Hondata's N/A 720whp RSX
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Here's the 3 configurations of the car from the article.
NA (I'm guessing they just remove the bottles?)
![](http://image.importtuner.com/f/29115534+w750+st0/impp_0909_17_z+720_whp_acura_rsx+engine_view.jpg)
G/GCC- and G/FCC-class regulations forbid forced induction, and Doug knew that the easiest way for the hungry K20A to breathe on its own would be through a set of individual throttle bodies. "Kinsler and I tested dozens of combinations of varying width, length and shape runners and inlet set-ups before deciding on what you see here, and a lot of the data went into the revision and development of off-the-shelf kits." To make the most of them, Doug's RSX spins IPS S2 cams for naturally aspirated duty, and fuel is provided via four 1,200cc RC injectors, managed with a Hondata K-Pro to produce 284.9 whp and 182.2 lb-ft of torque.
Nitrous
![](http://image.importtuner.com/f/29115471+w750+st0/impp_0909_18_z+720_whp_acura_rsx+plugs_shot.jpg)
In the "fuel" classes, where the use of an oxidizer is permitted, Doug uses a custom Edelbrock direct-port dry system that delivers two 70hp shots that produce a total of 415.7 whp and 274.4 lb-ft of torque. "We found that we could effectively increase power by a factor of about 50 percent before reliability becomes a concern," he explains.
Nitrous + Superchargers
![](http://image.importtuner.com/f/29115540+w750+st0/impp_0909_20_z+720_whp_acura_rsx+intercooler_shot.jpg)
Not much changes with the engine for blown-class prep. Two Kraftwerks Rotrex superchargers--a C30 and a C38--are fitted to the engine, and plumbed into a liquid-to-air intercooler. Injectors are swapped out for 1,600cc RCs, the IPS cams are yanked in favor of a stock '06 TSX intake cam and an '04 RSX-S exhaust cam, and the engine is re-tuned to make 684.7 whp and 390 lb-ft of torque. "The linear power production and instant throttle response of supercharging is very advantageous to top speed racing," explains Doug, "And we found that two smaller chargers offer the ability to spin faster than one large one,"--an important point to mind when your engine spends about a minute and a half of each run producing between 600 and 680 whp at a constant 8,500 and 9,500 rpm. Adding a small shot of nitrous to this set-up produced just over 765 whp once, "But that was just for fun," Doug advises.
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This is the first pic I'm talking about. I understand it has alternate setups with the superchargers, etc., but the first pic in this thread is definitely N/A, no intercooler or superchargers.. I saw the other pic in the article though.
Oh, I see what's going on here. You're saying it's not N/A because of the nitrous. I still consider it N/A with the nitrous setup.. Or maybe I'm just really confused. I only see two engine configurations, and either you use nitrous or you don't..
Last edited by Fabrik8; 09-02-2009 at 07:49 AM.
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Now true it may or may not be actually connected to a source.
My only real beef with the article was making a big deal about how the car didn't have a turbo. Okay... but to get the really impressive numbers it needed nitrous and superchargers, as a NA only motor while being quite nice it is nothing amazing.
Correct. I think (especially in Honda land) NA = all motor = no power adders.
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It's very clear cut in my mind. Switch turned off, N/A. Switch turned on, not N/A.
If I want to add nitrous to an N/A engine, I will. I don't care if people faint and scream about N/A purity and all that bullshit. The only people who really care about that stuff are the people who care more about being trendy than they do about performance. But maybe I'm just opinionated..
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Last edited by Fabrik8; 09-02-2009 at 08:03 AM.
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I spot with my little eye ... direct port nitrous injection ![Wavey](images/smilies/wavey.gif)
Now true it may or may not be actually connected to a source.
My only real beef with the article was making a big deal about how the car didn't have a turbo. Okay... but to get the really impressive numbers it needed nitrous and superchargers, as a NA only motor while being quite nice it is nothing amazing.
Correct. I think (especially in Honda land) NA = all motor = no power adders.
![Wavey](images/smilies/wavey.gif)
Now true it may or may not be actually connected to a source.
My only real beef with the article was making a big deal about how the car didn't have a turbo. Okay... but to get the really impressive numbers it needed nitrous and superchargers, as a NA only motor while being quite nice it is nothing amazing.
Correct. I think (especially in Honda land) NA = all motor = no power adders.
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http://image.importtuner.com/f/29115...ooler_shot.jpg
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My only point being in that state it made ~285 whp, a far cry from the 700+ the thread/article implies. An almost 300 hp NA car (while is a nice achievement on its own) is far less interesting than a 700+ hp NA car.
While perhaps technically correct (or maybe its just semantics?), nitrous is almost always in a different class (usually the same as turbo/superchargers) compared to cars without.
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no N/A is N/A.. Naturally aspirated. nitrous is still considered N/A in the honda world or any other.. now All-Motor on the other hand.. thats a diff story but you can't tell me that this pic is an N/A set-up.. unless you're blind and don't see that supercharger and two air filters instead of one.. ![Dunno](images/smilies/dunno.gif)
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