By popular demand, here are the results of a camshaft test that was performed here two weeks ago, provided by Seek Speed Shop, a sponsor on here.
The camshaft test was conducted on an RSX with the following setup:
'06 TSX longblock
Stock bottom end
SuperTech springs/retainers
RBC intake manifold
Short ram intake
SSR header
2.5" exhaust
ID1000's
K-Pro
This graph is on the stock camshafts w/25 degree VTC gear on it.
![Image]()
Now, onto the Prayoonto cams.
Here is the same engine with a set of Prayoonto Signature Series Stage 2 camshafts compared to the OEM bumpsticks. A 50-degree VTC gear was also installed for this test. (Solid line is Prayoonto cams, dotted line is OEM.)
![Image]()
My first impressions regarding these cams were "Wow." Never have I had an aftermarket camshaft/valvetrain combo NOT freak out the knock sensor at light load... Until these. Not once did I have a hint of phantom knock blip up on the sensor while tuning these camshafts. Also, the idle quality is superb. They idle at a target 900 RPM idle without any tricks, and sound smooth as glass. Cam angle table had a max advance of 45 degrees trickling down to 30 to make the most power. As you can see from the graph, midrange torque was greatly improved over the OEM cams (some of which can be attributed to the higher-than-stock cam advance in the middle).
Next tested was a set of the Prayoonto Signature Series Stage 4 camshafts. A 25-degree VTC gear was utilized for this test. (Solid line is Prayoonto cams, dotted line is OEM.)
![Image]()
Once more, these were a dream to tune. Idle required no tricks, knock sensor was happy, and everything made sense with these camshafts. As evident by the graph, these cams are a tad too large for an engine like this (relatively low compression, limited flow, etc...), but regardless, they resulted in decent power. Midrange torque is down a tad compared to the smaller Stage 2's, but I am confident that if we had another ten degrees of VTC travel, some of the lost torque would be found. This grind also carried power a bit further than the Stage 2's. I would like to test a set of these on an engine with a healthy dose of compression, a ported head, and a 3" exhaust in order to realize the full potential of these camshafts.
This final graph is a comparison of the Signature Series Stage 2's (solid) vs. the Signature Series Stage 4's (dotted).
![Image]()
I would once more like to thank Eric/Blake/Colin @ SeekSpeedShop for bringing their testing to my facility, Norris @ Prayoonto Racing for developing these wonderful camshafts that are a tuner's dream to work with, and finally the fine patrons of K20a.org for wanting to keep going faster.
If anyone has any questions, feel free to ask.
Thanks!
- Derek
The camshaft test was conducted on an RSX with the following setup:
'06 TSX longblock
Stock bottom end
SuperTech springs/retainers
RBC intake manifold
Short ram intake
SSR header
2.5" exhaust
ID1000's
K-Pro
This graph is on the stock camshafts w/25 degree VTC gear on it.
Now, onto the Prayoonto cams.
Here is the same engine with a set of Prayoonto Signature Series Stage 2 camshafts compared to the OEM bumpsticks. A 50-degree VTC gear was also installed for this test. (Solid line is Prayoonto cams, dotted line is OEM.)
My first impressions regarding these cams were "Wow." Never have I had an aftermarket camshaft/valvetrain combo NOT freak out the knock sensor at light load... Until these. Not once did I have a hint of phantom knock blip up on the sensor while tuning these camshafts. Also, the idle quality is superb. They idle at a target 900 RPM idle without any tricks, and sound smooth as glass. Cam angle table had a max advance of 45 degrees trickling down to 30 to make the most power. As you can see from the graph, midrange torque was greatly improved over the OEM cams (some of which can be attributed to the higher-than-stock cam advance in the middle).
Next tested was a set of the Prayoonto Signature Series Stage 4 camshafts. A 25-degree VTC gear was utilized for this test. (Solid line is Prayoonto cams, dotted line is OEM.)
Once more, these were a dream to tune. Idle required no tricks, knock sensor was happy, and everything made sense with these camshafts. As evident by the graph, these cams are a tad too large for an engine like this (relatively low compression, limited flow, etc...), but regardless, they resulted in decent power. Midrange torque is down a tad compared to the smaller Stage 2's, but I am confident that if we had another ten degrees of VTC travel, some of the lost torque would be found. This grind also carried power a bit further than the Stage 2's. I would like to test a set of these on an engine with a healthy dose of compression, a ported head, and a 3" exhaust in order to realize the full potential of these camshafts.
This final graph is a comparison of the Signature Series Stage 2's (solid) vs. the Signature Series Stage 4's (dotted).
I would once more like to thank Eric/Blake/Colin @ SeekSpeedShop for bringing their testing to my facility, Norris @ Prayoonto Racing for developing these wonderful camshafts that are a tuner's dream to work with, and finally the fine patrons of K20a.org for wanting to keep going faster.
If anyone has any questions, feel free to ask.
Thanks!
- Derek
