Well I have the 2.0 S Engine and wanting to change it to the H22 later but I kinda need this car to run for me now, I have a similar but a bit different problem than one of the others on here and I posted this in there as well (Trying to get an answer for this),
I will get in my car and it drives fine and everything at first and will get up and go, I have out ran a 2009 subaru in it it has 103k original miles. here is my problem Drives great, and everything at first and everything the first time while it was still cold. but then I will stop and turn her off and go in even the convienent store, come out start her up---- sometimes she is hard to start sometimes she starts right away- this is I think that relay under the dash behind the Fuse box I will check that out but the other problem that concerns me is I will go driving down the road after I have gotten her started and she will shift into first and second fine and sometimes third but when it gets to fourth and after the initial shift and before the secondary it boggs down and just totally tries dying on me like it lost all its power and I will try pumping the gas but still keeps dying more and more till I have to try Cranking it over and it then takes quite a few tries to re start it while I am coasting down the road to a stop, lawls. Like I said it sometimes dose this in 3rd as well, there are other times where it won't do it at all.

Things I have done so far are I have changed out both Fuel filters, I have checked the Fuel pump it is working strongI also have taken and Blown thru the fuel line at certain parts and cleared them out, so I know it is none of that. I have also gone thru the Spark plug wires and plugs as well as the Coil all of them are opperating fine I have not checked the Distributer its self but not sure that would be the problem, I was also kinda thinking it might be a sensor or something, I also have made sure it is getting Air into it and baught one of the STOCK style Air filters for $25 wix brand. if someone has some good sugestions on what I should look for or change out on this to get it to stop doing that I would really appriciate it.
Thanks

 

Same things happening to me in my prelude.. But it started after I started to pump premium into it..

 

I don't put Premium in mine I normally put the Plus I figure its better than the Regular to put in. any how part of my problem on this was also the radiator fluid was low, how that would play into how the vehicle drove is beyond me. I honestly think they may have built a safety mechanism in it where if it gets to where its going to start over heating or theres not enough fluid flowing thru the Radiator the car might go into shut down mode