I didn't figure it would need much, if any but I wasn't sure. I'm currently running the SRL so I called Gearhead and they said there wasn't anything to do.
I had mine tweaked a couple months later just to see if there was any difference. All I could tell was there was a hint better spool up. If the tweaks are free, go for it, if not, save your money.
I'm going to order Wildman's tune for the turbo to compare it to my SRL, but wanted to know if I should have the SRL tweaked first to get the fairest comparison.
I had mine tweaked a couple months later just to see if there was any difference. All I could tell was there was a hint better spool up. If the tweaks are free, go for it, if not, save your money.
I did because my Stage 1 initially had the cast wheel. After changing to the billet wheel, no changes were necessary and I've gone between a number of tunes (some not even written for the Stage 1), so I can attest to what Bryan (Tuscany) says above.
Mine has the cast wheel as well, but it never surged. Just farted a lot when it was cold. Other than that, I couldn't complain. It does, on my my truck anyway, seem to make air until 3800 rpms with stock sticks, then falls off. The stocker and pmax gave out around 34-3500 rpms. I would guess the billet comp wheel can make air to 4000 rpms.
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