Is there any advantage or negetive effects from swapping the ABC control that came with the Utec with a MBC such as the Hallman Pro Boost Control? Also, I'm running a stage 2 map with cat-less up-pipe , TXS Stealth Back and stock axle back. Is the stock muffler to restrictive for this or is it fine for now?

 

I used a Greddy Electronic Boost controller with my Utec and there were no problems. I'd change the exhaust though.

 

Thanks, I'm definatly getting some back-pressue/backfire in the exhaust during light throttle shifts.