No, I checked the whole IMRC setup. Besides, it runs great once the IMRC is activated and the power goes up. Below the point that it opens is the issue. With the IMRC pinned open now the stuttering is completely gone.
As far as gaining power down low with them tied open, I notice no increase. I will have to put those headers on to see if there is an improvement though. If turbulence is indeed the issue, then I wont be able to tell any benefits until it is gone.
If the headers eliminate the stuttering, then I will do new dyno tests that with everything equal except the secondaries either pinned open or closed. I suspect there will be no increase in torque with them pinned open, except around the opening point. I will let the dyno determine that.
BlackPantherSVT: Please try to tie open your secondaries. Yesterday is the first time I ever tied them open. And yes, with them tied open the stuttering is essentially gone!
That may be a hint to remove them for someone with a stock system, but not for me. I won't remove them until the dyno tests show an improvement, and that will have to wait until I have made the vehicle operate well with everything hooked up properly. Anyway, please take some wire and tie the spring-loaded lever to the open position and then test drive it. NO need to reset anything. I pulled my intake boot from the throttle body to gain easier visual and physical access, as well as the pcv valve. It took 5 minutes to use a piece of wire to tie them open.
Please let me know ASAP if this test (with everything else stock) works for you.
warmonger
