I'm getting ready to pull the trigger on the manifold swap and lost the email Allen sent on the subject. When I swap out the manifold is a retune absolutely required? Not changing anything else and hope the current tune would get me to SA to go 2bar SD.
'02 Silverado Z-71, STS Turbo @ 10psi, TRT Custom FMIC, Comp 222/218/115 cam, Patriot Gold Dual Springs, Hardened Push Rods, 60# injectors, 160 Thermo, FAL E-Fans, Nelson Harness, Yank 2600, Built Rock On VacMod 60E Transmission,Walbro 255 fuel pump, ASP Underdrive pulleys, Gibson Shorty Headers all polished up with a Nelson Street Tune