Catalyst CEL Free Guide:

• This is NOT a guarantee, only a guide to help make the best decision to be check engine light free and not require tuning.
• Brand new cars CAN have updated 02 Sensor tolerance calibrations that may or may not change the outcome.
• When wanting to be engine light free and not tune using the LARGEST catalyst possible is advised.
• It will be updated regularly.

Acura:

• NSX – HJS 130mm, Gesi GEN2 5”

Alfa Romeo:

• Giulia QV – HJS 130mm, Gesi GEN2 5”
• Stelvio QV – HJS 130mm, Gesi GEN2 5”

Aston Martin:

• Vantage 4.0 - HJS 130mm, Gesi GEN2 5”
• DB11 4.0 - HJS 130mm, Gesi GEN2 5”

Audi:

• C7/D4 4.0t - HJS 121mm, Gesi GEN2 4.5”
• B9 S4/S5/SQ5 – Gesi GEN2 6”
• B9 RS4/RS5 – Gesi GEN2 5”
• Q7/Q8 E839 3.0t Single Turbo - Gesi GEN2 6”
• C8 A6/A7 – Gesi GEN2 6”
• C8 S6/S7 - Gesi GEN2 5”
• C8/D5 RS6/RS7/S8 – HJS 130mm, HJS 143mm, Gesi GEN2 5”, Gesi GEN2 6”
• RSQ8/SQ8/SQ7 – HJS 143mm, HJS 130mm, Gesi GEN2 5”, Gesi GEN2 6”

Bentley:

• Bentayga 4.0L– HJS 143mm, HJS130mm, Gesi GEN2 5”, Gesi GEN2 6”
• Continental GT/Flying Spur – Gesi GEN2 5”

BMW:

• G80 M3/M4 – HJS 121mm, Gesi GEN2 4.5”
• X3M/X4M – HJS 121mm, Gesi GEN2 4.5”
• F90 M5 – HJS 130mm, Gesi GEN2 5”
• F10 M5/M6 F12 F13 F06 - HJS 121mm, Gesi GEN2 4.5”
• E70/71 X5M/X6M - HJS 130mm, Gesi GEN2 5”
• F85/86 X5M/X6M - HJS 130mm, Gesi GEN2 5”
• F95/96 X5M/X6M – HJS 130mm, Gesi GEN2 5”
• M8 – HJS 130mm, Gesi GEN2 5”
• M50i/S63 – HJS 130mm, Gesi GEN2 5”
• M60i/S68 - HJS 130mm, Gesi GEN2 5”
• B58 - HJS 130mm, Gesi GEN2 5”

Ferrari:

• F8 Tributo – HJS 130mm, Gesi GEN2 5”
• F12/812 - HJS 130mm, Gesi GEN2 5”
• 488 – HJS 130mm, Gesi GEN2 5”
• SF90 - HJS 130mm, Gesi GEN2 5”

Lamborghini:

• SVJ – Gesi Gesi GEN2 4.5”, HJS 121mm
• Urus – HJS 143mm, HJS 130mm, Gesi GEN2 5”, Gesi GEN2 6”

Maserati:

• MC20 - HJS 130mm, Gesi GEN2 5”

McLaren:

• 720S/765LT – HJS 130mm, Gesi GEN2 5”
• 570/540/MP4-12C – HJS 130mm, Gesi GEN2 5”
• GT - HJS 130mm, Gesi GEN2 5”

Mercedes:

• M256 – HJS 143mm, Gesi GEN2 6”
• M276 – HJS 121mm, Gesi GEN2 4.5”
• M278 – HJS 121mm, Gesi GEN2 4.5”
• M133 – HJS 121mm, Gesi GEN2 4.5”
• M139 – HJS 130mm, HJS 143mm, Gesi GEN2 5”
• M157 – HJS 130mm, Gesi GEN2 5”
• M176/177/178 – HJS 130mm, Gesi GEN2 5” 

Porsche:

• 997/991 911 – HJS 130mm, Gesi GEN2 5”
• GT2RS - HJS 143mm, Gesi GEN2 5”
• 992 911 – HJS 143mm, Gesi GEN2 5”
• 992 Carrera – HJS 143mm, Gesi GEN2 5”
• Cayenne E839 3.0t Single Turbo - Gesi GEN2 6”
• Cayenne S 2.9L- Gesi GEN2 5”
• Cayenne Turbo/GT/S 4.0L- HJS 143mm, HJS 130mm, Gesi GEN2 5”, Gesi GEN2 6”
• Macan Turbo/GTS 2.9L- Gesi GEN2 5”
• Panamera 971 Turbo– Gesi GEN2 5”

Toyota:

• A90/91 Supra - HJS 130mm, Gesi GEN2 5”