Another set has been sent out for testing on a G37.
Hopefully they will be installed this weekend.

I'll post the results as soon as they come in.

 

I got them from partsource (edmonton, canada i'm here on vacation) they should have them in pepboys/autozone in the states... they are 18MM. I got mine for 8.50 a set.

 

ok thanks =D

 

Just reached 600 miles since installing non-foulers for my HFC CEL issue. So far all is clear, and my fuel mileage has gone from an average of 21 (combined city/highway) to 26!!! It seems as though I must have been running really rich to net such a result.

So all you HR owners planning to get HFCs, plan on getting non-foulers just to be on the safe side!!

 

Are these still working i.e. no CEL/SES lights? Do you have the part #?

 

Let me know if you need another test mule. I've got an '06 with a non-revup (5AT).

 

I got about 590+miles after the SES reset/after i drilled a bigger hole on the non foulers... it works for me, but sorry i don't have any part numbers. Just tell them 18mm non foulers, it should say right on the packaging.

 

Bump for an update from Hydrazine . . .

 

What are the codes on your CEL?

 

I don't remember since it's been several weeks but it had something to do with the 02 sensors. I'll take the car back to the shop to have them read the code again.

 

Hydrazine, any updates?

 

No. I'm having trouble finding 07 and 08 CEL's with confirmed catalytic efficency codes.

More test cars are needed.

 

ok have the non foulers on mine. which hole did you drill bigger the one that goes into the cat itself? i let the stock hole in the bottom peice. how much bigger did you drill it if this is what you are talking about?

 

Hydrazine what are the codes as i sent you the codes i have in pm. i also have a set of gaskets i have to put on my car tomorrow instead of high temp silicon.

 

Are the subjects that have requests the prototype test model not reporting back, or do they just not have the right symptoms?

 

I can't remember.
With so many PM's I have to periodically delete them.

Let me know how your install goes.

 

1 not reporting back, 1 partial report back (inconclusive), 1 report back air leak code.

Overall... inconclusive.
We need clear cases of catalytic inefficency CEL codes on 07 and 08.

 

so ok, my CEL light finally went off today with 2362miles from the last reset. But this time it's showing 1164 and 1166? Manufacturer Fuel Trim??? not like the usuall 1121 code... anybody knows what the heck it is now? heated sensors???

 

P1164 Heated O2 Sensor 1

P1166 Heated O2 Sensor 2


I get these codes when the sensors are unplugged.

 

I reseted the codes and currently have 49miles on it. No mileage difference. What does this means? my heated sensors are going bad?