Quote:
Originally Posted by epkmvuoq
I know this is old but I guess I did not get it,,,,,,,,, I have been told that it makes zero horsepower. I have also been told by thunder racing that it surely will make horsepower as their testing on there dyno has shown conclusively. Please give me your comments. Maybe they want to sell so they will tell you exactly what you want to hear. Borla says they make horsepower also,,maybe for the same reason. I BELIEVE IN THIS FORUM FOR THE TRUTH !!!
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May need to mention,,,,,, cat back