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Re: Transmission Mods
Based on the responses here, discussions I have had offline and research of old threads, here is a list of mods that most or everyone agrees are safe. They are in the order in which people believe they benefit transmission reliability in this particular car:
1. Upgrade valve bodies
2. Replace stock ATF cooler with a low flow resistance cooler
3. Upgrade TCU with unit from ecutune.com
4. Switch to synthetic ATF and do a partial drain and fill every 2-3 OCIs
5. Increase the resistance of the transmission resistor to 15-20 Ohms
6. Add switch to engage power mode
I specified a low flow resistance cooler because most people agreed that heat is not the problem but lack of fluid flow and pressure is. There was strong agreement that high ATF temps were a symptom of an already failing tranny and not the cause of a failure. However, high ATF temperatures can cause other parts to fail even before the actual problem causing the heat fails itself. So, increase pressure, increase flow, change to a good ATF and/or use a good ATF additive, change the ATF regularly and keep it cool.
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Tony
1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads
2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil
2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil
1992 Red Ferrari 348 ts, 82,XXX, Redline everything
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