This is ONLY a guide to help make the best decision possible to be check engine light free and not tune.
We have preselected catalyst that we feel work best for the platform. When comparing us to others remember we tell you the size while also using the largest size possible in the space given.
- 100 cell HJS Race Cats are available on request
Newer 2023+ cars CAN have updated 02 Sensor tolerance calibrations that may or may not change the outcome.
- This list will be updated regularly as we see fit.
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:
- DB11 4.0 - HJS 130mm, Gesi GEN2 5”
- Vantage 4.0 - HJS 130mm, Gesi GEN2 5”
Audi:
- B9/B9.5 S4/S5/SQ5 – Gesi GEN2 6”
- B9/B9.5 RS4/RS5 – Gesi GEN2 5”
- C7/C7.5/D4/D4.5 4.0t - HJS 121mm, Gesi GEN2 4.5”
- C8/C8.6 A6/A7 – Gesi GEN2 6”
- C8/C8.5 S6/S7 - HJS 143mm, Gesi GEN2 6”
- C8/D5 RS6/RS7/S8 – HJS 143mm, Gesi GEN2 6”
- 4M/4M.5 Q7/Q8 E839 3.0t Single Turbo - Gesi GEN2 6”
- RSQ8/SQ8/SQ7 – HJS 143mm, Gesi GEN2 6”
Bentley:
- Bentayga 4.0L– HJS 143mm, Gesi GEN2 6”
BMW:
- B58/B58N/B58X - HJS 130mm, Gesi GEN2 5”
- F80 M3/M4 - HJS 121mm, Gesi GEN2 4.5"
- G80 M3/M4 – HJS 121mm, Gesi GEN2 4.5”
- X3M/X4M – HJS 121mm, Gesi GEN2 4.5”
- F10 M5/M6 F12 F13 F06 - HJS 121mm, Gesi GEN2 4.5”
- F90 M5 – HJS 130mm, Gesi GEN2 5”
- G90 M5- HJS 130mm
- 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”
- F9X M8 – HJS 130mm, Gesi GEN2 5”
- M50i/S63 – HJS 130mm, Gesi GEN2 5”
- M60i/S68 - HJS 130mm
Ferrari:
- 296GTB - HJS 143mm
- F8 Tributo – HJS 130mm, Gesi GEN2 5”
- F12/812 - HJS 143mm
- 488 – HJS 130mm, Gesi GEN2 5”
- SF90 - HJS 130mm
Lamborghini:
- Aventador - Gesi GEN2 4.5”, HJS 121mm
- SVJ – Gesi GEN2 4.5”, HJS 121mm
- Urus – HJS 143mm, Gesi GEN2 6”
Maserati:
- MC20 - HJS 130mm, Gesi GEN2 5”
McLaren:
- 570/540/MP4-12C – HJS 130mm, Gesi GEN2 5”
- GT - HJS 130mm, Gesi GEN2 5”
- 720S/750S/765LT – HJS 130mm, Gesi GEN2 5”
Mercedes:
- M133 – HJS 121mm, Gesi GEN2 4.5”
- M139 – HJS 130mm, Gesi GEN2 5”
- M139L - HJS 143mm, Gesi GEN2 5"
- M157 – HJS 130mm, Gesi GEN2 5”
- M176/177/178 – HJS 130mm, Gesi GEN2 5”
- M256 – HJS 143mm, Gesi GEN2 6”
- M276 – HJS 121mm, Gesi GEN2 4.5”
- M278 – HJS 121mm, Gesi GEN2 4.5”
Porsche:
- 997/991 Turbo – HJS 130mm, Gesi GEN2 5”
- 991 GT2RS - HJS 143mm
- 992 Carrera – HJS 143mm
- 992 Turbo – HJS 143mm
- Macan Turbo/GTS - HJS 143mm, Gesi GEN2 6”
- Cayenne E839 3.0t Single Turbo - Gesi GEN2 6”
- Cayenne S 2.9L - HJS 143mm, Gesi GEN2 5”
- Cayenne Turbo/GT/S 4.0L- HJS 143mm, Gesi GEN2 6”
Range Rover:
- P530/SV 4.4L- HJS 130mm, Gesi 5”
Toyota:
- A90/91 Supra - HJS 130mm, Gesi GEN2 5”