68dustin

Ok i have a innovate lc1 with a db guage and i cant get this guage to slow down at all. It bounces between #'s at idle like crazy. Right now if i start it, it will bounce between 10-13 at idel. When i put a load on it, it will go between 13-10 sometimes 9 with a quick 16 in there. It moves so fast its really hard to tell what its doing. Just crusing it stays between 9-10. Anybody have any ideas??? I just want to make this thing work correctly! Where do you guys usually mount your widebands?? I have mine on some shorty headers by the collector and im wondering if that is too close? i have the guage hooked up correctly and calibrated correctly... just to let you know whats in the car: novi 1200, blow thru with 750 carb and a decent size cam with 513 lift, but cant remember duration..

mv577

I'll give this question a bump because I am having the same issue...

Any thoughts? Anyone?

Thanks in advance.

Mike

67mustang302

http://www.fuelairspark.com/Instructions/170450.pdf

That's for FAST's dual wideband data logger setup. The beginning of the second page has recommendations on sensor placement, and though it's for their system, it provides a few good general guidelines on placement. In the collector of LT's is a nice spot, but with shorties the concern is going to be the "no closer than 20 inches" part.

AirBrontosaurus

I have mine on the second O2 sensor bung, near the middle of the car. However, mine has readings like yours does. At idle I'm bouncing between 13.3-14.5, and cruising I hover at about 12-13. At WOT it goes to 10-11 or so.

Apparently grounding is a big deal with these kits. If your ground is off, the interference can cause erratic readings. However, from looking at youtube videos of the LC-1, I think it's going to bounce around at least somewhat no matter what you do. If the sensor samples quickly enough, combined with the pulses of the exhaust mixed with slight differences in the mechanics of your engine, it's logical that you will get varying readings. No 2 cylinders/pistons/valves are exactly the same, and when you have 8 of them going at the same time, a bit of variation seems like it would be normal.

68dustin

i've moved the ground from inside the car to the bell housing and block. So the ground should be good. Ive also move the bung pretty far back, but it still is all over the place. I personally think these widebands are crap!! Ive made some wot passes and the wideband says into the 10's which is super rich, but when i pulled my plugs it was showing pretty lean! no carbon build up what so ever.