Not sure what's been done to the heads but the engine does have the usual mods, including headers, minimum muffled exhaust, cams, Haltech ECU, independent throttle bodies. The ATW dyno sheet says 379 hp @ 6,700 rpm and 275 ft/lbs @ up to 6,000 rpm with a nice flat curve, Only have the paper print out.

Do these power figures sound about right?

 

Really de[ends on what kind of dyno was being run. What kind of pistons are you running? What's the compression ratio and what type of fuel is being used?

 

Fuel is our premium 98 which i think is 96 US, it's the highest octane pump fuel available anyway. Dyno Dynamics dyno, rest I don't know but appropriate for a built engine.

 

I feel like that's crank HP? Reason why is at 379hp the peak of 6700 is LOW for a NA VQ. A cammed and supercharged car will make max power there. You have a dyno graph?

 

98 is about 93 US. Dyno Dynamics will read higher than a Dynojet with forced induction and lower on an NA car. DD dyno's also have a feature that calculates crank HP. So it's possible that's a crank HP number.

 

To confirm this engine is supercharged?

do you know how much boost youre pushing?

379hp seems around 6 to 8psi of boost but your torque is wayyyyyyy low for that HP mark...

either ignition timing is dialed down or your VTC isnt working (which is common for Haltech).

 

With ITB's, it's probably NA.

 

What are the cam specs?

 

Most likely NA, 379hp if whp is higher than the last DE results Sasha had and his peak power was very close to whatever redline he had back then. That's why I think its crank power, correct me if I'm wrong but I don't know of any engine this size that makes that kind of power at such a low rpm without FI. Unless he has a 4+ liter stroker in there?

 

Took a pic of the dyno sheet, engine is na.

VQ35DE

 

Ok sheet looks like something I'd expect, either the written RPM is wrong or they are lying. Also 445 crank is super optimistic, normally hp and tq cross over around 5k is not slightly passed 3k. That peak power HAS to be significantly closer to 8k RPM.
for context the VQ37 in the Z34N makes it's peak 350chp at 7400 RPM.

 

HP and torque are mathematically required to cross at 5252rpm. This chart is either fabricated or something is wrong with the dyno.

 

The chart is fine. The horsepower and torque readings are on different scales.

 

As long as the tune is solid, do the numbers really matter? Any chance you’ve been able to make it to a drag strip?

That said, I am curious why your curve is nosing over before 7k when you are running ITBs.

 

LOL... I see that now. Who's the dummy operator that did that? Only time I do that is when you can't physically get them both on the same page, like a diesel with 400HP and 1200Tq.

 

Kinda why I was saying his peak power RPM makes no sense, I did notice the scaling too, the crossover is around 165 kph in that graph.