Wassup ya'll! after a few months of collecting a few parts and about a month and half at honda-tech, i am getting close to finally piecing my custom/junkyard turbo together! i got the basics down but still have a few questions laying around. first, what is the difference between a pyrometer and an egt gauge? i checked the Autometer website and they seem completely different. Anyone care to enlighten me on this? also, from what i've been reading, i learned that autometer's a/f gauge is pretty pointless and a waste of money. what are my options? i've been to the diy wideband site but that thing looks way too complicated for me and can't really cough up $500.00+ for a built one. what are my options on measuring fuel ratio so i won't blow up my car? hope you guys can help out. thanx

 

I've had the best luck tuning with wideband O2 sensors but I have gotten by with a "good" EGT guage. By good, I don't mean Autometer's EGT. I usually stick to Greddy EGT's but have used others with similar results. Apex, Defi, Blitz, etc. also have good EGT guages.
On Honda engines, the EGT probe is usually placed in the #3 exhaust runner within 1" (closer is better IMO) from the header flange.

EGT versus Pyrometer donno I never looked into it before, I have always used EGT's. Sorry I'm not much help there. But I do agree that the Autometer A/F ratio guage is a not the best choice.

Good luck on your turbo kit

 

A pyrometer is an EGT gauge. If you look real close at the Autometer EGT gauge it says pyrometer on the bottom. The autometer A/F does suck and it's worthless.