Flamemaster66 Posted September 23, 2020 Share Posted September 23, 2020 from all the reading I have done , I don't see anyone putting headers on the R50 3.3 ....I am wondering if they fit because they are all over ebay for less then 100 and thats the cheepest upgrade I have seen yet for a pathy !!! Link to comment Share on other sites More sharing options...
Mr_Reverse Posted September 24, 2020 Share Posted September 24, 2020 Biggest challenge is that the 3.3 has the cats mounted on the manifolds. Replacing them with headers makes compliance with local emissions laws problematic. The stock manifolds aren't terribly restrictive, the big restriction is the small valves and ports in the heads. So swapping to headers really isn't a popular thing for the old trucks. Link to comment Share on other sites More sharing options...
Flamemaster66 Posted September 24, 2020 Author Share Posted September 24, 2020 Thank you !!! That will eliminate that upgrade , now to find out more on swapping out MAF with one from a maxima ....another idea that I dont see doing much for performance. Sent from my SM-N960U using Tapatalk Link to comment Share on other sites More sharing options...
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