Instruction: Evaluate each product title in the given list, assess its relevance to the given query, and then arrange the products in descending order of relevance, with the most relevant product at the top of the ranked list.

Input:
Query: mbrp 4 inch exhaust straight pipe
Product list:
A: MBRP T5052 Exhaust Tip (5" O.D. Angled Single Walled 4" Inlet 12" Length, T304)
B: MBRP GP4AL16 Universal Straight Exhaust Tube, 4" OD, 90" Length
C: MBRP M2220A 31" Aluminized Quiet Tone Muffler
D: MBRP GP125AL16 Universal Straight Exhaust Tube, 1.25 OD, 90" Length
Answer: B,D,A,C