GLC 43 Enclosed Intake options????
Thank you in advance!




https://www.mst-performance.com/products/mb-c4301l
There are heated (no pun intended) arguments on this board about the performance gains of this system vs. what I like to call "the platform standard" BMS intake system. I went through a similar bout of research before purchasing my BMS system for my new to me 43. In the end, the OEM intake system is far better engineered than anything the aftermarket has to offer for this engine platform but is primarily aimed at reduction in intake sound. Once you install and aftermarket intake system and experience in daily driving you will quickly see why. I'm not entirely convinced (in the absence of any shred of dyno proven evidence otherwise) that the aftermarket intakes are really worth any usable real horsepower anyway. Claims are upwards of 10-20hp I think but it does make all kinds of boosty boy sounds. Rarely (none that I have found actually) does anyone perform any kind of A and B testing of the intake alone with numbers to back it up to determine what the intake by itself is capable of adding. Most I've seen (myself included) perform the intake upgrade at the time of tuning (piggy back or ecu flash) so it's really impossible to tell how much of the gains are from the tuning and how much additional the intakes add on top of that. As for the downpipes, I'm about to purchase the Logos Engineering catted DP due to the pros/cons ratio vs. the amount of HP actually gained from catless. Again, the gains are negligible at best and feedback across the board is how terrible it smells (I've run a car on race pipes before so I'm no stranger - doesn't bother me) and most important - how it changes the sound output of this motor. I've listened to plenty of vides and the high pitch rasp that the M276 emits as a result of no cats is just not appealing to me personally. Not for an extra 4-5hp anyway. Lastly, the issues of dealing with emissions regulations and potential for check engine lights just makes the Logos DP's so much more appealing. Anyway, since you're new to this platform, as am I, let me forewarn you - as a person who has owned and modified cars since I started driving (94) be prepared for some frustration. This is not a popular platform to work on or work with and support for it is sparse. I spend a lot of time over on the C43 board since they seem to do a lot more performance stuff on the sedan (as a proportion of owners go) than the GLC guys do. This board is generally ruled by the big dog 63's (as they should!). Good luck and post up as you go - I'm dealing with some very frustrating results of a JB4 and am waiting to post results of testing of that myself. Been to the track 3 times now for test and tunes and the results have been...how shall I say this....interesting.
Good luck and I hope you get your tuning issues figured out and thank you again for taking the time out to set me straight so I can be warned of what is available and also worth putting time and effort into.




Good luck and I hope you get your tuning issues figured out and thank you again for taking the time out to set me straight so I can be warned of what is available and also worth putting time and effort into.





Sorry to threadjack OP!
Trending Topics
Sorry to threadjack OP! 
The Best of Mercedes & AMG


