Jacob1992 0 Report post Posted August 22, 2018 Thinking about changing my pulley from a 3.2 to a 3.0. Will I have to get retuned? Living in rural Manitoba Canada makes it very difficult. Guy I bought the truck from said it was tuned at a performance shop before he bought it. The hand held tuner isn't with the truck. Has 202,000 km on it and is a weekend cruiser and sometimes daily driver. Has Kooks long tubes, high flow cats, airaid intake, msd wires, built trans. Don't have a boost gauge on the truck right now. Really cant afford to take the risk of hurting the motor. Quote Share this post Link to post Share on other sites
8hnpSS 29 Report post Posted August 24, 2018 Of course youl need a re tune. Quote Share this post Link to post Share on other sites
Blown 346 72 Report post Posted August 28, 2018 (edited) Re tune, but you can drive it, you just have to watch the A/F ratio. Edited August 28, 2018 by Blown 346 Quote Share this post Link to post Share on other sites
2003_SuperSport 17 Report post Posted August 29, 2018 Thinking about changing my pulley from a 3.2 to a 3.0. Will I have to get retuned? Living in rural Manitoba Canada makes it very difficult. Guy I bought the truck from said it was tuned at a performance shop before he bought it. The hand held tuner isn't with the truck. Has 202,000 km on it and is a weekend cruiser and sometimes daily driver. Has Kooks long tubes, high flow cats, airaid intake, msd wires, built trans. Don't have a boost gauge on the truck right now. Really cant afford to take the risk of hurting the motor. Me personally. I would put on the next one up from the lowest pulley you can put on for max boost and tune it from there. If its a radix SC instead of a 2.75 go with a 2.8 and tune it there so you don't have to continue to get retunes every time you want a power increase. I also us my tow haul button as a performance bump for racing. Quote Share this post Link to post Share on other sites
Jacob1992 0 Report post Posted September 7, 2018 Thanks for the info guys, guna try pricing out some tuning places. Quote Share this post Link to post Share on other sites