ok, well, i drove my 2007 Si coupe with only 8k miles on her starting from way down in south Tx near the border to way up in upstate NY by the canadian border. just wanted to clear that up. my problem or camplaint is that my car seems like it lost a little hp and/or tq. i didnt notice the problem until i actually got to the state of Ny. as soon as i got here to NY is when i noticed this little problem. NOW..... some say all it is is that my car is broken-in now and some say it could be compression issues due to the fact of the long drive up here considering we got high compression pistons and rings. i personally doubt that it has anything to do with compression but some also say that im just thinking about it too much and convincing myself that something is wrong with the motor. i am not running lean nor am i running rich. my check engine light is NOT ON and i always change my oil at 3k miles or less. "so my question to yall is; what might be the problem with my car? am i just thinking about it too much, did my motor just break in and nothing more or did maybe by some chance i lost a little compression some how? also, i DID NOT drive day and night non-stop. i drove from 10am till like 11pm for two days in a row and then the third day i made it here in the afternoon. just wanted to let yall know that part. so my car got its FULL nights rest in between the days of my long drive and NEVER have i ever driven her all day and night non-stop. i didnt drive my car hard AT ALL the whole way up. i drove the speed limit all the way through. oh, and i only got 11k miles as of today now. so let me know yalls input and/or suggestions.... thanks

 

change your oil every 3k is what you said.

car had 8k when you left, right? Should have had an oil change 2k miles before you left.

you then drove 2k miles, bringing you 1k miles past your self imposed oil change interval.

now you're at 11k, have you changed the oil yet?

you may just be experiencing old oil for the first time.

 

did u gas up in any NE state we had addatives in our gas during the winter thats prob ur problem when u go back home u will be ok. plus ur oil is very used once u change it u will aslo notice a diff

 

Yes, if you dont do your first oil change those little shards of metal are just chillen in your engine.

 

NO NO NO in reguards to all that have replied to my post...................i had a new oil change before i left and got one as soon as got to NY. since then i have changed my oil one more time and now i am gonna change it here soon. but what i meant is that my car currently has only 11k on her. but i did start my trip on new oil and changed it as soon as i got here to NY. so now that i cleared that up about the oil what do yall think it might be then??

 

Either its the gas like someone already said, ( I know they have Ethenol in the gas. ) or tune up your car. If on the off chance that there is something wrong with it the warranty will cover it

 

Are you sure you aren't just freaking yourself out? Or, is it a very noticeable loss of power? Is it sluggish, or did it just 'feel' slower?

I ask because, I too thought my car was getting less powerful. I even compared 0-60 times (with a stop watch) to ones that I had recorded at 1k miles. They had actually got slightly faster, due to me getting used to the car.

Now, that you have had it for a while, the initial 'shock' may have worn off. You might be more used to the car by now.

I'm not saying you are imagining things. Just a suggestion.

 

shouldn't need a tune up. Gas would be my guess since my oil guess didn't pan out.. lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2008fijibluesi &raquo;</TD></TR><TR><TD CLASS="quote">Are you sure you aren't just freaking yourself out? Or, is it a very noticeable loss of power? Is it sluggish, or did it just 'feel' slower?

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He is going by the butt dyno on this one. Never mentioned that it was running poorly, just said "my car seems like it lost a little hp and/or tq"

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IT GUY &raquo;</TD></TR><TR><TD CLASS="quote">shouldn't need a tune up. Gas would be my guess since my oil guess didn't pan out.. lol</TD></TR></TABLE>

Hahaha. Yeah. Gas is definitely a possibility.

This is a little different, but one time I went to Shell to fill my car up. My gas light was on, with one bar on the gas gauge so I had (at most) a gallon and a half in the tank. I told the guy "fill it with v-power please" and went inside to take a leak. I came out and the guy was like "I made a little mistake. I accidentally put 10 gallons of regular in your car. But, it's okay because I topped it off with super. It comes out to blah blah". I was so pissed, and told him I wasn't paying for an ounce of that gas. I laughed in his face when he again told me "It's okay because I topped it off with super". He had to go get the manager and they gave me the gas for free. The car didn't run bad but I never really pushed it until I was sure that gas was out of my tank. I didn't want any pinging from my (at that time) 1 month old engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IT GUY &raquo;</TD></TR><TR><TD CLASS="quote">

He is going by the butt dyno on this one. Never mentioned that it was running poorly, just said "my car seems like it lost a little hp and/or tq"

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Yea that's why I am suggesting that he might be freaking himself out, if it's not the gas or oil lol.

Butt dyno lol

 

I'm thinking it was just the gas you pumped. If you are really worried do a compression test and that would tell you if you do in fact have a problem.

 

does anyone really know WHY Jersey folk aren't allowed to pump thier own gas. None of my NJ buddies from school (in philly) can give me an answer.

sorry for the hijacking, i'd say it was crappy gas too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jaepalm &raquo;</TD></TR><TR><TD CLASS="quote">does anyone really know WHY Jersey folk aren't allowed to pump thier own gas. None of my NJ buddies from school (in philly) can give me an answer.

sorry for the hijacking, i'd say it was crappy gas too.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wikipedia.com &raquo;</TD></TR><TR><TD CLASS="quote">All stations in New Jersey and Oregon, however, are mini service; attendants are required to pump gas because customers are barred by statutes in both states from pumping their own gas. Both states prohibited self service in the 1940s because of fears that customers would handle gasoline improperly. Oregon's Department of Environmental Quality has also ordered a ban on self-service gasoline because of[citation needed] inexperienced pumpers being a significant source of groundwater and air pollution. Oregon's state fire marshal has also ordered a ban on self-service gasoline. Today, these states enforce the law because of the rapid increase of drive-offs[citation needed], where people fill up their car and drive away without paying for gas. In 1982, Oregon voters rejected a ballot measure sponsored by the service station owners, which would have legalized self-service gas.

There is a widespread belief that mini-serve is more expensive. A comparison between gas prices in Portland, Oregon and its suburb of Vancouver, Washington shows prices at mini-serve stations in Oregon are on average 3 to 10 cents cheaper than their self-service counterparts in Washington, suggesting the net effect of adding attendants to the price may be small or non-existent. However this comparison is skewed by the difference in state gasoline taxes between Oregon and Washington; Washington's excise tax on gasoline is 36 cents per gallon, while Oregon's tax is only 27 cents per gallon.[1] So the actual difference is in the range of 1 cent cheaper to 6 cents more expensive. Likewise, New Jersey almost always has cheaper gas than its neighbors New York and Pennsylvania; such a difference could be explained by the presence of six refineries that produce 50,000 barrels per day or more of refined petroleum products, or more likely the state's low gas tax, the third lowest in the country behind Alaska and Georgia, at just 14.50 cents per gallon.[2]

The constitutionality of the self-service bans has been disputed. The Oregon statute was brought into court in 1989 by ARCO, and the New Jersey statute was challenged in court in 1950 by a small independent service station, Rein Motors. Both failed. In addition, throughout the rest of the United States, the Americans with Disabilities Act requires that the equivalent of "mini-serve" be provided to any individual displaying a disabled parking placard.

In both New Jersey and Oregon, it is legal for customers to pump their own diesel (although not every station permits diesel customers to do so; truck stops typically do). The intent of the Oregon Law is that diesel is not as flammable, and therefore poses less of a hazard to Oregon citizens..</TD></TR></TABLE>

 

I read somewhere once that it is like an insurance thing or something. I also read that we "can't get rid of the 20,000 gas station attendants." That doesn't really make sense, because someone still needs to be there, whether they pump your gas or not.

When I am at work (landscaping) I pump my own gas into the truck, and all of the machines on the trailer. We go to the same gas station everyday, so the attendant comes over, swipes his card and lets us do our thing.

If I get impatient in my car, I just pump my own gas. No attendant has ever said anything about it. If I don't pump my gas, I watch them like a hawk to be sure they are careful and don't put the wrong gas in.

It's stupid either way. Attendants are slow, and most don't speak english well. I don't trust some guy talking on his cell phone to be able to pay attention enough. Numerous times I've had them not stop talking on their phone long enough to really listen to me. Instead of the $15 I told them to put in, they put in 20 dollars. Sure I have a $20 bill, but I told him to put in $15. Also, they are clumsy, and scratch my paint with the nozzle, or spill gas on my car. I just wish I could do it myself. Gas prices would go down even more too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IT GUY &raquo;</TD></TR><TR><TD CLASS="quote">

He is going by the butt dyno on this one. Never mentioned that it was running poorly, just said "my car seems like it lost a little hp and/or tq"

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Theres really not that much torque to lose, especially enough to feel it right???

 

i drove my supercharged si
from NY to florida IN summer
and back

with Z E R O issues.

i got an oil change with synthetic prior to leaving
and had one done at a honda stealer when i was in orlando

 

have u ever thought of elevation.
thats plays a big factor.
say for instance in my situation, i live about 2300 ft above sea level i think, but im the mojave desert.
i drive to l.a. and it feels like im driving a totally different car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2008fijibluesi &raquo;</TD></TR><TR><TD CLASS="quote">Are you sure you aren't just freaking yourself out? Or, is it a very noticeable loss of power? Is it sluggish, or did it just 'feel' slower?</TD></TR></TABLE>

i think i may just be freaking myself out like you say. also i sometimes think its just that the engine is broken in too. sluggish?................um, not really other than the DBW throttle deal. as far as slower, no, not really either.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by i-VTEC_DOHC &raquo;</TD></TR><TR><TD CLASS="quote">have u ever thought of elevation.
thats plays a big factor.
say for instance in my situation, i live about 2300 ft above sea level i think, but im the mojave desert.
i drive to l.a. and it feels like im driving a totally different car.</TD></TR></TABLE>

you know, actually i have thought about that but arent all Si's tuned the same? and doesnt the MAF employed sensor do its job for elevation issues and such things that would affect the air/fuel ratio??! BUT yes, you do have a really good point there with the elevation thing. i live like a mile if that from the beach in south TX (sea level) and the elevation to where i drove to and am at now is roughly around 500ft give or take so then yeah, maybe it might be that. IF it is what would be the right thing to do IF this is the issue? i wouldnt know cause i grew up by the beach and never drove around elevated places............................................ ..?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type X &raquo;</TD></TR><TR><TD CLASS="quote">i drove my supercharged si
from NY to florida IN summer
and back

with Z E R O issues.

i got an oil change with synthetic prior to leaving
and had one done at a honda stealer when i was in orlando


</TD></TR></TABLE>


cool, thanks, thats somewhat of reassurance for me there. since you got an FI Si and you say that everything went good then i will take your word for it

 

Could it have been the temperature change?

 

I would say:

Gas quality
Temperature
Elevation changes

Are all good reasons why the engine feels sluggish.

Did you check tire pressure too? It sounds dumb but it might be a reason your car feels different.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdimi34 &raquo;</TD></TR><TR><TD CLASS="quote">Could it have been the temperature change?</TD></TR></TABLE>

you know, i thought about that too and being that i got a cold air intake im thinking that "maybe" the air is so dense that it makes it feel the way it does. the other day the temp warmed up to the mid 40's and it kinda felt like it ran better. thanks for the suggestion! anything else that yall can think of? i just really want to rule things out so that i wont be burdened by this. thanks!

 

Air filter pull it out and see if it is dirty?

disconect battery for a bit and reset?

loss of back pressure from exhaust leak? something got jarred loose?

 

Reset the ECU and hope it was because of a change in elevation and gas octane.