toyota3The Toyota V6 Intake Manifold Spacer Dyno results are in! Positive results! Do not misinterpret the Peak HP/Torque on the chart, these spacers are not designed for peak power up high. You need to look at the results in the 1500-4000 ranges. …The Dyno was a Mustang Dynamometer
Two Toyota Tacoma trucks were run:
1. 2005 Manual Shift Tacoma,
2. 2011 Automatic Tacoma.
Both trucks were run with a spacer, and without a spacer. Both showed gains. This IMS is not intended for gains up high in the rpms ranges or high speeds, though gains are achieved throughout the entire power band. The spacer is designed for the low/midrange where there is a more useable power range for the real world driver. Adding the spacer changes the geometry of the intake runners. Longer runners = low/mid range power, shorter runners would be for top end speed.
2005 Manual Shift Tacoma 4×4:
HP Gains @ approx. 2320 rpm = 4-5  HP gain! 
Torque Gains @ approx. 2320 rpm = 9 Torque ft. lbs. gain!
Peak HP @ 4750 rpm = 192 hp.
Peak Torque @ 3600-3700rpm = 240 ft. lbs.
*HP gains from 1650rpm -2550 rpm and again 2650-3800 rpm!
*Torque gains all the way from 1650 rpm-2563 rpm, and again @ 2570 rpm – 3800 rpm!
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2011 Automatic Tacoma 4×4
Huge IMS HP/Torque gains
@ approx. 3125 rpm 12 HP gain!
@ approx. 3125 rpm 20+ Torque ft. lbs. gain!
Peak HP @ 4800 rpm = 178 hp.
Peak Torque @ 4100 rpm @ 208 ft. lbs.
*Torque gains all the way from 2750-4150+ rpm!
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Tacoma pic 1

The peak HP and torque up high in the rpm may seem to be a minimal gain, however should not be confused with the max power gain the spacer made at any given point on the graph. Peak power is the highest HP/Torque the vehicle made anywhere in the pull; ranging from the start rpm through to top end, but is not the max difference between the 2 different runs of with and without the spacer at any given point. There are spreads of much larger gains in the lower rpms.