Twin-Scroll 3071R VS Twin-Scroll 3076R, anybody have experience with both?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Monooxide · 07-29-2009, 02:22 PM

GT3071R vs. GT3076R:

71 is good for roughly 470WHP and will perform better at higher boosts(~21+ PSI).
76 is good for roughly 520WHP and will perform better at lower boosts.

This is about all you need to know, spool differences will be in the range of 200~400 RPM different if I had to guess given same style exhaust housings and A/Rs.

07-29-2009, 02:22 PM	#10
Monooxide Zilvia Addict Join Date: Mar 2005 Location: Farmington/Flint, MI Age: 37 Posts: 675 Trader Rating: (8) Feedback Score: 8 reviews	GT3071R vs. GT3076R: 71 is good for roughly 470WHP and will perform better at higher boosts(~21+ PSI). 76 is good for roughly 520WHP and will perform better at lower boosts. This is about all you need to know, spool differences will be in the range of 200~400 RPM different if I had to guess given same style exhaust housings and A/Rs.