Right now I have ZZPs midlength combo - 2.5" throughout.

Question is - I have 1.5" primaries right now. Would it be worth to either A. Get midlength with 1 3/4" primaries. or B. Get longtubes in 2.5" throughout (they come 1 3/4" primaries).

 

I'd email ZZP and see if they have any dyno comparisons. I know I love how great my long tubes feel up top because that's where they shine but I've never had anything else to compare to to tell you if it's a huge difference or not

 

My tuner said it would be a good idea once i pulley down to 2.8. Probably most beneficial when i get the motor built and TVS

 

anybody else?

 

The long tubes are better yes. But the power gain from what you have to what you want isn't that much. So it's really just up to you on if you want to spend the money.

 

Well im not sure if i should buy longtubes or just see if i can buy the header portion of the midlength in 1.75" primary