I don't believe it's an issue with the tuner. I went to rob at topspeed Motorsports. I gained 15whp with his tune. He's a very reputable tuner that worked for Z1 for a long time before he left to start his own tuning company. He tuned my friends 370 that uses the same setup I use and gained 25whp ending at 325. My a/F ratios are perfect. Even my friend who owns a Dyno commented on how spot on it is. I'm just not sure if I should try to take it some where else and try to tune the car again.
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