Well I'm no expert and I did not see your mods. But my understanding is that a chip will most likely yeild nothing on a stock car. Obviously if you were already running a 13.1 thats alot quicker than stock. This is where the chip should actually help. However it only gave you 1 tenth? Thats not anything to write home about. If anything it most likely set the timing to the optimum setting rather than where you had it.
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