We are doing a year end sale on our AMG GT 4.0 litre air intake kits and also just performance high flow air filters. Air intake kit are regularly $450.00 and on special for $350 plus free shipping in the mainland USA. Kits come with high flow air filters. If you just need high flow air filters, they are on sale for 139.00 per set and free shipping (list price 175.00) . Easy to install and keeps the factory look. Message us or order online.

http://ultimatepd.com/2016-and-up-me...-kit-c190.html
Picture of air box inlet.


Factory air box with black anodized kit installed with high flow air filters.



Picture of factory air box with black aluminum anodized kit installed with high flow air filter.

 

What's the horsepower increase on the various GT variants? Is it measurable or seat of the pants?

 

Customer that have dynoed over the years and have seen 18 to 26 RWHP gains with these kits. More power the engine makes from factory or with tune, the larger the gains, as air demand goes up.

 

This mod really works along with secondary resonator delete. Increased volume of air both ways.

 

already have the filters. can you share or pm me the price of just the inserts?

 

The inside of our airbox does not look like that. The filter doesn't have that blockage for the gt.

 

Somebody try on a GT?

 

Have you a picture?

 

 

Thanks buddy
So dont need them

 

 

 

 

 

Stock filter is fat as hell. I replaced mine with weistec filters which I prefer because they are dry and they about half the thickness so that picture is probably accurate

 

 

 

 

The AMG GT filter box has a good inlet opening but the back of the lower box where the air goes up through the filter and into the outlet for the turbos, is where oem thicker filter restricts flow or reduces flow. The UPD kit increases volume in the box to the filter and with the high flow air filter included in the kit, you pick up more air flow and power. Best bang for the buck, is to upgrade to air box kit of high flow filters at 10K miles, when you would need a filter change anyway. the people that want shear power, just upgrade right away. www.ultimatepd.com Filter and kits on special right now. Our filters use a polyurethane seal vs the soft rubber that can tear like K&N normally uses.

 

Fluid dynamics is a pretty complex topic and takes a ton of resources ( re $$$$)
Out of curiosity, what tools did you use besides visual observation to come to those conclusions?
hot wire anemometers? flow bench modeling tools?
The results are often counter intuitive.

 

You are right about the basic tools you mentioned, they would be counter intuitive on their own but are tools that can be part of a process. There are two basic groups of car owners, the ones that never mod their sports car as they feel the factory made it to perfection and the rest of us, that live to never settle for less and keep putting our own mods on everything we own . Air box and filter mods have been a basic power upgrade on most every combustion engine for so long that it is en-grained in the basic understanding of the general public now. Engine tuning, now that is harder for many to understand what is all being changed but then again exhaust flow has also become basic. The factory does not design air boxes for max flow, as they have to many other parameters/regulations that lead them to compromise and leave room on the table for aftermarket power gains. As you can see from the people posting above that just changed filters , they understand and are happy with the change but they are not from the group that my car MFG made it perfect. .

In short and MOST members know this stuff on the forums, as it has become basic understanding over 40 years of EFI engine mods. We and many others use assorted static and live testing tools/ methods to calculate gains and the engine ECU has millions of dollars in software design built into its sensors that you can harness with software tools, plus there is live road testing, timed testing dyno testing and track testing and all can be done with live feedback. Visual is also an important tool , as looking for restrictions and even simple dirt patterns on a used filters can be a useful tool in part of the process. No matter what, if you are a person that believes their MFG made it perfect, then no amount of info matters.

My 2017 Audi R8 plus has one of the best OEM air boxes that I have seen but the oem filter is restrictive but this is not the norm on factory air box as. If I add tune and turbos, then the box will be restrictive, so having room to grow on is also important for those that may add tune or even down pipes to thier AMG GT, as flow demands change with mods.

 

I went with the Weistech filters for my 18 GTS. Since they are thin they dont protrude into the path of the intake tube. I can see where having more volume in the box may be of an advantage. Do you sell the spacers only?

 

PM sent.

 

I purchased the UPD spacers for both my CLS M157 and my GTS M158. I noticed the difference right away. I now have my GT kit installed on my GTR.

Can you send me a price on the spacer only for the GTR? I feel my GTS spacers were a really tight fit on the GTR intake box (not sure why)