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the guy above you knows how much of difference it makes, i used to walk him all the time. he was so pissed because we were pretty much equal mods but he had a 2.9 on gm2 i was just gm2. he came over one day i tapped it and hes been right next to me since lol!
Yea mine went out when they were dyno tuning it. They couldn't figure out why it was only putting down 197 whp with 2.8 and 60's.
Needless to say they replaced the IC Pump and it put down whats in my sig