so when i take off the engine bogs and when around 3000 rpm it picks up a little of power. any ideas? i think it i should check like the vacuum or something like that? the motor is a obd1 in my honda civic dx hatchback 1999. which is you guys should know is a obdII.

 

aaannnyyyoonnnee??????

 

yeah.
check out the electrical system... how old are the plugs? are your battery terminals dirty? are your grounds full of dirt and not making such a great contact to the body anymore?

Also.. motor mounts. i have a '99 civic EX and my motor mounts are absolutely shot. If you have the same issue, it will affect you under 3k rpm ( look for bouncing motor when you rev through the throttle body.. ). you'll feel it.

Just some ideas. I cleaned off my electrical contacts and it helped a ton. I used to have to get into 1st gear by revving to 2500rpm.. ha ha. Now it's more like 1750.. still need to do the motor mounts.

Good lucke.

 

check your timing, or fuel filter

 

what ECU are you running?

 

its a 93 del sol si something like that . i just brought it to the shop and he said it was the timing

 

I had the same problem timing, any codes showing?

 

am not sure i just install a si cluster and it seems some wires aren't in the right place. my fuel and temp aren't working. the fuel light just stays on and the temp is just down.