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P0420 from my Berk Metallic HFCs

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Old 04-20-2009, 03:18 PM
  #101  
hellsoldiers08
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Hey solo i think i saw you one time on thousand oaks. I also use Shell Gas and compared to any other gas stations the shell gives me most miles for the buck. I get around 300 miles to a tank(75%city 25% Driving to Sac down town). O, i also have test pipes and i never seen a performance degrade just that annoying bog from 2,200k to 3k Rpms.

Just my 2cents
Old 04-20-2009, 03:27 PM
  #102  
SOLO-350Z
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Yep. I live off Thousand Oaks.

I use to get that bog till I got tuned now it's smooth. I also noticed gas mileage is better with Shell.
Old 04-20-2009, 03:29 PM
  #103  
SOLO-350Z
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Originally Posted by 0jiggy0
ITs all in your head buddy. Code 420 doesnt affect performance in ANY car. It is just an indicator that shows if the CAT is working properly or not.
Really? Seems to me the ECU puts the car into a safe parameter mode. I even asked UPREV this and they agreed.
Old 04-20-2009, 04:09 PM
  #104  
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Hey how much you getting now with uprev tune because we kinda got the same performance upgrade on the exhaust. I kinda want to see if i should wait longer till i get uprev tune.
Old 04-20-2009, 04:14 PM
  #105  
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Got a nice boost in power. Not exactly sure because they tuned my car stock and it only gained 5 hp midrange and 8 hp up top. But once the bolt ons go on and they keep adjusting my tune it keeps getting better. I would personally wait till you get all the bolt ons like intake, exhaust, spacer, hfc, etc and then get a tune and you will see a nice increase.
Old 04-20-2009, 04:21 PM
  #106  
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Ya, thats what i been thinking. Although i may get cipher just to clear the code for that stupid engine light to come on.
Old 04-20-2009, 04:34 PM
  #107  
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Originally Posted by hellsoldiers08
Ya, thats what i been thinking. Although i may get cipher just to clear the code for that stupid engine light to come on.
its gotta be the berks.

i have stillens w/Brillo Padding and haven got a SES light for Months.

I also just came back From Las Vegas(500-600 miles round trip) and Nothing!












(EXCEPT A SPEEDING TICKET)
Old 04-20-2009, 04:36 PM
  #108  
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lol i dont have berks i have fast intentions resonated test pipes...
Old 04-20-2009, 05:37 PM
  #109  
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Originally Posted by IsDatIt
its gotta be the berks.

i have stillens w/Brillo Padding and haven got a SES light for Months.
I have had my Berks for 1 year and only had the CEL come on once.
Old 04-20-2009, 05:38 PM
  #110  
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The Brillo padding is what is helping you. That is all that you need to fix the Berks.

Originally Posted by IsDatIt
its gotta be the berks.

i have stillens w/Brillo Padding and haven got a SES light for Months.

I also just came back From Las Vegas(500-600 miles round trip) and Nothing!












(EXCEPT A SPEEDING TICKET)
Old 04-25-2009, 05:13 PM
  #111  
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2 tanks of gas, no lights. SS Wool and BG helped.
Old 05-02-2009, 11:57 AM
  #112  
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my CEL just came back on again. i'm gonna go ahead and put the SS wool in that berk sent me a few weeks ago. how exactly do i do this? do i unscrew the sensor, and wrap the actual sensor? or do i unscrew the sensor and stuff the hole with the SS wool? i don't want any surprises when i'm under my car and i'd rather not have to do it twice, so if anybody who has done this can chime in i would appreciate it..
Old 05-02-2009, 12:21 PM
  #113  
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Disconnect the O2, then unscrew it. Stuff half of the SS wool they sent you in the hole. Screw the O2 back in and connect it back up. Then do the other side with the rest of the SS wool.
Old 06-07-2009, 02:29 PM
  #114  
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has anyone tried GTM test pipes and CEL didnt show up (keyword possible)?

"Extended 02 Sensor mounting location prevents a possible Check Engline Light from appearing."

http://g t m otorsports.com/product.php?productid=17332&cat=298&page=1
Old 06-07-2009, 10:51 PM
  #115  
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so far the gtm does not seem to be throwing a cel. at least thats the last i heard. i have had no problem with the ss stuffing in my high flows. my boy just traded in his 07 that had my old test pipes stuffed and he had 7k miles and no problems. not to mention the 2k i put on them when i installed them
Old 06-08-2009, 06:43 AM
  #116  
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is that person with the GTM TP's on here?

I might give it a shot if it does the trick. Only thing is, if it doesn't work, I'd spent $145+ on TP's alone since I can get Berk's at 215$ shipped and GTM's are 359+shipping
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