Thread: Headers
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Old 12-06-2018, 10:13 AM   #51
oldman


 
Drives: SS 6 speed of course
Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,346
Quote:
Originally Posted by Umbriel View Post
Odd I have 2 inch headers and have none of those issues, I even have the stock plug wires still on there *gasp*

Sounds like the ported MSD is the majority of the problem with your issues honestly.
Do you have a M6? Cause with the cats... all works fine and dandy. The autos have a AFM valve for low speed backpressure and / or the auto are not as sensitive to low speed flow.
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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.
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