Can you run cats with Longtubes?
- Thread starter igotyofire
- Start date
you can get both because it takes about 20 minutes to change and the non catted oen is cheap as hell.
lbut.... bump the fuel pressure way down for testing and lena the car out. raise initial up quite abit. you will have no problem. LTs like to run richer at idle because the 02 is so far away fomr the engine
lbut.... bump the fuel pressure way down for testing and lena the car out. raise initial up quite abit. you will have no problem. LTs like to run richer at idle because the 02 is so far away fomr the engine
Rootus
Officially Addicted
The problem with longtubes is the O2 sensors, not the cats. O2 sensors need to be at 600* or more to read properly, and with most longtubes they're so far away from the heads that they cool off at idle and start reading a false lean condition (this is most common when it's cool outside). Then the EEC adds fuel to compensate, and bam, you fail the sniffer...igotyofire said:
Dave
GTPhreak
Founding Member
Rootus
Officially Addicted
Ceramic definitely helps, but if it's less than 50* outside it'll still go rich. Go on a warm day 
Dave
Dave
BlackVert
15 Year Member
Sorry to be off topic, but:GTPhreak said:
Hey GTPhreak, I sent you a PM about those breaks you have for sale. I still want them. If email works better for you, I'm at [email protected].
- Chris
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