I have a 410ci mated to a 4R70W with a Street Edge convertor, 3000 stall. I just got the car back from the installation of the engine and transmission, and am starting the tuning process.
I have a tune from a guy who has a 1995 GT with a 4R70W tranny and he says his transmission is strong and shifts great. I took his tune and entered my displacement and injectors and stuff.
I have 3 issues I need advice on ...
(1) Starting from a dead stop is extremely slow. it seems like the transmission is just barely engaging until somehere near 10 MPH, and then the rpms jump and is shifts into 2nd, at which point it is much more normal.
(2) The speedometer is way off. I can be going about 60 on the highway and my speedo thinks I am going 85.
(3) It seems to not shift into 4th gear. Again, on the highway going about 60, the RPMs are at 3000, which seems way off for 4th gear with 3.73s. It should be closer to 2000 RPM, not 3000 RPM.
I ran a datalog today on my way to work, with the Torque Convertor Lockup State in the payload. Probably about 95% of the time, it was 0 (zero). That doesn't seem right to me.
Any thoughts? Could it be the tune? How can I troubleshoot?
I have a tune from a guy who has a 1995 GT with a 4R70W tranny and he says his transmission is strong and shifts great. I took his tune and entered my displacement and injectors and stuff.
I have 3 issues I need advice on ...
(1) Starting from a dead stop is extremely slow. it seems like the transmission is just barely engaging until somehere near 10 MPH, and then the rpms jump and is shifts into 2nd, at which point it is much more normal.
(2) The speedometer is way off. I can be going about 60 on the highway and my speedo thinks I am going 85.
(3) It seems to not shift into 4th gear. Again, on the highway going about 60, the RPMs are at 3000, which seems way off for 4th gear with 3.73s. It should be closer to 2000 RPM, not 3000 RPM.
I ran a datalog today on my way to work, with the Torque Convertor Lockup State in the payload. Probably about 95% of the time, it was 0 (zero). That doesn't seem right to me.
Any thoughts? Could it be the tune? How can I troubleshoot?