Quote:
Originally Posted by slownugly
Yea the vx tran is very low. I'm at 2k at about 65mph. It's becoming a popular swap with hxs. I believe it requires some driving style changes so a scan gauge would help a lot. I think it allows more flexibility with lean burn because guys were having trouble keeping their hxs in lean burn. I've never driven an hx so do some searching around. One build In particular was returning 60+ mpg.
Yea the 420 is a cat code. I've never seen an o2 cause a cat code. If an O2 is staying lean or rich it would throw a code specific to that. If you've ever seen data pids for oxygen sensors the front sensor normally switches between .2-.8 volts. The rear o2 looks for a change in voltage which indicates a chemical reaction and the converter is working properly. If both voltages are identical or almost identical it will throw a cat code because the ecu senses that the cat is no longer performing a chemical reaction. Check for exhaust leaks too. That may have the capability of throwin the code.
Our wideband o2s do not operate in the normal .2-.8 range but the cat monitoring is the same principle. I have 1 cat attached to one of my engines but I'm pretty sure it won't fit the hx.
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Wow, 60+ on an HX? That's insane. I'd be happy with 50. I may have to consider selling the HX trans for one of your VX's.
Thanks for the info on the o2's/cat. My scan tool doesn't read quick enough to see the switching, so I need to go to my buddies who has a nice Snap-On scanner (He's a Master Tech) if I ever need to check that. I'll start looking for a new cat at this point.
I'm still trying to do some grill blocks, rear bumper underblock, better front lip once I raise the car, and fix some stock aero issues (Removal of mud flaps, new driver side fender liner as it's missing, fix a rust hole, etc.). Having so many vehicles, a house, a fiance, and a Husky that's accident prone makes any mods hard to afford!