2 1JZ's on the dyno 1 single 1 twins

[Notsafe1jz]

Agreed. we had no idea of the power it was lying down and i personally didn't even know it was possible for the twins to lay down power like that. His next mod will be 440's

The dyno did seem to read on the low side for most cars.

one example a 2013 370Z nismo put down 290whp had 4,000miles

Actually that's pretty close for a Nismo Z, rated at 350 crank assume 13-15 percent drivetrain loss(more for auto of course) and you're right about there. My old G35 Sedan(06 Rev Up model, 6 speed) made 274 wheel with full bolt ons; it trapped 105. Nismo 370z will trap 106-108, again assuming 10 hp per every MPH at the same weight. I've seen some 370Z Nismos make 295 - 300 wheel but that's all within 5%.

That pretty much makes that 380 wheel stock turbo'd 1JZ for real(actually makes that power and dyno isn't off). Good stuff.

 

[Turbo Habanero]

Someone on SF made a good point

I dont want to burst your buddy's bubble but that 1.14 CF is putting in work Roughly 330 uncorrected, still good numbers for being hot and high up (27 hg in.), probably only 350 at sea level though.

 

[Turbo Habanero]

more post from SF

Habanero's cf isn't terrible. It does show a temp of 102*. The sae correction should be 77* and 0% humidity. On my sae dyno below, it "hurt" my readout because it was like 60* in jan when we dynoed. Maybe cooler...

Here's my dyno from my first swap in 2004, tuned on a button-safc. I also pulled about 17/23% after 4000rpm. The baseline dyno was dead rich at 10:1. Only mods were the hks intake and a 3" dp. No boost controller or anything else.

I think that ecu and boost did the most benefit. I was on stock timing and I saw it retarding timing occasionally during the pulls.

 

[Turbo Habanero]

Its just a correction factor to negate atmospheric conditions in determining the HP. With your dyno the Correction Factor is 1.14, so it inflated your numbers 14% over actual uncorrected numbers to simulate perfect conditions. Actual HP is 334 hp (380.9/1.14) which is a great uncorrected number given the altitude, and temp. A sea level dyno would probably yield 350 vs the 380 though. Still very good numbers for a stock twin 1j!

To give a comparison my buddys car 18psi on the twins, 550s, afc, stock ecu only put down 330whp at sea level. It ran a 13.2 @ 107 mph iirc in the 1/4 mile.

 

[87supraguy]

i've been looking up and researching the CF on dyno's and turbocharged cars. from what i've read in a few places the CF would be less since some factor don't have a great impact on a turbocharged motor as it would on an N/A motor.