OVTune Handheld Dyno #s

2008 Tacoma PreRunner TRD OR 2WD
4.0L 1GR-FE V6 (AT)
80k on odometer (blower installed at 60k)
3.73 rear end

DeLeon Dyno Performance (Dynapack Dyno)
Santa Clara CA 95051 (Elevation: 72ft)
67°F 44% Humidity

TRD Supercharger
URD 2.85" stealth pulley
TRD Gen1 CAI with Volant scoop
76mm throttle body
URD/Walbro fuel pump upgrade
NST waterpump/Alt/crank pullies
Doug Thorley short tube headers
URD Y-pipe

Stock: Max Power: 326.4 Max Torque: 371.8

OVT 91Oct Max Power: 335.8 Max Torque: 371.7
OVT 93Oct Max Power: 341.3 Max Torque: 379.5


1. Truck had 91Octane pump gas cut with 100Octane. I aimed for a 50/50 mixture hoping to ultimately have fuel in the 94-95Octane range. Octane93 is not readily available at California pumps.

2. Had three pulls on the Dynapack. Baseline, 91 Octane file, and 93 Octane file

3. Dyno pulls were done in 4th gear. When attempting to dyno in 3rd, the tachometer was inaccurate which would affect the plotting of the results.

4. Dynapack dynos are performed with the drive wheels removed from the vehicle. Thus, it doesn't matter what size tire I have, nor the weight of my wheel/tire combo.


Stock = RED line
Octane91 = Green Line
Octane93 = BLUE line

 

Baseline (yellow boxes/ RED line on chart)

326.4HP / 371.8TQ

 

OVTune Octane91 program (yellow box/GREEN line)
335.8 HP / 371.7 TQ

OVTune Octane93 program (green box/BLUE line
341.3 HP / 379.5 TQ

 

AFR chart. Reading was taken with a sniffer probe at the rear tailpipe.

Stock = RED
OVT Octane91 = GREEN
OVT Octane93 = BLUE

 

Conclusion:
1. stock TRD supercharger software didn't look like it was pig-rich
2. Both OVT oct91 and oct93 tunes starts to lean out on the top end.
3. If keeping the same setup, I should do the boost reference fpr mod.
4. Need OVT to remove the speed limiter

 

Strong results. Thank you for sharing, and especially the graphs!

 

Awesome!

 

Stock cats on the shorties?

 

Yes, stock cats on the shorties. No secondary cats.

 

Ya I’d like to see the graph go to 5500rpm and see where it goes then. My truck goes more rich the higher the rpm I go.

 

Very similar mods and power as @Murphinator's OVTune dyno but big difference in max torque. I think he posted 329 max TQ.

Edit: I see you're regeared

 

I'm hoping I wasn't misinformed, but i thought the stock gears were 3.73 so that's what i told the dyno operator. But no, I'm not regeared.

 

yes 3.73's are stock for all 2nd gen v6's

also why were dyno runs only done to like 4800 rpms, should of ran that bitch to fuel cut, peak torque and hp on a stock motor occurs at 4000rpm (tq) and 5200rpm (hp)

 

sub'd

 

Sub’d.

 

Interesting.

 

You're correct...my mistake. Still curious as to the near 50 lbft TQ difference with nearly identical max HP

 

Yes, also keep in mind the dyno I went to was at about 800 ft and by the time the ovtune was flashed it was a little warm out. Atleast 80 F, probably more.

Good numbers! My pulls were done in 3rd gear sadly.

 

Dyno operator said he believe it was hitting a speed limiter. I do not have the governor removed although it is doable (confirmed with Mat).

 

Come to 100 degF TX. Won’t be near as peppy.