Power problems
#1
Power problems
I am running a fully built h22a4. Ported head, pistons, rods, etc.
Turbo charged with a turbonetics kit, I am running the kit piping (2" to fmic, 2.5" to tb) The wg is also routed back into the dp, at about a 40 degree angle approx. 12" away from the turbine.
My understanding is that this kit should be fine running at about 8-9 psi without any issues on a stock block.
My question: Is it possible that the wg dump is causing huge amounts of turbulence in the downpipe? i.e. enough to cutoff power (about 150 hp) entirely after the vtec engages.
Turbo charged with a turbonetics kit, I am running the kit piping (2" to fmic, 2.5" to tb) The wg is also routed back into the dp, at about a 40 degree angle approx. 12" away from the turbine.
My understanding is that this kit should be fine running at about 8-9 psi without any issues on a stock block.
My question: Is it possible that the wg dump is causing huge amounts of turbulence in the downpipe? i.e. enough to cutoff power (about 150 hp) entirely after the vtec engages.
#2
Honda-Tech Member
Re: Power problems (Scheizty)
i doubt the dump tube is killing the power being that far away. Didn't you say in your other post the motor cracked sleeves? Is this a new motor i'm assuming? Any new dyno graphs with the new motor?
#3
Re: Power problems (SOHC_MShue)
Nope same problem. But I do not believe that the cracked sleeves are the cause of the loss in power. It only happened lately. My curiousity was if that there could be a huge increase in back pressure between a built motor and a stock one.
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#10
Re: (siblues)
It's like this.
I had this car running before, had it tuned 3 times. Even after the 3rd tune, she still wasn't making any top end at all. About a month following the 3rd tune, it was just another day, and she started to burn coolant. It was then that I took the head off and found what I found. She has not been running since. I am currently getting the work done. I am asking now hoping that someone may have had a solution for when I get it running again.
I had this car running before, had it tuned 3 times. Even after the 3rd tune, she still wasn't making any top end at all. About a month following the 3rd tune, it was just another day, and she started to burn coolant. It was then that I took the head off and found what I found. She has not been running since. I am currently getting the work done. I am asking now hoping that someone may have had a solution for when I get it running again.
#11
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What kind of wastegate were you running? I would check it and and see if there's anything up with it, and even try a different one.
I'm guessing the tuner didn't say anything about it not getting enough fuel. What's your fuel setup?
I'm guessing the tuner didn't say anything about it not getting enough fuel. What's your fuel setup?
#13
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Re: Power problems (Scheizty)
I have heard that plumbing the wastegate back to the exhaust can help with the scavanging effect, and make more power. Not sure how far away it needs to be though.
#14
Re: Power problems (crxdonwon)
In the tune, you can see the fuel maps have less fuel near the higher end (5600-7500 rpm), although the afr was still good around 12.3.
I'm running a tial 38mm .6 bar spring wastegate.
I'm running a tial 38mm .6 bar spring wastegate.
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