Because at 120hp/liter, about the highest specific output of any street engine ever,the engine is as efficient as it will ever be. Other than forced induction, or other expensive engine mods (bore, stroke increase) I just have a hard time believing that there is something out there that will unlock a bunch of extra hp.

Further, a free flowing exhaust or intake may have a deleterious effect on low rpm torque.

So spend you money if you must, but I think Honda has already done just about everything one can.

- El Tianti

 

You're probably right.

Most exhaust mods could generally increase ultimate BHP but reduce torque somewhere else, or even vice versa!

Typically, they move delivery round on a well designed engine, rather than actually improve things.

I will probably get flamed by a few tuning addicts for that one!

 

I won

 

Could you run through the list?

 

I should start by saying that I have no intention of modding any part of the drivetrain on my stook. Just a personal choice and I am very uncomfortable with screwing around with the warranty.

Having said that, I respectfully offer that some of your logic is erred.

Honda did produce an amazing engine. IMO it is a technological tour de force and 10 years from now I think we will all still be in awe of what the boys at Tochigi have blessed us with.

But... those same engineers had to live within certain parameters. Noise restrictions, pollution hurdles, et al limit any engineer in what he or she can do. Further, while this is a very focused car, Honda knew it had to please a reasonably wide variety of customers. All of these factors limit the amount which Honda was able to stretch the envelope.

Many vendors and members of this board have reported reasonable increases in power without forced induction. RM racing reports a real world increase in torque while an increase in peak horse power. Cdelena's testimony is another example. I can only assume that these things are true and IMO if someone is willing to give up one area of car (noise levels, pollutants, or gas mileage) they can certainly gain in others. For example, I don't doubt that Mugen can get an additional 15 hp out of our cars. I just wouldn't be willing to live with the increased noise and effect on my warranty.

Just my 2 cents.

 

[QUOTE]Originally posted by ElTianti
[B]Because at 120hp/liter, about the highest specific output of any street engine ever,the engine is as efficient as it will ever be.

 

I would have to diagree here. The manufacturers always have to make compromises in the name of "civility". Plus if you looked at Richard's dyno of the Spoon header, you would retract what you just said. Made power everywhere....

-Shing

 

Honda themselves have already proven you wrong. Question if you can't extract more HP from a 120hp per liter engine. Then why does the Japanese models come with 10 extra ponies?

 

Sure, nothing original here..

Mugen header, exhaust. Proflow TB, low restriction filter.

(FPR, thermostat, radiator cap, and iridium plugs, none of which make proven power but seemed logical in the package).
I may do the revised ECU in the future.

 

[QUOTE]Originally posted by cdelena
[B]Mugen header, exhaust. Proflow TB, low restriction filter.