A little more hp for R18 - Page 10
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Thread: A little more hp for R18

  1. #91
    Nooblets Ridingaround's Avatar
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    My bone stock R18 has zero problems accelerating and merging onto roads. Getting serious HP from an economy designed engine might be a waste of money....might be.....
    jasper60103 likes this.
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  3. #92
    Nooblets Ridingaround's Avatar
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    Quote Originally Posted by 2013SilverSI View Post
    I'd just pay off the EX and trade it in for an SI or other vehicle with 200+ hp with a manny tranny. The EX is a 140hp automatic transmission economy car. The SI is an economy car too. No amount of bolt ons are going to give you any meaningful increases in power. That's just my 2 cents...
    Finally, someone articulated the truth. Now, do people want to hear it.......no, it seems.
    Learn til you die.

  4. #93
    Truck? What truck?! scottyrocks's Avatar
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    Quote Originally Posted by Ridingaround View Post
    Finally, someone articulated the truth. Now, do people want to hear it.......no, it seems.
    Yeah, you kind of have to know, going into an R18 purchase, that that's pretty much what you're gonna get, power-wise.
    'Three pedals or bust!'
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  6. #94
    Truck? What truck?! scottyrocks's Avatar
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    Three current threads on getting more power from the R18 engine have been merged here. New threads on this topic will be merged here, as well.
    'Three pedals or bust!'
    'Come for the cars. Stay for the people.'
    'Part of having the right to free speech is knowing when to not exercise it.'
    ‘Say what you mean, mean what you say, but don’t say it mean.’
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  7. #95
    One Bad Mama Jama!!!
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    And it seems like the best way to increase power......would be to eventually get a Civic Hatchback [10th gen]. I think I'm understanding the issues.

  8. #96
    Platinum Member Silver2Coupe's Avatar
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    You can get more torque and mpg from premium. I have an HRV with awd now and after some experimenting I seen some big gains in mpg and performance. It has the R18 motor and after adding my ultragauge that monitors the ecu, I can say it adjusts and more torque and horsepower is at hand. I seen 150 hp on low econ cam at crossover. I also monitored the fuel trims and command air fuel. The ecu usually runs a command AF around 1.0 or lambda. When coming to a stop it goes to mbt 13.2 fuel air for 5 seconds then 14 7. Also at WOT it leans out to 12.5-12.7 AF from the stock command of 11 to 11.5 AF. I figure the HP is 25-30 off from the 140 HP Honda says. Fuel trims are close to zero.

    Also I have no issues keeping up with high end sport cars. On regular I could not pass or get out of my way which is very dangerous on the tollway where people go way faster then the speed limits. All Honda cars are econ and the word econ means efficient. How can tune for more efficiency than the ecu is all ready set up for and adjusts by based on octane of the fuel. If you want to spend 30K on a motor to make the HP you want then you are better off buying a car made for HP. BTW 93 octane will support a 7.5 compression motor at all load ranges and rpms to redline. Which means it's running MBT timing throughout the rpm range with out fuel enrichment or egr. Now remember these motors are 10.6 to 11to1 so the octane requirements are higher which means there is a loss of efficiency and torque. Systems that allow lower octane are egr,low tension rings and oil being sprayed on the underside of the pistons.
    Civic POP Crew #3

  9. #97
    Platinum Member fear24's Avatar
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    for you newbies here....even if you don't understand what Silver said above...just believe it. he's been our mpg guru around here for years. he uses that little gauge of his and gives us all kinds of useles, uh, useful information on what our engines are capable of doing - the R18 motors.

    so, if he says to use premium fuel to get better performance, use premium fuel.

    btw, nice to see you Silver. just a few of the POP crew are left, and Teeps.
    Ridingaround likes this.
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  10. #98
    Truck? What truck?! scottyrocks's Avatar
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    Quote Originally Posted by fear24 View Post
    for you newbies here....even if you don't understand what Silver said above...just believe it. he's been our mpg guru around here for years. he uses that little gauge of his and gives us all kinds of useles, uh, useful information on what our engines are capable of doing - the R18 motors.

    so, if he says to use premium fuel to get better performance, use premium fuel. .
    Yes, that's whom I was referring to in post #79.
    'Three pedals or bust!'
    'Come for the cars. Stay for the people.'
    'Part of having the right to free speech is knowing when to not exercise it.'
    ‘Say what you mean, mean what you say, but don’t say it mean.’
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  11. #99
    One Bad Mama Jama!!!
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    Seems like a simple thing to do [using Premium]. I can give it a try. So, should the R18 engine be using Premium anyway, or it the "use 87 octane" thing the "best" for long term engine use?

  12. #100
    One Bad Mama Jama!!! ampm1678's Avatar
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    Quote Originally Posted by MaybeCivic View Post
    Seems like a simple thing to do [using Premium]. I can give it a try. So, should the R18 engine be using Premium anyway, or it the "use 87 octane" thing the "best" for long term engine use?
    Pretty sure the only benefit of using 87 is saving a couple bucks per fill up...using 91 shouldn't hurt the longevity of the engine (unless you use premium gas and happen to also drive like a jerk lol)...but tbh when I first switched to premium gas I was spending maybe an extra $3-$4/fill up but was getting better mpg from each tank so didn't have to fill up as often so the extra cost balances out....the smoother revs and acceleration were just a bonus for me
    MaybeCivic likes this.
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