L99 to LS3 tune ECM - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

PlymouthBarracuda · 06-19-2023, 03:28 AM

Is there any websitre where I can buy ready to use ECM firmware with already done L99 to LS3 modifications ? I don't have 'HP tuners' but can upload existing firmware through OBD port

I would buy the GPI conversion kit with LS SS4 cam however here in London it is very difficult to find someone who will do the modification of the ECM.

1JEWLDSSRS · 06-19-2023, 11:50 AM

Try to contact "acammer" on here. He is a GPI rep and a guru with our Camaros. He can probably get you going with what you need.

06-19-2023, 03:28 AM	#1
PlymouthBarracuda Drives: 2011 Chevrolet Camaro SS L99 AT Join Date: Oct 2021 Location: London, UK Posts: 81	L99 to LS3 tune ECM Is there any websitre where I can buy ready to use ECM firmware with already done L99 to LS3 modifications ? I don't have 'HP tuners' but can upload existing firmware through OBD port I would buy the GPI conversion kit with LS SS4 cam however here in London it is very difficult to find someone who will do the modification of the ECM. __________________ 2011 Chevy Camaro SS AT L99 / Stock / Daily Driver 1972 Plymouth Barracuda RB V8 3X2-barrel Holley R-4382A/R-4375A/R-4383A (Hamtramck) / Stock / Weekend Driver

06-19-2023, 11:50 AM	#2
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 14,043	Try to contact "acammer" on here. He is a GPI rep and a guru with our Camaros. He can probably get you going with what you need. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.