inches this gave me something to measure off on the cradle to position the engine. it just happen to be i could put the front pulley right even with the front cradle mount bolt hole when all said and done
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So what did your axle offset end up being from the trans to the hub? How tall is the Audi V8?
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engine man
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AUG 11, 02:01 AM
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about 4 3/4 inches since from the from the front of the pulley to the center of the axle on the transmission was 26 3/4 inches and from the front cradle bolt hole it is 22 inches to the hub centerline so 22 from 26 3/4 = 4 3/4
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engine man
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AUG 13, 03:52 PM
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the cradle all done ! it could be prettier but oh well

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engine man
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AUG 13, 06:53 PM
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? is it possible to read and copy all the tables from a stock ecu and put them on a aftermarket ecu as a starting point [This message has been edited by engine man (edited 08-13-2012).]
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engine man
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AUG 14, 02:33 AM
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fieroguru
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AUG 14, 06:28 AM
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| quote | Originally posted by engine man:
? is it possible to read and copy all the tables from a stock ecu and put them on a aftermarket ecu as a starting point
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Yes and no. It is possible to copy and paste the information, but there are a couple of issues.
The size/shapes of the tables might be different and require interpolating data for points you don't have or you might need to lose resolution to fit in a smaller table. The second and more important aspect is rarely is a single or multiple table all you need. For example a stock speed density computer uses values across multiple tables to control the fueling at a given load, rpm, throttle opening, engine temp, air temp, voltage and O2 feedback (not including all the constant values). So when you swap computers, you can lose or gain additional contributing tables for the fuel/timing control which will alter the numbers in the tables across the board.
When going from one GM ecm to another GM ecm, I have copy/pasted/manipulated the tables as a closer starting point (like using the LT4 map/rpm table for my Ramjet setup), but once the tuning starts most values needed some minor tweaking anyway.
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engine man
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AUG 14, 10:57 AM
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thanks Fieroguru I am still up in the air about weather to run the stock ecu with chip and immobilizer or do the Vems V3 or meegasquirt MS3x no matter what it is $700 but with the Vems and Megasquirt i can tune and stock can be but from what i am told on this Bosch unit the chip needs to be unsolderd and burned even though it is OBD2. I just thought of 1 other thing can a ostrich emulator be used in my Bosch motronic obd2 ecu and could i copy the original maps to it modify and turn off the automatic transmission stuff ? [This message has been edited by engine man (edited 08-14-2012).]
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Will
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AUG 14, 08:53 PM
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Is that 1x2 rectangular tubing for the new rear crossmember?
I'm not sure that's stiff enough to take the weight + torque load from the powertrain by itself without bowing... And it's absolutely not good enough to put any kind of cornering loads on the cradle.
You need to gusset and brace the heck out of that before you start cornering hard.
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engine man
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AUG 14, 08:53 PM
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Wow i opened up my ecu and not a pretty site not even sure it would work but i will get some electronics cleaner and spray it down and see what it looks like [This message has been edited by engine man (edited 08-14-2012).]
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engine man
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AUG 14, 09:02 PM
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I suppose i could make a few gussets for it and weld them in
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