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M178 tuning options

UKGTC

New Member
Joined
Feb 7, 2025
Messages
18
Location
Hampshire
Car
AMG GT C
I have a the M178 engine with the same turbos, uprated cooling and dry sump as the GTR. Is there anyone on here with tuning ideas, especially anyone that has a GTC or GTR they have modified?

Currently I have a set of 200 cell downpipes with the GPF delete ready for installation. The cat 6 versions are about £1600 which I thought was reasonable considering the build quality and heat protection. There is a cheaper one at £1350 but it is cat 5 and not guaranteed to pass the emissions test.

MTC AMG GTC downpipes with 200 cell.webp
 
The two most often recommended remappers of Mercedes AMG's are MSL Performance in Birmingham and GAD in Essex. Both have their fans and you'd be safe leaving the car in their hands.
I've read too many negative comments about DMS in Southampton to recommend them.

 

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