W210 gearing. (Lower highway rpm)

STD Tuning Drivetrain W210 gearing. (Lower highway rpm)

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Insane190d

GT2256V

170

12-11-2019, 11:52 AM #1

Hello everyone just curious if there is a direct swap differential I could put in my 1999 e300td to lower my rpm at highway speeds. I've always felt like these cars could use another gear or two... did all of these cars have the same ratio? At almost 80mph it's a 3000rpm, it would be nice to see mid to lower 2000rpm. I also feel it would help spoil the turbo better having a bit more load.. Anyone? Also could I do a manual swap or is there too many electronics to get through for engine to run properly? Thanks

Insane190d

12-11-2019, 11:52 AM #1

starynovy

Holset

338

01-19-2020, 01:36 PM #2

You can only do manual swap. If you swap diffs on automatic car EGS will go into limp mode. It looks after gear ratios.

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Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW

starynovy

01-19-2020, 01:36 PM #2

You can only do manual swap. If you swap diffs on automatic car EGS will go into limp mode. It looks after gear ratios.

Insane190d

GT2256V

170

01-28-2020, 01:27 AM #3

The car has a stage 2 tune with egr and maf delete. T04E turbo. I put 1 size bigger tires on for winter and that lowered my rpm quite a bit!

Insane190d

01-28-2020, 01:27 AM #3

The car has a stage 2 tune with egr and maf delete. T04E turbo. I put 1 size bigger tires on for winter and that lowered my rpm quite a bit!

Petar

7.5mm M pump

459

01-28-2020, 07:36 AM #4

AFAIK the E300 should have a 2.87 diff already, and it should be at around 2400rpm at 120km/h (74 mph). Maybe it's not shifting into 5th gear ??

Petar

01-28-2020, 07:36 AM #4

AFAIK the E300 should have a 2.87 diff already, and it should be at around 2400rpm at 120km/h (74 mph). Maybe it's not shifting into 5th gear ??

Insane190d

GT2256V

170

02-27-2020, 01:58 PM #5

(01-28-2020, 07:36 AM)Petar AFAIK the E300 should have a 2.87 diff already, and it should be at around 2400rpm at 120km/h (74 mph). Maybe it's not shifting into 5th gear ??

Its shifting into 5th. Its probably around 2500rpm. Just seems like it could use another gear. What fuel economy do most get with these? I always seem to be 25 26mpg

Insane190d

02-27-2020, 01:58 PM #5

(01-28-2020, 07:36 AM)Petar AFAIK the E300 should have a 2.87 diff already, and it should be at around 2400rpm at 120km/h (74 mph). Maybe it's not shifting into 5th gear ??

Its shifting into 5th. Its probably around 2500rpm. Just seems like it could use another gear. What fuel economy do most get with these? I always seem to be 25 26mpg

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