New exhaust 2 1/4"
#91
Re: New exhaust 2 1/4"
Originally Posted by CGameProgrammer
Can you explain it as if to a moron, Duc? Like, after buying the muffler you linked to, is there anything else I need to buy for it? What shops are good for installing it? How long does it take? Is there anything more involved than just saying "Here's the muffler I want, now install it please"?
The pack is made by Hedman, it can be ordered/or is stocked at some auto parts stores/muffler shops, I went the "at my leisure" route and ordered it on-line from Summit Racing ($40 to the door).
HED-25005
http://store.summitracing.com/defau...t=egnsearch.asp
In order to install it you will either have to be able to make/bend an exhaust or go to a muffler shop and pay them. Should cost less than $100 total (inc pack) but local shops charge what they want so it could be more. My total was $90 (inc pack) because I know/do a lot of business with this shop.
Any shop "should" be able to take off your stock system and make the new one follow the same route in a couple hours. If for some reason you go to one that cannot then consider another because it is not a difficult job by any means.
Clif
What you do is cut your stock pipe off the cat mount point and weld your new one to the old piecs, another route is to preserve the stocak assy and make a new cat mount.
Clif
#92
Re: New exhaust 2 1/4"
Originally Posted by NASAgineer
Any idea why Honda doesn't just use 2.25" exhausts since it gets better mileage? Is it louder or does it affect emissions in any way? There must be a reason?
Clif
#93
Re: New exhaust 2 1/4"
Originally Posted by AZCivic
I would be doubtful that the exhaust would add more than 1-2hp and 0.25 - 0.5 mpg, to be honest. I've been around modified Hondas a long time (since 1998 or so) and the lowest horsepower models usually gained nothing or next to nothing on a dynojet with no realistic hope of better FE either. It's too bad the amount of assist is variable based on SOC, otherwise it would be possible to dyno test the HCH before and after.
On a seperate (but the same) note I just returned from a freeway 170 mile RT at speed not below 60 and not above 80 (drove 75 most of the time) and got 55.2mpg. With pax and by no means flat terrain, not to bad IMO.
I want to run side by side with another in my area to confirm the gains but I know it has more power.
Clif
Last edited by Duc; 12-14-2005 at 08:30 AM.
#94
Re: New exhaust 2 1/4"
As for the exhaust, why not go to a 2 1/2"? This is pretty standard amongst naturally aspirated four cylinder engines in the tuning world. For the intake, the larger the surface area of your filter, the more air you will suck, and the more power you will gain. (However, there comes a point when you can run too lean--don't know if the HCH runs lean or rich by default--and this can harm the engine, so be wary.) There is a flat-style K&N we use as a DIY intake (known as the Hot Air Intake mod) on the Cooper S. The filter is fairly cheap and really big, but it is shaped nicely so that it fits in narrow areas (K&N RU 1520). Repeated dyno tests have shown that this intake outperforms so-called fancy performance intakes...it cost 1/6 the price and is available at your local Pep Boys. However, I don't have a HCH or access to one, so I don't know if it will fit. Moreover, if you can route the intake to a cooler area in the engine bay, and/or find a direct or semi-direct avenue for outside air to hit it, and/or shield it from engine heat without blcoking air flow, you will increase your power that much more.
FYI - I have some questions/ideas about increasing power in the HCH, not limited to breathing, and I don't want to hijack this thread, so I am going to start a separate thread on that subject (just in case anyone wants to chime in with thoughts or advice).
FYI - I have some questions/ideas about increasing power in the HCH, not limited to breathing, and I don't want to hijack this thread, so I am going to start a separate thread on that subject (just in case anyone wants to chime in with thoughts or advice).
Last edited by BelowRadar; 12-13-2005 at 11:24 PM.
#95
Re: New exhaust 2 1/4"
Originally Posted by BelowRadar
As for the exhaust, why not go to a 2 1/2"? This is pretty standard amongst naturally aspirated four cylinder engines in the tuning world. For the intake, the larger the surface area of your filter, the more air you will suck, and the more power you will gain. (However, there comes a point when you can run too lean--don't know if the HCH runs lean or rich by default--and this can harm the engine, so be wary.) There is a flat-style K&N we use as a DIY intake (known as the Hot Air Intake mod) on the Cooper S. The filter is fairly cheap and really big, but it is shaped nicely so that it fits in narrow areas (K&N RU 1520). Repeated dyno tests have shown that this intake outperforms so-called fancy performance intakes...it cost 1/6 the price and is available at your local Pep Boys. However, I don't have a HCH or access to one, so I don't know if it will fit. Moreover, if you can route the intake to a cooler area in the engine bay, and/or find a direct or semi-direct avenue for outside air to hit it, and/or shield it from engine heat without blcoking air flow, you will increase your power that much more.
FYI - I have some questions/ideas about increasing power in the HCH, not limited to breathing, and I don't want to hijack this thread, so I am going to start a separate thread on that subject (just in case anyone wants to chime in with thoughts or advice).
FYI - I have some questions/ideas about increasing power in the HCH, not limited to breathing, and I don't want to hijack this thread, so I am going to start a separate thread on that subject (just in case anyone wants to chime in with thoughts or advice).
Clif
#96
Re: New exhaust 2 1/4"
Me too... which reminds me... i was checking up on drivign techniques for the '06 and saw a suggestion that said to pump the car into the desire speed, and then let go off the gas just enough so that it won't go to charge but not enough for it to drop below the 100's on the IG. Isn't this the same as just putting it in neutral while coasting or is there some kind of benefit of letting a trickle of gas go through when really it's not pushing the engine but simply keeping the car from doing regen braking?
#97
Re: New exhaust 2 1/4"
Originally Posted by malditos
Me too... which reminds me... i was checking up on drivign techniques for the '06 and saw a suggestion that said to pump the car into the desire speed, and then let go off the gas just enough so that it won't go to charge but not enough for it to drop below the 100's on the IG. Isn't this the same as just putting it in neutral while coasting or is there some kind of benefit of letting a trickle of gas go through when really it's not pushing the engine but simply keeping the car from doing regen braking?
Last edited by NASAgineer; 12-17-2005 at 12:20 AM.
#99
Re: New exhaust 2 1/4"
Originally Posted by malditos
so it's better to coast on neutral then?
Last edited by NASAgineer; 12-17-2005 at 09:57 AM.
#100
Re: New exhaust 2 1/4"
Originally Posted by malditos
so it's better to coast on neutral then?