C219 CLS55 and CLS63, 2004-2010

Flash ECU...any problems

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Old Apr 2, 2009 | 10:09 PM
  #1  
BlackBeast'06's Avatar
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From: Up Sh!T Creek..No paddle :-(
'06 cls 55 amg, '03 Range Rover HSE, 88 Firebird Formula
Flash ECU...any problems

Any ever had any problems after they got their ECU flashed? I'm planning on getting it done but I want to know the pro's and con's of doing this. Note: I don't have any other mods.
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Old Apr 2, 2009 | 11:14 PM
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CLS55 AMG & RRS S/C
no problems at all with my flash.
i would suggest at least getting a larger pulley before doing the flash.
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Old Apr 3, 2009 | 08:54 PM
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From: Up Sh!T Creek..No paddle :-(
'06 cls 55 amg, '03 Range Rover HSE, 88 Firebird Formula
Originally Posted by jikjak
no problems at all with my flash.
i would suggest at least getting a larger pulley before doing the flash.
How much for the larger pulley? Also, what size?

Last edited by BlackBeast'06; Apr 3, 2009 at 09:02 PM.
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Old Apr 9, 2009 | 12:00 AM
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how does the car performed if i want to just get pulley and Tune but no ECU. ??
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Old Apr 9, 2009 | 12:21 AM
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CLS55 AMG & RRS S/C
Originally Posted by BlackBeast'06
How much for the larger pulley? Also, what size?
different sizes and also several different vendors.
best to check out their websites.

try checking out kleemann,LET and VRP
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Old Apr 9, 2009 | 12:23 AM
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CLS55 AMG & RRS S/C
Originally Posted by newguycls55
how does the car performed if i want to just get pulley and Tune but no ECU. ??
that would depend on the pulley size.
if its too large (175-180) i think it would need a tune to run properly and u would definitely need to upgrade the stock heat exchanger.

with smaller pulleys u can get away without doing an ecu tune but tuning would maximize your power gains.
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Old Apr 9, 2009 | 12:46 AM
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Originally Posted by jikjak
that would depend on the pulley size.
if its too large (175-180) i think it would need a tune to run properly and u would definitely need to upgrade the stock heat exchanger.

with smaller pulleys u can get away without doing an ecu tune but tuning would maximize your power gains.
I know this might sound dumb.. but ECU tune is different than Tuning ? is that correct? what do they do when they just tune? without Flahing my ECU and new ECU.

Also with a smaller pulley, what would my expected power gain?
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Old Apr 9, 2009 | 01:50 AM
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CLS55 AMG & RRS S/C
ecu tune, flash and tuning is pretty much the same thing.

when they custom dyno tune your car in person they still end up flashing your ecu with the new and optimized parameters.

someone please correct me if im wrong.
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