Hey Guys,
I had some bad news recently, my fan for cooling the radiator died in heavy traffic and my car overheated badly to the point I thought I had cracked a cylinder head!
Luckily I got away with it but my gearbox developed a bad leak and I needed a new pan.
So I thought, while the gearbox is open why not do a mod I've thought about for a while.
I did some research as to how to modify or map the transmission for faster shifts. The solution I found was switch to Blue Solenoids to replace the brown topped ones in there.
This has a downside though which is firmer shifts like a manual transmission making the gear change jerk a bit when cruising.
The payback to me was greater than the loss of comfort so I went ahead and ordered 2 Blue solenoids (part number 240-270-0089) to replace the Brown topped ones in my car.
They cost £175 each and had to be ordered from Germany as the Dealer doesn't stock them. This is actually a Maybach part which has a larger opening for the gearbox fluids to travel through enabling faster shifting with no other mods applied!
I can report back that my car has been transformed!
Gear changes are TWICE as fast and my car pulls like a train!
The whole demeanor of how it used to feel and drive has gone up two fold.
I am very happy as the car seems to have gained more power! Maybe because the gear changes are instant? I don't know, but she flies faster!
A warning though to those that like smooth gear shifts when cruising, this is not the mod for you.
I've noticed that when changing up or down at town speeds the transmission has a tendency to jerk slightly especially when coming to a slow stop. It's not too bad, but you definately feel the gear change.
Some people have posted that the quality is OK, others say that after 1000mi or so it gets better.
Foot hard on the pedal and you don't feel the shifts, just seemless power. Hard braking or breaking slightly firmly produces the same effect, so the shift smoothness is speed dependent.
Manual shifts are the same as before except just faster.
I've read that a TCU Tune will smooth the shifts when cruising. I may try that at a later date to see if I can benift from anything else.
One thing though, this mod only works on Tiptronic Transmissions from 2000-2004 as from 2005 the gearbox solenoids were switched out to the blue ones for AMG cars atleast!
For those handy with tools here's a paste of how to do it yourself.
http://www.cherokeesrt8.com/forums/s...ad.php?t=57949
__________________
" Star in the hood. "
I had some bad news recently, my fan for cooling the radiator died in heavy traffic and my car overheated badly to the point I thought I had cracked a cylinder head!
Luckily I got away with it but my gearbox developed a bad leak and I needed a new pan.
So I thought, while the gearbox is open why not do a mod I've thought about for a while.
I did some research as to how to modify or map the transmission for faster shifts. The solution I found was switch to Blue Solenoids to replace the brown topped ones in there.
This has a downside though which is firmer shifts like a manual transmission making the gear change jerk a bit when cruising.
The payback to me was greater than the loss of comfort so I went ahead and ordered 2 Blue solenoids (part number 240-270-0089) to replace the Brown topped ones in my car.
They cost £175 each and had to be ordered from Germany as the Dealer doesn't stock them. This is actually a Maybach part which has a larger opening for the gearbox fluids to travel through enabling faster shifting with no other mods applied!
I can report back that my car has been transformed!
Gear changes are TWICE as fast and my car pulls like a train!
The whole demeanor of how it used to feel and drive has gone up two fold.
I am very happy as the car seems to have gained more power! Maybe because the gear changes are instant? I don't know, but she flies faster!
A warning though to those that like smooth gear shifts when cruising, this is not the mod for you.
I've noticed that when changing up or down at town speeds the transmission has a tendency to jerk slightly especially when coming to a slow stop. It's not too bad, but you definately feel the gear change.
Some people have posted that the quality is OK, others say that after 1000mi or so it gets better.
Foot hard on the pedal and you don't feel the shifts, just seemless power. Hard braking or breaking slightly firmly produces the same effect, so the shift smoothness is speed dependent.
Manual shifts are the same as before except just faster.
I've read that a TCU Tune will smooth the shifts when cruising. I may try that at a later date to see if I can benift from anything else.
One thing though, this mod only works on Tiptronic Transmissions from 2000-2004 as from 2005 the gearbox solenoids were switched out to the blue ones for AMG cars atleast!
For those handy with tools here's a paste of how to do it yourself.
http://www.cherokeesrt8.com/forums/s...ad.php?t=57949
__________________
" Star in the hood. "