[Gmecm] EGT tuning (was BIG CAM TUNING)

[Jay Vessels]

Hi there!

A gas analyzer would be the best bet but it's not as fast as a WB so 
you're probably going to only use it for a dyno with a brake.  EGT is 
okay but you can't tell whether you're way rich or way lean since EGT 
can rise on either side of good.  Considering EGT thermocouples are 
cheaper than WB sensors, I'd guess that if they were really accurate the 
OEMs would have jumped on them by now.

Just saw in a recent issue of Hot Rod magazine about a company selling a 
1 WB-per-cylinder kit in a resonable (for WB) pricing schedule.  Still 
pricey for the homebrew but if you have a dyno in your shop it's 
probably justifiable and within reach.

Jay Vessels
1982 Chevrolet S-10 Sport, 2.8V6 TBI
1984 Chevrolet S-10 Blazer Sport, 2.8V6 carb. (for now)

Robert Fleming wrote:
> Have you done much dyno tuning with an EGT?  Sounds
> like a good idea but I've talked to a few people who
> dyno tune all the time and say its sort of worthless
> unless you run an EGT at each exhaust port.
> 
> Robert