Need Help With Single Turbo swap, tuning ext.
#1
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Need Help With Single Turbo swap, tuning ext.
Recently I went Single turbo garret gt35r with my rx7 fd3s I went with a HKS cast manifold 10psi wastegate , running stock fuel , new fuel pump, running a power fc, I wanted to keep the car close to stock without running twins anymore my twins blew up at comp. I started having issues once I installed the gt35r trying to run near stock boost , car starts and runs idles fine can rev the car too 7k -8k in neutral no problem. But once I have the car in gear and start to build boost past 4-5lbs the car starts misfiring backfiring like crazy until I let off throttle . I'm not sure what this could be, I can hear a tick or click sounds like an exhaust leak near the exhaust manifold could my car misfire from the manifold to engine leak or turbo to manifold leak? I'm stumped on this I'm not even hitting close to stock psi, I had rebuilt the engine maybe 5000 miles ago. Engine runs fine just when I go into boost it misfires like crazy. Could it be my map sensor or my tps doing this? Spark plugs? I replaced ignition wires to 10m when installing the turbo, any suggestions on what to do to help the misfiring would be much appreciated. I' did the install myself and followed this guide on the install: http://www.negative-camber.org/crispyrx7/gt35rpage3.htm
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I don't think I'm leaning out it's idleing at 11s-12s on my wide band , when I'm crusing without trying to boost the car drives fine but if I go into boost at 3-4-5psi the car starts to misfire or back fire like crazy
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I don't think I have a tuner in my area that can tune a rotary. so I'm kinda stuck , sounds like a major exhaust leak on exhaust manifold side, like a tick maybe I can post a video
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Now that I think of it, when I balp the throttle at idle it will happen aswell. If i hit the gas a few times it starts to misfire or back fire like its detonating. If I try to go into boost at all this happens. Could a major boost , exhaust manifold to turbo leak cause this? I can't figure it out for the life of me. I kinda want to take apart the exhaust manifold and turbo again just to make sure. There's a tick sound coming from the manifold maybe the wastegate. I'm pretty sure it's all right and tight down there. That's why I can here for advise or maybe if someone else has had this issue. If my motor blows I might just be done with rotarys take my 35r and put it on a ls engine. I know I'll get some hate from saying that but this is the 3rd engine I've gone through.
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#9
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If anyone has done a gt35r swap running stock fuel no ports basically a single turbo swap and power fc, feel free to chime in now.
#10
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GT35R, stock fuel obvious engine commotion. You need new fueling and tuning to keep up with turbo.
Remove foot from gas pedal, turn engine off, place keys on dashboard and step away from the car.
Remove foot from gas pedal, turn engine off, place keys on dashboard and step away from the car.
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So what bigger secondary's or duel fuel pumps? I don't want a 500hp rx7 that's too much I just wanted to keep it close to stock while having a single
#14
Instrument Of G0D.
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Recently I went Single turbo garret gt35r with my rx7 fd3s I went with a HKS cast manifold 10psi wastegate , running stock fuel , new fuel pump, running a power fc, I wanted to keep the car close to stock without running twins anymore my twins blew up at comp. I started having issues once I installed the gt35r trying to run near stock boost , car starts and runs idles fine can rev the car too 7k -8k in neutral no problem. But once I have the car in gear and start to build boost past 4-5lbs the car starts misfiring backfiring like crazy until I let off throttle . I'm not sure what this could be, I can hear a tick or click sounds like an exhaust leak near the exhaust manifold could my car misfire from the manifold to engine leak or turbo to manifold leak? I'm stumped on this I'm not even hitting close to stock psi, I had rebuilt the engine maybe 5000 miles ago. Engine runs fine just when I go into boost it misfires like crazy. Could it be my map sensor or my tps doing this? Spark plugs? I replaced ignition wires to 10m when installing the turbo, any suggestions on what to do to help the misfiring would be much appreciated. I' did the install myself and followed this guide on the install: Triple-R: GT35R SINGLE TURBOCHARGER CONVERSION INSTALLATION
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Single turbo
Um.. so guys . Apparently you can run a gt35r stock fuel. I just tore the uim apart. Found a massive boost leak for ***** and giggles I hooked up the turbo control and bam no more misfire I just hit 8psi no break up and it still wanted to pull . Idk what the hell anymore. I know I need a tune now and will look for a good tuner to help me.
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Also my boost controller was set too high I was thinking maybe that was causing the misfire aswell. All In all I'm pretty happy that the rx7 isn't misfiring now. I don't know what the hell I was thinking earlier about a ls swap. Rotarys just sound too good. Thanks for all the input it really helped a bit.
#17
Goodfalla Engine Complete
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Um.. so guys . Apparently you can run a gt35r stock fuel. I just tore the uim apart. Found a massive boost leak for ***** and giggles I hooked up the turbo control and bam no more misfire I just hit 8psi no break up and it still wanted to pull . Idk what the hell anymore. I know I need a tune now and will look for a good tuner to help me.
There are multiple factors to look at with flow. It is much more than just pressure (psi). Fuel ratios are based on the number molecules. The higher the temperature, the less molecules at the same pressure. The lower the temperature, the more molecules at the same pressure.
But good luck.