no boost after 5000 rpm
#1
no boost after 5000 rpm
so i have had my setup running good for about 2 days now. everything was fine untill today. it wont give me boost after 5000 rpm. it weird as hall. its not like its cutting fuel or a boost leak it just goes back to stock motor power and finishes out the rpm range. btw its a t25 on 15 pounds. hf mani, afc hack, p28 ecu in a 90 4d civic
#4
Re: no boost after 5000 rpm
Originally Posted by iLLstate
Turbo running out of breath up top??
#5
Re: no boost after 5000 rpm
well this is how i tuned the car. i bought 3 sets of spark plugs. put one set it when t out and beat on the car. no problems accept the tip of the plug was white so i turned up the fuel and put the new set of p[lugs in. then went for another couple of pulls up to 4th gear and it got better. so i do it again and now its running a little rich but it ran fine untill saturday night when i really went out and beat on it. i would suspect some piston damage but it runs like a champ. even at adle. just gives up around 5k. idk. i was thinking ecu throwing map code but havent checked yet. keep the thoughts comming
#8
Re: no boost after 5000 rpm
well if you figure out that its not your fuel managment.. which is probbaly where i would start considering u are running a afc. But i had a very similar problem about 1 1/2 years ago and may sound weird but it was my head gasket.
here is a vid of what my car was doing at the time.
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i read in a magazine some guy describing the exact same thing mine was doing and he found out it was a head gasket. I changed mine and it never did it again.. may sound weird and i could explain it but it would take alot of explaining to do that.
here is a vid of what my car was doing at the time.
<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/IaxXg5ZqjtM...</param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/IaxXg5ZqjtM&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
i read in a magazine some guy describing the exact same thing mine was doing and he found out it was a head gasket. I changed mine and it never did it again.. may sound weird and i could explain it but it would take alot of explaining to do that.
#10
Re: no boost after 5000 rpm
Originally Posted by 2poor2tune
well this is how i tuned the car. i bought 3 sets of spark plugs. put one set it when t out and beat on the car. no problems accept the tip of the plug was white so i turned up the fuel and put the new set of p[lugs in. then went for another couple of pulls up to 4th gear and it got better. so i do it again and now its running a little rich but it ran fine untill saturday night when i really went out and beat on it. i would suspect some piston damage but it runs like a champ. even at adle. just gives up around 5k. idk. i was thinking ecu throwing map code but havent checked yet. keep the thoughts comming