I have a 5.3 w a magna charger,
should i invest in a Nelson tune or Pacesetter long tubes first?
which will yield better results?

 

Nelson Tune 100% then headers

 

nelson tune first

 

wait4me tune

 

Sweet, nelson tune it will be. hey txsilverado, ill let you know if its still a dog.

 

a link for you gmc2

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FARMTRUC is allen nelson and $300 is a hell of a deal for one of his tunes. mine was 425. cant beat a hands on street tune

 

IMO, headers first then Allen can tune for the improved flow. I think he can tweak the A/F ratio alittle more. I did all of my mods first then got the tune. Some people think that this is better because you can get more out of the tune with more mods done to it..

 

BOTH! j/k tune it 1st.

 

Both would be ideal, however if it is an (in-person) dyno or street tune I would definitely go nelson first. Just have the tune updated for the exhaust when you add it later.