You're right, of course, but, looking strictly at the engine designs and spec sheets, independent of market demand and tuner interest, a clear answer emerges: the C63 AMG.wait and see, it is impossible to tell until we see the tuner market response to the release of each of the cars (excluding the RS4, of course)
I agree, it's the same 6.2 liter engine in all, I think a software tweak is all it needs to get good HPYou're right, of course, but, looking strictly at the engine designs and spec sheets, independent of market demand and tuner interest, a clear answer emerges: the C63 AMG.
The Audi RS4 and BMW M3 are highly tuned (100 hp-per-liter or more), high redline (circa 8000 rpm) engines right from the factory. Thus, they're almost as "optimized" as can be. In comparison, the Lexus IS F is less highly tuned and lower-revving, but its high compression ratio (11.8:1) and the direct-and-port-injector combo make tuning a bit tricky as well.
The Mercedes C63, on the other hand, takes an older-school, almost American muscle car engine design philosophy: a large, relatively low-stressed engine with port injection only. Further, much as Porsche always ensures that the cheaper and lighter Boxster and Cayman will never be, from the factory, faster than the 911, Mercedes micromanages the power output of the 6.2-liter AMG V8 so that it's less powerful in the lighter, smaller and cheaper bodies, and more powerful in the larger, heavier, pricier cars. Specifically, the 6.2-liter AMG V8 produces 451 hp in the C63; 475 in the CLK63; 507 hp in the E63 and CLS63; 510 hp in the ML63; and 518 in the S63 and CL63. Thus, unless underhood space is a major factor, it shouldn't be particularly difficult to get the C63 AMG to approach S63/CL63 levels of power output.
piggy-back, or in most cases, standalone engine management, but the IS-F presents atypical problems for these as well because of the dual injection system that combines use of both port injection and direct injection.How do people tune those monster MK4 Supras, some kind of piggyback system? I agree that there's not much desire to tune Toyotas, except those with 7MGTEs or 2JZGTEs...but that's so old school that tuners are way past that now in terms of complexity.
Any of them. How deep are the pockets and how creative is the owner? I've got alot more done to my car than many on the board here, but then there are many with a considerable amount more done as well.Any guesses on which can be modded the most?