How Much Power Does My Supercharged Honda S2000 Make?

Dyno Testing/Tuning A Supercharged Honda S2000 - Stage 1 SOS Kit

Before stomping the throttle in my newly supercharged S2000, it's important to make sure that the tune is working appropriately, and that the vehicle is getting the correct amount of air and fuel when needed. To do this, I headed to Throttle Works to put the S2000 on a dyno and measure air/fuel ratios, and to adjust as needed.

Ideally, the supercharged engine will maintain an AFR in the range of 11.5:1 to 12:1 when on boost. The car ran 4 full throttle runs to verify the kit maps were working appropriately, and to accurately measure horsepower and torque. How much power did it make? Were any adjustments needed? What tweaks could allow for more horsepower? Is it safe to drive hard? All of these questions answered in the video!

Throttle Works - Tuning Shop In Boise, ID

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[djtraxx]

Dude, you are such a smart guy and your videos are super interesting. What a truly great service you’re doing for the community! You just break it down so well and make things so easy to understand. You also pick the perfect topics.

[HumbleMechanic]

Get another BUNG!!! ;) I bet she is a blast to drive WOT!

[BrashAdventures]

As someone with an AP2 and having seriously looked at the SOS Stage 1 Supercharger kit, THANK YOU for taking the time to show how in depth the install is and how complete the kit is and what sort of realistic gains to expect.

[coolguy]

Mine with same kit, Mustang Dyno, 191 baseline, 306 after. I have an exhaust, though, and testing was at sea level at 95F. I would expect your torque to be climbing more than it is after 6000; check for belt slippage. I definitely recommend a wideband, as I bet you're running a bit rich (I bet right at 10:1). Welding the bung on was an easy thing, took an exhaust shop about 15 minutes. My kit ran super rich out of the box, probably to compensate for dirty injectors. I'm actually considering raising my boost level to 7PSI as I believe clean injectors have the capacity for it.

Your AFR spike in the mid-range is a common enough issue; SOS has an "alternate" tune for the FVM controller specifically for this issue. I've had this kit for 6 years, and it's very reliable and easy to maintain. It also passes emissions checks easily.

[JavierCR]

I like that you emphasize the power curve so much over the peak power numbers. People only look at the peak numbers and neglect the power curve as the advantage.

[derekbigpowers]

I walked out of my court hearing for this

[bbkangs]

If you put enough stickers on it, you can get it to 300 hp

[SalandFindles]

Damn, the humble mechanic really hooked you up proper!

[roskataqv]

This s the proper way of boosting an s2000, as it keep it's high revving nature, awesome result Jason.

[john_p]

its good that you acknowledge the difference between dynos. a lot of people think everything reads like a dynojet

[SloppyMechanics]

Awesome results, quick insight, sometimes 11.5 air fuel down low will make more torque, leaning it out to a 12.5 till more boost comes in would probably make more horsepower but less torque, you might be surprised a lot of motors will make the same power 11.5-12.5 air fuel, just food for thought

[numberpirate]

As I posted on your last video: You don't need another bung, all you need is a wideband that has a narrow band output. Take the narrow band output splice it into the positive for the O2 sensor, then put two 10 ohms 10 watt resistors inline for the heater circuit. Then you have one bung in your exhaust for the lambda O2 sensor and your ECU still gets the info it needs and you will not get a CEL. I used an old O2 sensor harness for this so it is reversible.

I used the Innovate kit, it has the wideband output 5v-1.1v, narrowband 1.1v-0.1v and a datalogger port. Doing what I am posting about makes it so you do not need to permanently modify your exhaust or wire harness.

[vgfuxbl]

Hello Everyone and Welcome
Its been like 3 years since i first watch your vids
Good job sir!

[dawsonjohannes]

I put my Civic on a Mustang dyno in Lake Placid, NY at Moon Performance and am totally sold on the use of a Mustang rather than a DynoJet. The guys at the shop were awesome and explained the difference between the two extremely well and why Mustang numbers are lower. Also, getting that thing to spit out a number above 100 horsepower was hard, but we saw 100.1 on my third run!

[chaztitan]

the fact engine dyno's make or record different hp outputs is amazing to me. its out put or its not.

[strlRnn]

Just got a 02 s2000 and ur videos have been helping me with building plans for her. Thank you:)

[Bost]

It's great how easy it has become to get more power with aftermarket kits. (With good ones) :D Nice

[XdevlGD]

All people see is number. This man right here is actually trying to learn every step and why everything happens. Unlike some people who just have a shop or they’re homie install it for them hoping it’s good

[jimothyus]

Jason I cant belive youre making us wait for the next video to hear that amazing supercharger noise. I thought you were nice...

[justinturner]

I’ve seen all your videos since you first reviewed your STI. It’s been really cool to learn more about cars and see the progress in your S2k. I’m really stoked for you.