Continue diagnosis using the applicable Repair Manual. I have tuned my engine with HP tuners but I have a T56 so this is my first time diving into the transmission side of the software.ġ.2.15afterchanges.hpl Noah1.1.15trans#2.hpt trans problems. Does the vehicle exhibit a lack of power, high RPM shift point at 2 3 shift, or hesitation in low gears YES Continue to step 2. I would really like something like tactrix for it because then you could upload the latest tcm logics and such. I have attached the tune, scan of driving and config file. Nothing yet, although in techstream all you can really do is reset it to relearn the transmission. Based upon year, make, model and the extent of the original damage, the computer relearn process could be as simple as driving the vehicle using specific apply and shifting sequences. Once done, the transmission should shift as smooth as silk. I removed all of the torque management based on what I read here and the fact that the transmission is built. At that point, a computer relearn (reset shift adapts) will be required to complete the job. I have read through a few of the transmission tuning guides and have made improvements but it feels like the shifts could be better. The transmission was rebuilt and upgraded after the engine was rebuilt and claimed to be able to handle ~500hp from the shop that built it. The transmission was slow to shift 1>2 and then would quickly shift through the rest of the gears and sit in 4th. It will 'memorize' how far you put down the gas pedal and decide where. You will also have to re program the ore set radio stations and the clock. Could you please let me know what to try in order to change shifting points Thanks. Also is there a way to remove rev limit or allow fuel cutout Attached is a log with various loads. I am trying to force shifting at 5800 RPM, now it shifts at 6100 RPM. He had a mail order tune and felt very sluggish. Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil. To reset the auto up & down feature on the drive and tailgate window, roll all the way Down and back up and hold or 5 seconds after window is fully up. We managed to get it almost tuned, but the truck shifts like crap specifically 2-3 shift.
#Reset shift points toyota techstream professional
The engine was rebuilt and has a TSP 228R 112LSA, Prof Products "Ls6" manifold, Professional products 85mm throttle body. Now to go log an easy cruise with it and see where the AFR is at.I am helping a friend with a 1999 Chevy Silverado 1500 4x4 with 5.3/4L60E.
If anyone has better info or corrections, please share.Thank you so much for this got my HP tuner today and got my Tundra idling with 750cc injectors. Whenever possible, I would scale injector constants rather than try to calculate new ones. Using our earlier figures for injector sizes, the injector constants calculated are ~17% too low relative to the stock values, so multiplying the calculated Injector Constant by 1.20 would arrive at a reasonable baseline (fathoming a guess, the error may be due to other corrections baked into the Injector Constant). Injector Constant = 1 / (10 * Injector Flow Rate * (Stoich AFR)^2) Injector Pulse Width = Cylinder Airmass / (Injector Flow Rate * Stoich AFR)Ĭylinder Airmass / (Injector Flow Rate * Stoich AFR) = 10 * Cylinder Airmass * Stoich AFR * Injector ConstantĪ little more algebra with the above terms, we finally arrive at: To estimate a totally unknown injector constant, you can use a formula for fuel mass:Ĭylinder Airmass / Stoich AFR = Injector Pulse Width * Injector Flow Rate
Note that this calculated Pulse Width does not account for any corrections (Injector Offset, Load Mult, fuel trims, PE, etc.). Injector Pulse Width = 10 * Cylinder Airmass * Stoich AFR * Injector Constant Buy Toyota Techstream Diagnostic Cable Mini VCI J2534 OBD Scanner V2.0.4 for Toyota Lexus TIS Techstream (Updated Version) online at an affordable price.
#Reset shift points toyota techstream code
Because the code does not go up and down. Because it's not totally clear what the Injector Constant is relative to, I went and did some logging to back out the logic here's my current best model: By modifying the code you can actually make the transmission 'select' 5th gear after 2nd.
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