Hemi 392 Intake Manifold Ported by Peak Speed Shop + 90mm Throttle Body

Dyno-tune results provided by customer - Jefferson City, MO


2012 Dodge Challenger 6.4L 392 Yellow Jacket.  A tune was done prior to the "before" results to factor out the effects of just tuning the stock setup.  Dyno was before/after test on ported intake and 90mm throttle body only.  

18 Gain in Peak RWHP
26 Gain in Peak RWTQ

Good gains were seen throughout the power curve.

Hemi 392 Dyno Results Porting

Hemi 392 Intake Manifold
Ported by Peak Speed Shop + 90mm Throttle Body

Dyno-tune results provided by customer - Prosper, TX


2012 Dodge Challenger 6.4L 392 M6. 

"Here is the dyno showing when I arrived and ran the first time VS after I was tuned for the 90mm and your ported intake. It's a mustang dyno so actual numbers are way low. I plan to go dyno on my usual dyno in a week. Only issue is last time I ran on that one I had 275/40R20 tires on lighter 20x9 wheels. Now I'm heavier so gave up some whp as I have 315/35R20 tires on stock wheels widened to 10". So I lost some and then gained that back plus some. Which is where I got the +23 whp and +28 ft lbs I posted on CT. Figure in the loss, then the gain...that's what I would put down with the old wheels n tire setup.

Dodge Challenger 392 dyno

Hemi 392 Intake Manifold 2013 Dodge Challenger
Ported by Peak Speed Shop + 88mm Throttle Body

Dyno-tune results provided by customer - California

The "before" run is with LMI CAI, Modern Muscle 87mm ported throttle body, Borland long tube headers, no cats and cat back exhaust.  The "after" run was switching to the Peak Speed Shop ported intake manifold port matched to the Arrington 88mm throttle body.

A tune was done prior to the "before" results to factor out the effects of just tuning the stock setup.  Dyno was before/after test on ported intake and 88mm throttle body only.  This is without a retune after the swap.   After the swap, Air Fuel Ratio went from 12.6 to 13.1.  Customer should see even greater gains after the retune and adjusting the AFR back down to around 12.6.

18 Gain in Peak RWHP (at line, not spike)
28 Gain in Peak RWTQ

Good gains were seen throughout the power curve, but expecially in the 3,000 to 4,500 rpm range.

Hemi 392 before porting

392 Hemi after porting