ok guys, i just tapped the map sensor right now and i didn't reset the ecu due to not relaly knowing how to but i drove the car and it feels like it breaths better now. Seems smoother but it isn't fully there yet so i am assuming this just might be the problem. It feels now to be 1/4th of the way there to its normal self. I have warranty on my car, so what should i do? anything i can do to fix the map sensor?

 

One tap should do it. Pull the backup fuse. The fuse box is located right above the left foot rest. It is the second fuse from the top (first slot is empty unless you have Canadian model with daytime running lights then it would be the third fuse from the top) on the right hand side. It is a 7.5 amp fuse. Pull it out for 30-40 seconds then put it back in. The ECU will then be reset.

The info that you gave us earlier did not exactly correspond to the hypothesis as VTEC not engaging and the map sending a bad signal are two different things.

Good luck

 

How does your car idle?

 

the car idle's fine. A better way to detail it is that it seems as if it has problems breathing and now it seems a bit better but ithink i hsould just go to honda and ask them to fix it but i am not sure what to say. if you guys know how i should approach htem that would be great. And with the vtec description, yea sorry wasn't the greatest but it jsut felt like i was driving an LS motor as oppose to lets say an LS-Vtec. YOu couldn't feel it for shit and second gear feels taht way but first gear seems to have taht pull a lil bit now. I rem. before this problem second gear vtec seemed really strong, now you can't feel vtec or as in should i say the 6k's plus pull at peak power.

 

I have read previous threads where an owners car was idling very rough and inconsistent. They whacked the map, reset the ecu and their S ran like normal afterwards. Outside of rough or inconsistent idling, I know of no other reason to suspect the map sensor.

In your case, you can easily rev to 9k rpm smoothly, you have no cel and you say it idles fine. On top of that, the tech could not find anything wrong with your S.

All I can say is that if you honestly feel you are down on power, then just tell the dealer what you honestly feel. Suggest a compression test. That should give them the info they need to make a proper analyses and give you peace of mind.

My advise to you is to simply just keep driving it and enjoy it. You have a nice car dude I would also post in your local forum and try to hook up with some peeps, arrange a meet or something.

 

You said you had your oil changed at jiffy lube. I'm not trying to bash jiffy lube or anyone that works there, but they may not always use the correct oil filter. If they are using the new smaller style filter that honda has switched to, this could cause a problem. For some strange reason honda went to using these new smaller filters on everything but the s2000 and Insight. The Insight uses an even smaller filter, but the s2k conveniently uses the old larger style filter, which has been given a new part number and costs more than the old filter. Enough rambling, the smaller filters do not allow enough oil to flow to the head at high rpm's causing driveability problems and noises in high revving honda motors, more notably the f20c or most B and H series motors. I would highly rec. getting the oil changed at a dealer or at least get the genuine honda filter for the s2000. At 9k miles it is almost impossible for the Vtec solenoid screen to be clogged, unless the car was run out of oil. If there were a solenoid problem it will most likely code, but the most noticeable thing would be horrible jerking and vibration from the solenoid valve not operating correctly.

 

If the car was ran out of oil, it wouldn't be long before it started knocking.

The smaller the filter, the less volume, but higher pressure. The larger the filter, the higher the volume, hence a lesser pressure.

The S2K has a high volume/high pressure oil pump, therefore I would stick with the larger, higher volume oil filter. The smaller filter may build greater pressure, but not with enough volume.

IMO, I don't think BA SweepeR B6's oil filter has anything to do with any abnormalities.

 

It was just a suggestion with the oil filter. Also, you'd be amazed at how long it can take an engine to start knocking when there is a lack of oil. The whole 9k miles and a weak motor is very strange for a Honda engine. Personal experience of noise and driveability complaints from customers of the Honda Dealership that I work at, were solved by using the correct oil filter, and correct weight oil. It's a lot cheaper than putting the car on a dyno, and it surely isn't going to hurt to change the oil. I'm sure it's already been posted on here, but most cars not just S2000's seem faster when you first purchase them, than when they do even a few weeks later. That's just a need for a bigger adrenaline rush.