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I fulfilled a bucket list item and decided to do a cam and headers on my 03 6sp coupe. Blackwing intake, BTR LS1 Stage 2 v2 cam (with supporting mods), Speed Engineering headers with high flow cats. Pretty happy with the results and the sound/exhaust smell. Drivability is a 9/10 compared to stock. Highway fuel economy is only slight reduced but around town driving is down to 11/12. Is this normal? Also I post the dyno graph, how does this look based on everyone's experience?
As mentioned above its right on par for STD corrections which are typically 4% higher than SAE corrections. So, your numbers are slightly inflated. Which is why most folks require their tuner to use SAE corrections to not inflate their number. Even at 390whp/370wtq a manual c5 is still a really fun driver. Enjoy!
BTR Stage 2, Long Tubes, High Flow Cats
