Car dealers stand to gain as their auto makers look to get in greater touch with the tuner crowd.

More auto makers accessory offerings could bring more traffic into the showroom and increase consumer awareness of customizing vehicles.

Yet relying solely on auto maker-installed accessories may mean dealers are missing a big part of the market.

While auto makers can increase the customer awareness of accessories, they sometimes can limit the number of suppliers their dealers work with, and affect the bottom line as a result.

SEMA says dealer-installed accessories drive significantly more profit than do factory-installed accessories — as much as 40%-60% more in some cases.