I would tend to think of it more as speculation than hard info..

Warmer weather, better fuel atomisation? Sounds unlikely that general accumulated grunge is to blame. I was tending to think more along the lines of a small piece of something (grit, errant manufacturing swarf?) partially blocking an injector.

Have you had the fuel filter flow rate checked? Another unlikely, but I'm shooting in the dark a bit!

Even if it seems to fix itself, it will prey on your mind, never know when next time will be!

I'd be more inclined toward a CAI (cold air intake) than a SRI. The trouble with SRIs is that they suck hot air from inside the engine bay, and hot air definitely costs power. I believe the rule of thumb is for every additional 10°C induction temp you lose 1% power, so if the engine bay were say 70°C and ambient were say 20°C you'd be losing around 5% power, for no good reason.

Ignoring any temp considerations, an SRI may or may not make more power, may make less power, or may make more power somewhere in the rev range but less somewhere else in the range. It would depend on whether or not your engine was sensitive to induction tract lengths or not, and if so how so, and how much so.

The rule of thumb is that shortening the induction tract will tend to gain top end power, but lose bottom end. The opposite is the case if lengthening the tract. The length of the manifold / ports (tube from valve heads to the larger cavity of the plenum) is probably the most important part in this respect, a change in this length is likely to have a pronounced affect. But, the overall length of the whole system up to at least the throttle body will probably be significant.

I don't know what sort of SRI you might use, but if it's the kind that eliminates the plenum andreplaces it with seperateinduction tubes and throttle bodies for each cylinder then I doubt it would workwell at lower rpm. A CAI will use the existing plenum and throttle body (and possibly filter), and I expect would have little affect on the 'tuned length' of the induction system...

Are you an induction roar junkie? An SRI is likely to be quite loud, OK if you like that sort of thing (I just love the sound of a set of unsilenced Weber DCOEs on full noise!), but it can get wearing after a while. An unslilenced induction can make as much or more noise than a loud exhaust sytem, be warned!

Assuming an SRI won't cost you power but in fact gain you some, an SRI hooked up to a CAI might be the best of both worlds, still noisy though, perhaps less so than just an SRI (?).

 

Again, thanks for all the info. I guess I'll skip the add ons. Sounds like it can hurt more than it helps, and I never had any of that work done, so I don't know where you got that information. Ain't me.

 

Thinking back, they did replace some kind of module that was causing a roar to come through the sound system, that noise-cancelling stuff on this type car, but they never had to tear out the transmission to do it. It didn't take over an hour to fix.

 

that's odd that hondatechav would find those repairs but you're not aware of what they are, the car only had like 178 miles when you bought it and you're the first owner so I wonder where those notes came from...


On a side note I don't think the SRI is going to hurt anything except it can add some noise (that nice low grumble when you romp on the throttle), I'd probably just wait and see what the dealer says on it...

 

Due to affects on induction tract harmonics, an SRI may well not hurt power at all, it may affect power to an unoticable degree (+ or -),it may to a noticable degree, or it might be noticably beneficial, hard to say how long the string is until you've measured it. Most SRIs I've seen draw air from inside the engine bay, which isn't a 'good thing'. Some don't even have filters installed, very bad!

Hot induction air is well recognised to rob at least some power in just about any application, why racing cars almost universally use non restrictive cold air intakes. Even the car manufacturers seem to have resognised this, I can't recall seeing a newer car that draws air from inside the engine bay for quite soome time. This might not be done for any power reasons, may be more of a fuel consumption issue for them(?), some of the factory CAIs are very restrictive (not good for power).

If you want some increased induction music, an aftermarketCAI will almost certainly be louder than the standard induction piping etc. Keep in mind too that many standard induction tracts are quite restrictive before the throttle body, often only at one point, but that's all it takes to strangle the engine, at least to some degree.

 

yeah, the second warranty repair was the active noise control unit was replaced. the first repair - 07/25/07 07/24/07 63143 12,132 118099 03217 1A810-RCJ-003 - shows the stator position sensor was replaced. trans had to be removed for that.



#12 - it's goes around the crank.

 

Hmm, that's the fastest transmission tear down and put back I'd ever heard of! They sure didn't mention doing that, to me.

Today was about the same old same olds. Ran great before warm up, then just fair after about an hour or so city driving. Where I'm noticing it most is when a car ahead has turned off, I'm doing around 25mph, then I want to accelerate. It will feel like it's smothering a bit for more gas or air, whichever. Not a severe drop, but to me, adrop, more than it has had. I mean it ticks me to have a hard time keeping up with a granny in her Buick unless I floor it, then I get 5krpm andit will catch up. You kinda want more from a 255 V-6.[:@]

 

I just emailed the foreman something else that has haunted me about that car. When I was cleaning it out way back, I found a piece of paper in it with another person's name on it as if it had had a previous owner! We bought it new, and with that low a mileage, I don't know why that paper would've been in the lockbox or wherever I found it. Wish I could find that paper now.

 

well, do you have the reciept for that visit on 7/24 or 7/25?

 

No, but I do have THIS from my shop foreman about how people can know so much about my car.