Cx racing turbo kit installed now has rough idle and goes rich after start up
#21
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Just installed turbo on 92 Miata, currently have stock ecu, stock injectors, wide band sensor. I do plan on purchasing megasquirt ecu, and 420cc injectors. I did first start up it idles fine for about 5 seconds then goes really rich and wants to die. Any recommendations?
#23
Well seems we have a ton of tuning experts, seemed to miss the class on spelling holley though, thanks for the tip! Also knowing people will do whatever the hell they please was reasoning to offer the stock ECU option. While NOT a good option, it's not impossible. Using standalone is ALWAYS. THE. BETTER. OPTION. But if you're a broke kid and don't mind blowing your car up go for it
#24
Take off turbo kit. Install Megasquirt. Learn to tune. Install injectors, learn to compensate for new injectors. Install turbo kit. Have a great time tuning for boost because you already learned how to do it on a stock motor. Be happy that you didn't blow up a motor using a stock ECU at first.
(big noob here, only owned the car about a week now, trying to learn as much as I can)
Thanks
#25
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Hm. I have a 1.8 with the FM turbo kit. I just bought a MegaSquirt, and I also got a lightweight flywheel and stage 1 clutch already on the car. I didn't buy injectors though...Do I need new injectors for a low boost tune, or will the stock injectors be good enough? I'm not planning on trying to max out the car's power with the tune, but looking more for a "casual" tune I guess. Does that matter?
(big noob here, only owned the car about a week now, trying to learn as much as I can)
Thanks
(big noob here, only owned the car about a week now, trying to learn as much as I can)
Thanks
Most here recommend flowforce 640cc injectors. $300 but well worth it.
#27
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As you increase x so must you increase y
If x is increased and injectors are maxed out, y won't increase, creating a lean condition, ping, detonation and boom, gouged pistons, low compression, hole in the side of the block.
Moral of the story, more air needs more fuel.
#28
X amount of air needs y amount of fuel.
As you increase x so must you increase y
If x is increased and injectors are maxed out, y won't increase, creating a lean condition, ping, detonation and boom, gouged pistons, low compression, hole in the side of the block.
Moral of the story, more air needs more fuel.
As you increase x so must you increase y
If x is increased and injectors are maxed out, y won't increase, creating a lean condition, ping, detonation and boom, gouged pistons, low compression, hole in the side of the block.
Moral of the story, more air needs more fuel.
#29
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You could technically run low enough boost to not need new injectors. But once you have megasquirt and a turbo, injectors are literally the only thing between a 150whp setup and a 230whp setup.
#36
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You blow up your engine. That's pretty much when you know.
If the boost spikes, assuming you even heard the detonation, you would literally not be able to remove your foot from the throttle quickly enough.
At 6000 RPM the engine is turning 100 times per second. That means there are four cylinders each being fired 50 times per second, so that's a total of 200 ignition events per second. One properly lean detonation event can break a ring and piston and destroy your engine. One.
If the boost spikes, assuming you even heard the detonation, you would literally not be able to remove your foot from the throttle quickly enough.
At 6000 RPM the engine is turning 100 times per second. That means there are four cylinders each being fired 50 times per second, so that's a total of 200 ignition events per second. One properly lean detonation event can break a ring and piston and destroy your engine. One.
#39
You blow up your engine. That's pretty much when you know.
If the boost spikes, assuming you even heard the detonation, you would literally not be able to remove your foot from the throttle quickly enough.
At 6000 RPM the engine is turning 100 times per second. That means there are four cylinders each being fired 50 times per second, so that's a total of 200 ignition events per second. One properly lean detonation event can break a ring and piston and destroy your engine. One.
If the boost spikes, assuming you even heard the detonation, you would literally not be able to remove your foot from the throttle quickly enough.
At 6000 RPM the engine is turning 100 times per second. That means there are four cylinders each being fired 50 times per second, so that's a total of 200 ignition events per second. One properly lean detonation event can break a ring and piston and destroy your engine. One.
#40
So the previous owner set up a VooDoo box Piggyback on the stock ECU. The car is actually running really, really rich right now. Idling at about 11-12, WOT is 12-12.5, and cruising is 12-13 (On average). I bought a MegaSquirt but I need to cut out the Voodoo and resplice the wires I think because the car turned over but wouldnt stay on with the Piggyback still wired into the wire harness with the MegaSquirt on.