EGT Tuning

[airworks1]

Any of you guys have any experience with any of the exhaust gas monitoring tuning aids on the market. Trying to set my nitrous up and want to monitor everthing ( expensive motor )

 

[turbobusa2000]

Exhaust gas temperatures are hard to tune with. Do you mean a/f ratio?
I have an egt probe on my bike. As stated its not useful for tuning but can indicate problems if you know what to look for.

 

[airworks1]

That is what i was refering to as when I am on my local dyno at KWS my motor keeps showing the motor is too rich and when spraying 100 hp shot it only makes about 75-79 hp and showing 10.1 to 10.3 during the run

 

[busaonboost]

The only experience with that is when i went to MMI and that was part of one of our clinics. And all we used it for was was emissions. I say find a good tuner.

 

[Mr Bogus]

Exhaust gas temperatures are hard to tune with. Do you mean a/f ratio?
I have an egt probe on my bike. As stated its not useful for tuning but can indicate problems if you know what to look for.

I would strongly advise against tuning to EGT on a gas motor.. EGT is a monitor device and even at that can give you a false sense of security..

a gas analyzer with a dyno and a SHARP operator are the best tuning options IMHO... EGT's can be misleading if your mixture is way off either direction.. I have seen them read 800 on lean motors and 1250 or more on rich engines..

I like them mostly on turbo motors (especially diesel) as a monitor if things change..

 

[Commuta_Busa]

EGT you should try and stay at or below say 1150F and AFR I would shot for 11.5 or lower. It also depends on the application. I would stay cooler and maybe richer for high speed long duration runs spraying at the top of revs. I would probably set things up a little different for 1/4 mile (spraying sooner).

this is all just IMO

 

[mrracer98]

Hey... Not so sure for EGT's on 4-stroke bikes.. but I have used them extensively on 2 stroke snowmobile applications when racing. Like others say, useful for detecting a problem early. Though as good for tuning, at least on 4strokes... They run way different for temps, depending on the installer, applications, kind or probes, and where you mount them. Not sure what you planning, but The only time I beleive they are useful is when you monitor each cylinder independently. (I know some people put them in a Y pipe or interchange locations to monitor 2 probes for 4 cylinders... not very useful IMO). If you do use them, do some good research as to where to put them, and once you get them there, only pay attention to YOUR numbers... i.e. someone will say you are running cold at 850, but if you are mounted farther away from the exhaust valve than them, 850 may be hot for you.. Just my 0.02.