Quote:
Originally Posted by Nabush
You sure can manipulate numbers on a Mustang dyno...
From what I saw, Mustang dynos are very repeatable, several pulls with same tune were showing exactly same numbers...
When I was talking 530WHP at 6000 rpm this was with cam and heads on an A8, without MSD and TB. No way. 490-500whp max.
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The as measured HP from a dynojet is as accurate as anything know to man. It takes HP to spin up a heavy roller PERIOD. As measured on a dynojet is as accurate as you can get and it is comparable to anywhere, anytime, to another as measured on a dynojet.
Am I saying the same car with the same mods will make the same true as measured HP? Nope, the car will put out different HP depending on conditions (and location of dyno). The is an
highly abused SAE correction factor for that, which should be used under very limited adjustments (read that as a few %) and never on a FI engine. So why don't we all use as measured? Which is 99.9% accurate completely repeatable?
The Mustang dyno is a programmable load dyno and can literally spit out ANY number. It is VERY useful in tuning a street car on street gas especially FI cars as these cars tend to ping / detonate underload.
You get into real trouble when you want to race a dynoject against a Mustang dyno. As a dynojet is a true fixed load no way to cheat as measured, and a Mustang dyno is NOT.
It is near laughable when we get to Unicorn HP on FI using STD, STP et al.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.