[SOCAL.M6.ZLE]

Originally Posted by Robster

I run the Proflex Commander Bluetooth app only. No gauge.





I haven't had any issues with the cats or anything else (and everything is stock on the exhaust side) for over a year and a half now with street and track use. To be clear though, the LT4 CANNOT (with the stock high pressure fuel pump cam lobe) run above 60% ethanol. So, no e85... I run E55 tops (using the Bluetooth mixture app mentioned above) as directed by my tuner.

Thanks for the feedback Robster... Ill have to check out that app... Can i ask who tuned your car, and if you would recommend them?