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powerfuldodge
Well-known member
Just wondering if guys with turboed sleds are running EGT guages. 
EGT Guages ,are they needed
- Thread starter powerfuldodge
- Start date
I ordered the Silber kit and it says it comes with all the gauges but not sure if he includes EGT sensor? I would think you would want it.
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Kestrel2126
Well-known member
I wouldn't say you "Have" to use EGT's, but I would highly recommend having either EGT's or an AFR setup on any turbo sled. AFR has become more popular in the last year or two, due to companies like Koso and Digatron, building AFR products that can withstand being on a sled. The drawback to AFR on a two stroke, is that the sensors have a tendency to get fouled. However, EGT's are far from failproof and can easily be misread and misinterpreted.
I clean my clutch faces every trip can you just clean the probe for the AFR so it doesn't get fouled?
You don't need both, but one or the other is very strongly recommended. Now which one, AFR or EGT, that's the question. I know guys that swear by one or the other. I ran both on my two turbos last year. Was surprising to see that 1250F was almost dead on to 12.5 on the AFR. I don't know of any turbo kit that comes with with EGT or AFR standard. I don't think there is any way to reliably clean an AFR probe.
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Kestrel2126
Well-known member
I don't know of any AFR probes that can be cleaned without damaging the sensor. One thing though, is that with the newer emissions regs for sleds, they are cleaner running, and therefore don't seem to foul the sensors quite so bad as just a few years ago. Initially, you may go through a sensor or two, trying to get the sled dialed in, but once you have everyhting set up properly (Fuel, Oil, Etc.), you shouldn't foul often at all. Hopefully this helps. Not trying to steer you one way or the other. I personally use both (not on the same sled) and find either very helpful.
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jsandgren10
Well-known member
I wouldn't worry about an egt with using the AF provided. The pros use so much less oil than most sleds especially older sleds. A lot of guys say they used 1 gallon for a season close to 1000 miles. To me EGT gauges are so dependent on placement and how far the probe is sticking in the y-pipe, etc. Plus having to have bungs welded on, just gets to be a pain.
The AF is just easy to read, and you know what number you need to get to. EGT gauges seem like you tend to worry more because if one jug is hotter than the other you start to wonder and end up watching the gauge more than you ride.
The AF is just easy to read, and you know what number you need to get to. EGT gauges seem like you tend to worry more because if one jug is hotter than the other you start to wonder and end up watching the gauge more than you ride.
EGT helps you to monitor the temp in your cylinder. Without one you tuning blind and you run the risk of burning your sled down. AFR is an added beni to the EGT for fine tuning.
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jsandgren10
Well-known member
I could see using egt if you had no map and were tuning your sled totally. But with so many out there running most will have you preset to the right amount of fueling. I never ran one with any of the big bores, etc I've done. I think if you are buying a turbo kit you won't need an egt gauge.
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Boyko
Well-known member
Really....................... I have not used a egt for 5 years started using o2 on turbo sleds. Lost one set of pistons in that time and the o2 gauge told me they were going to bake. It is a mater of personal prefrance
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powerfuldodge
Well-known member
Thats what I ws wondering. This will be my first turboed sled , so just watch your air /fuel gauge to see where your at. What is the ratio most people shoot for?
Ive got two intercooled Bd kits coming for the pro this year. Justin Barnes tells me that theres no need for gages on the Bd kits as they come spot on in every way. I hope thats right, hes has never lead me astray so i say you dont need them as far as the BD kits go. Id think if they were worried about it and didnt want to get a bad rap they would put them in the kits just to be safe. Where as they dont i tend to think its pretty fool proof. Im good with that, more cash to spend on more important things.
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Boyko
Well-known member
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Boyko
Well-known member
It depends what it is but around 12.3 is usaly safe for a 2-smoke.
A af gauge will not tell ya if your cylinders are burning even, it sometimes glichy and defiantly not as reliable as a egt, will not give a accurate reading if your sled has the slightest of sputers. What it does do it does well, there fast and accurate, you can actually see the fuel mixture go rich 1/4 a second after you pin it. You can get a really good feel for your sled and not even need any gauge after having one. Again it is a choice and preference.
Your going to love boost, it is cool.................unless you have to much of it
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powerfuldodge
Well-known member
I do love boost, run 65PSI of it in my truck.
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barry1me
Well-known member
ya buddy you and me both! BTW how do you like the 6.7L cummins? Have you had a 5.9L in the past?
Turboed the same time, EGT on all of them. Never lost a set of pistons. EGT and AF gagues are cheap insurance
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powerfuldodge
Well-known member
I had a 2003 3500 manual and really liked that...That truck had tons of work but this one is limited to the tranny. I run it at 492HP and 950ftlbs/tq towing the camper ,sleds and I have been trouble free for the last 2 1/2yrs.
Once they come out with the 6.7 H.O. with a manual tranny in the long horn i'll get a new truck. I like mine now the mega cab with the long box is the ultimate truck for me.
I started my turbo tuning with a wide band, seemed like the logical choice coming from cars. Got the Koso and it was all over the place, but I placed it in the expansion portion of the pipe (I know I'm a da). Got a new bung and welded it in post turbo, still read seemingly sporadic. Thought I may have ruined my sensor so I got another (100 bucks). And it was slightly better, but not what I was used to in cars. Finally broke down and bought a egt, huge improvement. I felt like I was able to get consistent readings.
The kicker is I put the Koso in my Evo (car) and was tuning that but it was lagging in reading when I was approaching wot. Bought ANOTHER new señor and tried that but it was still very sluggish. Picked up an NGK that uses a common Bosch sensor and it reads 100x better and I feel much more comfortable tuning with it. Long story to say I liked the egt better but I may have a defective wide band skewing the results.
The kicker is I put the Koso in my Evo (car) and was tuning that but it was lagging in reading when I was approaching wot. Bought ANOTHER new señor and tried that but it was still very sluggish. Picked up an NGK that uses a common Bosch sensor and it reads 100x better and I feel much more comfortable tuning with it. Long story to say I liked the egt better but I may have a defective wide band skewing the results.
