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Finally some improve dyno result on sec dyno testing
As i predicted PP exhaust can offer more TQ and power every where
I think with proper header the power output will be much better
Not trying to be rude but that's it? From what I've seen 180WHP is easily attainable with the stock port configuration. Power drop off seems worse at high rpm's as well.
Last edited by s1ckksn0w; Mar 10, 2025 at 01:49 AM.
The absolute reading of a chassis dyno doesn't mean much in a vacuum. The same setup might read 185whp on a Dynojet and 170whp on a Mustang or other load-bearing dyno, especially one that takes into account vehicle weight and simulates aero load.
Assuming variables were controlled, using a chassis dyno to back up before/after test results and just read the difference is the right way to go.
The absolute reading of a chassis dyno doesn't mean much in a vacuum. The same setup might read 185whp on a Dynojet and 170whp on a Mustang or other load-bearing dyno, especially one that takes into account vehicle weight and simulates aero load.
Assuming variables were controlled, using a chassis dyno to back up before/after test results and just read the difference is the right way to go.
Also assuming that a clapped out stock engine isn't compared with a newly rebuilt engine with a free flow exhaust etc.
Exhaust timing hyperadvanced. Looks not too bad here:
But in actuality the GSL-SE housing is a completely different animal timing-wise.
This is why these hybrids suffer from torque loss. They can get some small gains at very high RPM, but the car is slower, as it has much less HP through the gear.
This is a better view:
Side port almost ready to open, and GSL-SE port almost fully open.
Another view with side port open:
Closing the port is more problematic. GSL-SE exhaust port still wide open while side port is closed.
As you can see rotor has a long way to go before the GSL-SE port is closed. This point is approximately TDC. The side port has just closed.
Last edited by kevink0000; Apr 4, 2025 at 10:10 AM.
