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Honda Accord Modifications

336 messages,  Last post on Apr 11, 2011 at 12:08 PM

You are in the Speed Shop Tuning and Modification Forum.

What is this discussion about? Honda Accord, Performance Mods

Messages Page 30 of 35

#284 of 336 Re: Acura TSX A-spec suspenson compatiblity with Accord EX [oldmansi] by lilengineerboy

Oct 14, 2007 (8:48 pm)

Replying to: oldmansi (Oct 14, 2007 10:59 am)
I think the way to go is Koni Yellows and Eibach whatever they call the smallest drop kit. Tokico has their "blue" like that might also do the trick, but those are strickly 40k mile dampers, while the Konis have maintenance but should last a lifetime.
I still think I am just leaving it stock for a year and then getting something more fun.

#285 of 336 Re: Inexpensive power gains? [lilengineerboy] by paisan

Oct 14, 2007 (9:33 pm)

Replying to: lilengineerboy (Sep 11, 2007 7:15 am)
CAIs are very easy to hydrolock in any kind of rain situation.
  
Like I said:AEM makes a water bypass thing that supposedly keeps your motor from sucking up water.
 
If it keeps the water out, then you will not get the air-flow benefits of a CAI. Also a lot of CAIs suck in hot air from the engine compartment, which basically any of the negligable gains you get from a CAI.
 
  
Having too little back pressure IIRC can cause your exhaust valves to get burnt.
  
I believe the back pressure is in the cats, which are legally mandated so I think you could use a sewer pipe for your exhaust and still have enough back pressure to prevent injury. A Walker, Borla or Dynomax are all considered stock exhaust replacements, your you could go with a Japanese aftermarket hot-rod type. That burning exhaust valves sounds like a turbo related issue also, I don't think NA cars can get that hot.
 
Nope, not a Turbo issue as the turbo itself provides all the back pressure the engine needs, so anything downstream that lowers the backpressure won't lower it below the level that the turbo provides.
 
As for the cat itself providing back pressure, that is true to a certain extent but then putting on something after a restrictive cat (one which would provide the proper back-pressure) is irrelivent in terms of flow because the bottleneck is still in the cat.
 
Essentially on an NA car you will want a certain amount of back pressure in order to keep your low end torque. If you put a real big open exhaust on an NA car you'll loose a ton of low end power. If you are only doing a catback, it's mostly for the noise, not the power so it doesn't matter what you put on.
 
-mike

#286 of 336 Re: Inexpensive power gains? [paisan] by lilengineerboy

Oct 15, 2007 (6:09 am)

Replying to: paisan (Oct 14, 2007 9:33 pm)
Like I said:AEM makes a water bypass thing that supposedly keeps your motor from sucking up water.
 
Air Bypass Valve for Cold Air
 
PDF of flow rate report
 
If it keeps the water out, then you will not get the air-flow benefits of a CAI.
 
Doesn't seem to be the case.
 
Also a lot of CAIs suck in hot air from the engine compartment, which basically any of the negligable gains you get from a CAI.
 
If its sucking hot air from the engine compartment, its not a cold air intake. CAIs only work when the car is moving though.
 
Nope, not a Turbo issue as the turbo itself provides all the back pressure the engine needs, so anything downstream that lowers the backpressure won't lower it below the level that the turbo provides.
 
I agree that the Turbo is the biggest bottleneck, but bing self sufficient for back pressure was not so much so in the case of RX7s and Supras.
 
As for the cat itself providing back pressure, that is true to a certain extent but then putting on something after a restrictive cat (one which would provide the proper back-pressure) is irrelevant in terms of flow because the bottleneck is still in the cat.
 
I concur; that is my point.

#287 of 336 Re: Inexpensive power gains? [lilengineerboy] by elroy5

Oct 15, 2007 (2:32 pm)

Replying to: lilengineerboy (Oct 15, 2007 6:09 am)
IMO, the very small hp gains from a catback and CAI, are usually lost in torque, which is what these engines are already lacking. All that's really gained is noise. The guy at the auto parts store will tell you what you want to hear, to get his commission. Today's cars are designed pretty well, and gains from intake and exhaust modifications are minimal (not worth the cost).

#288 of 336 Re: Inexpensive power gains? [elroy5] by paisan

Oct 15, 2007 (6:10 pm)

Replying to: elroy5 (Oct 15, 2007 2:32 pm)
IMO, the very small hp gains from a catback and CAI, are usually lost in torque, which is what these engines are already lacking. All that's really gained is noise. The guy at the auto parts store will tell you what you want to hear, to get his commission. Today's cars are designed pretty well, and gains from intake and exhaust modifications are minimal (not worth the cost).
 
That is what I was getting at.
 
-mike

#289 of 336 Re: Inexpensive power gains? [lilengineerboy] by paisan

Oct 15, 2007 (6:13 pm)

Replying to: lilengineerboy (Oct 15, 2007 6:09 am)
Also a lot of CAIs suck in hot air from the engine compartment, which basically any of the negligable gains you get from a CAI.
  
If its sucking hot air from the engine compartment, its not a cold air intake. CAIs only work when the car is moving though.
 
Yes but a lot of CAIs suck in hot air from the engine compartment, essentially the cold air comes through the radiator, gets nice and HOT and then is sucked in through the foam filter in the engine compartment. This allows more flow, due to being less restrictive, but negates the greater flow by sucking in hotter than normal air.
 
-mike

#290 of 336 Re: Inexpensive power gains? [paisan] by elroy5

Oct 15, 2007 (6:32 pm)

Replying to: paisan (Oct 15, 2007 6:10 pm)
It's just so nice to finally see someone who agrees with me. I see so many guys with CAIs and "fart cans" I wonder what they really think they've gained. They see the greatly exadurated hp gains advertised by manufacturers of CAIs and catbacks, and believe it.

#291 of 336 Re: Inexpensive power gains? [elroy5] by paisan

Oct 15, 2007 (6:36 pm)

Replying to: elroy5 (Oct 15, 2007 6:32 pm)
Absolutely. I have been working on Subies doing mods over the years and it's amazing how many kids throw on a catback and CAI and claim they feel the power. I laugh at them. We've thrown em on for them and I've actually felt the drop in power due to the mods! Amazing
 
-mike

#292 of 336 Re: Inexpensive power gains? [paisan] by elroy5

Oct 15, 2007 (6:44 pm)

Replying to: paisan (Oct 15, 2007 6:36 pm)
Then they add 50 pounds of ground affects and a giant wing, to top it off.

#293 of 336 Aftermarket for 08 Accord . . . by bug4

Oct 26, 2007 (2:36 pm)

I know this is not a performance modification -- but you guys/gals would be the ones most likely to know . . . . how soon might we expect to see after-market accessories for the newly designed 08 Honda Accord? I would be very interested in replacing the front grill in my new Accord, but there are none available at this point. Any idea how long it might take? (I wish the mesh grill from the coupes would fit on the sedans -- I think they are WAY better looking!)

Messages Page 30 of 35

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