How to run a wideband?
#11
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Why not install it in the vertical section of the riser and do your best to get your afr set up quickly. This would mean plugging the sensor bung with a blank til you get out away from idle territory. Then install it once the engine is warm, skip over the idle part of the tach and get your afr at cruise and high speeds. Then, since reversion is an idle speed phenomenon, back down the rpms from 1500 or 1800 to idle real quick and shut down the engine while the sensor is installed. If you are concerned about ruining the sensor, remove it once you have a tune or if you need to spend extended time at idle. Or continue to run it and see if you have a reverting setup. If you kill a $70 sensor it's better than ruining your entire engine. Wetting the sensor doesn't destroy the entire kit.
I am getting a wideband this winter and was thinking I''d remove it once tuned. But now I'm planning to try running it full time. I didn't go all out with my cam, for a marine small block it has a lot of lift, normal lobe separation and greater than stock duration. So I'll have to see what I get.
I am getting a wideband this winter and was thinking I''d remove it once tuned. But now I'm planning to try running it full time. I didn't go all out with my cam, for a marine small block it has a lot of lift, normal lobe separation and greater than stock duration. So I'll have to see what I get.
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I have a 5.3l in a ls running both stock and ls9 camshaft, both had horrible reversion issues. Just an FYI
Not sure how I'm going to fix it yet but I'm talking to a few cam suppliers and having a custom one made.
As far as 02's they work great for tuning but they wont last much over 10hrs. I'm running Holley HP efi on my set-up and I just turn closed loop off after I got everything dialed in. This is on a twin turbo LS on pump gas as well.
Not sure how I'm going to fix it yet but I'm talking to a few cam suppliers and having a custom one made.
As far as 02's they work great for tuning but they wont last much over 10hrs. I'm running Holley HP efi on my set-up and I just turn closed loop off after I got everything dialed in. This is on a twin turbo LS on pump gas as well.
what was your boat and exh setup?
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Never said it was NA infact its twin turbo's, it currently has a LS9 cam that a buddy give it to me to try out, didn't care to much for it but that was this fall, My winter project is to research cams and choice the right one(wether it be custom or not) not a lot of info out there about LS marine engine and even less when you start adding boost to them.
If you have any suggestions I'm all ears, I was just stating the issues I had.
Here is a pic of my set-up, Its PCM manifolds with custom adapters that go from the manifolds to a T3 turbo housing then out the turbos to a waterjacketed 3" stainless pipe that mix the water and exhaust 13" past the turbos.
If you have any suggestions I'm all ears, I was just stating the issues I had.
Here is a pic of my set-up, Its PCM manifolds with custom adapters that go from the manifolds to a T3 turbo housing then out the turbos to a waterjacketed 3" stainless pipe that mix the water and exhaust 13" past the turbos.
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Never said it was NA infact its twin turbo's, it currently has a LS9 cam that a buddy give it to me to try out, didn't care to much for it but that was this fall, My winter project is to research cams and choice the right one(wether it be custom or not) not a lot of info out there about LS marine engine and even less when you start adding boost to them.
If you have any suggestions I'm all ears, I was just stating the issues I had.
Here is a pic of my set-up, Its PCM manifolds with custom adapters that go from the manifolds to a T3 turbo housing then out the turbos to a waterjacketed 3" stainless pipe that mix the water and exhaust 13" past the turbos.
If you have any suggestions I'm all ears, I was just stating the issues I had.
Here is a pic of my set-up, Its PCM manifolds with custom adapters that go from the manifolds to a T3 turbo housing then out the turbos to a waterjacketed 3" stainless pipe that mix the water and exhaust 13" past the turbos.
Im sure you would be MUCH better off with a TBSS intake manifold, right cam, plumb discharge pipes into a A/W intercooler like the marine procharger kits use (like a racecar air/water) then into the TB. Tons better low midrange tq, less heat soak from manifold (your not only cooling off charge air with that setup your trying to cool engine block heat soak
The engine doesnt know its in a boat. All it knows is backpressure, manifold wave tuning and valvetrain dynamics and that setup doesnt look like it would make it very happy. Wait is your wideband between exh valve and turbine or after turbine?