Unfortunately, I can't leave anything alone and had to modify already. I've had my Tein's & COBB Stage 2 since Monday and I am very pleased with the results. With only 600 miles on it, I'm being very careful to break it in porperly, but it's very tempting to not to test it. Way too soon to do a true review, but I can clearly feel the low end torque gain. I'll give another update in a few weeks, when it's broken in.