dual EGTs or one w/b!?

[caindo]

one egt at the end of each bank (pre-turbo obviously) or one wideband after turbo??!!?

 

[azgn]

one egt is plenty unless you have a sequential DFI and can change the a/f on each cylinder......it is a relative reading that you use to adjust your tune

a wideband is prolly more useful, although that too is a relative indicator.....

obviously an egt would be cheaper than a wideband......guess it would depend on how much you want to spend and how familiar you are with your car

 

[caindo]

yes i have the tuner and the ability to skew fuel on any injector i please. someone said an EGT is useless after about 500hp..?
i can get a dual probe egt w/gauge for the same as i can a wideband. im just puzzled which i can tune better with.

 

[top gun]

If you only have 2 probes I would put them in the #5 and 6 header tube a inch or 2 from the head.

 

[azgn]

well, if you can adjust the a/f on each cylinder, I'd put an egt probe in every hole and find the temp that the car runs best........2 egts won't do it

all a wideband is gonna do give you is an indication of your a/f....you still have to tune for the best performance regardless of what the gauge says...once set, it becomes useful to account for different conditions

the "best" of all worlds would have 02 input to the ecm to make on the fly adjustments so you don't hurt things and an egt to watch temps.....that is essentially what the available dfi systems (FAST, XFI, MOTRON etc) do

I make considerably more than 500 hp and still record my egts on every run.....it'll indicate problems as reliably as the FAST, since I know what is "normal"

the more tools you have, the better.....my personal preference would be for the egt and knock indicator of some type

 

[caindo]

yeah my laptop/scanner has audible alarms setup for knock.

i cant find a 6 probe setup... point me!



and why 5 and 6? i understand its the rear of each bank, but directly at that exit point, not down a few inches?

 

[azgn]

they are out there (multi probe sensors) but the one I saw locally on a TSM car didn't process the inputs very well.......however, the new XFI could accept these inputs and go to town (sequential version)

 

[caindo]

my scanner/tuner has an AUX in but just one... i've seen EGT gauges up to 4 at once on the same gauge. i've also seen an 8 egt kit, for 1 grand.

 

[top gun]

yeah my laptop/scanner has audible alarms setup for knock.

i cant find a 6 probe setup... point me!



and why 5 and 6? i understand its the rear of each bank, but directly at that exit point, not down a few inches?

5 and 6 tend to be the lean holes, if you have those in control the others should be fine. Race Pack Data loggers has a 6 bank egt along with many other sensors fuel pressure, oil pressure,back pressure,driveshaft etc.

 

[caindo]

good info. although on my series II 3800 chevy motor, 3 and 4 tend to be our leanest.

i'll look into Race Pack, good lookin out.

oh yeah, heres my lil girl

http://img.photobucket.com/albums/v621/ahatedguy/turbo/moreturbo002.jpg

8:1 forged, !balance shaft, balanced, full P&P heads w/ o/s valves, custom cam, a2a i/c, alky injection, 65#injs, p&p manifolds (black satin 2000f ceramic coating), etc etc etc.

 

[caindo]

i cant find Race Pack Data loggers or anything.. throw me an email or something please and thank you.

lasvegascamino@yahoo.com

 

[nocutt]

Hey John, you will need something with multi-channel capabilities...this are what I could come up with. Greddy also makes EGT's for the life of me...I cannot remember if they are Multi-Ch though.

http://www.pacific-coast-avionics.com/detail.asp?id=4152

http://www.buy-ei.com/Multiple.htm

...Also a slight correction on the L67...cyl 3 and 4 are indeed the trouble spots...however the L36 tend to be on 5 n 6...

 

[GNVYUS 1]

Wideband no doubt.

You can not tune anything but WOT with the EGT and unless you have a standalone computer you are not going to be able to dial in each cylinder anyways.

I had one and aside from the autometer going out on me every 6 months felt it was a waste of money.

 

[caindo]

i found me a nice 6cyl egt setup that im going to use.
and yes, as stated above i have the means of tuning each injector/cyl
i can tune cruise and idle by the likes of stft and ltft and narrow band.

 

[nocutt]

Jon YGM...

 

[Fuelie600]

One thing to consider----EGT's are slower responding to change in mixture than WBO2's.

 

[808 87 WE2]

i cant find Race Pack Data loggers or anything.. throw me an email or something please and thank you.

lasvegascamino@yahoo.com

its racepak..these are data loggers for the hard core drag racers..your looking at $2k+ just to get started

more info at www.racepak.com