ECU Question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

kpjo4 · 01-25-2014, 02:27 AM

So my last rom tune was tuned for a sr20det t25/t28 setup, 550cc, z32, factory compression. Since a 2871.64 is not that much bigger will the tune still be efficient and safe?
From what I understand the the ecu is a load base type, hence you can run 16psi on a sr t28, so I was wondering if a 2871.64 would run the same around the same boost pressure. I'm thinking of also retarding the timing by 5 degrees.

*fliprayzin240sx* · 01-25-2014, 03:38 AM

No, yould need a retune. Same boost but different volume of air being pushed since you're going to be running a bigger turbo. 16 psi on T28 will yield roughly 260-280 hp, 16 psi on a GT2871R will get over 350 hp.

01-25-2014, 02:27 AM	#1
kpjo4 Leaky Injector Join Date: Aug 2013 Location: TX Age: 34 Posts: 50 Trader Rating: (0) Feedback Score: 0 reviews	ECU Question So my last rom tune was tuned for a sr20det t25/t28 setup, 550cc, z32, factory compression. Since a 2871.64 is not that much bigger will the tune still be efficient and safe? From what I understand the the ecu is a load base type, hence you can run 16psi on a sr t28, so I was wondering if a 2871.64 would run the same around the same boost pressure. I'm thinking of also retarding the timing by 5 degrees.

01-25-2014, 03:38 AM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	No, yould need a retune. Same boost but different volume of air being pushed since you're going to be running a bigger turbo. 16 psi on T28 will yield roughly 260-280 hp, 16 psi on a GT2871R will get over 350 hp. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!