I have a problem with my civic. Fully built b16 turbo.
When i go full throttle the car has no power. Exhaust sounds like there is a problem with the ignition. I cheked the spark plugs and the distributor. Everything is OK.
When i pudh down the pedal 50% ( not full throttle) the car runs good. Full boost and everything ist ok. Only when i go full throttle the car has no power but full boost :-(
Maybe someone has a idee. And sorry for my bad english

Greetings from germany

Thanks

 

Boost leak? Even a small one can build boost but it will be underpowered

 

make sure your piping is hooked up, a hose may have come off

 

Obvious first question is are you seeing boost on the gauge?

I'd guess something like a missfire though, check your plugs.

 

yes boost is there.

i have changed the spark plugs. Everything OK

 

You've changed the plugs, but what are they gapped at? What heat range? How old is your distributor and ignitor? What does your tune look like?

 

Is the car properly tuned?

 

x2

 

x3

 

Yes the car is tuned. Runs good 10.000 kilometers. No problem. Then for one day to another this problem.

 

im having the same problem but i haven't gotten a wideband yet to check it out. its goin on the dyno this week to get squared away but until then i just enjoy the sound of half throttle lol