I put on test pipes the other day and now my vehicle is smoking pretty bad. Is this common with test pipes? DOes moving the O2 sensor out with the non-foulers cause this?
I dyno'd and my AF is still a little lean but, my tail pipes look like a chimney with all the soot.

 

thats normal, mine did it for a while, its just the tests pipes being broken in, its gonna stink like crap for a while too.

 

Perfectly normal.

 

Great! So it goes away? What causes this? The inside getting hot with oil?

 

you have to break in the test pipes meaning inside the pipes they have the new metal lining that burns after its heated when the car is in working temperature

then

since you have no cats, there isnt anything to trap the smoke and bad odor from the exhaust so... it smokes...

 

Damn i hope so B/C now it smokes like it has 300K miles on it and i bought it from Sanford and Son.

 

It's normal I had white smokes for 2 weeks when I first put on my resonated test pipes. After that, the smokes were gone...

 

its the oil burning off from the pipes...perfectly normal and will go away quickly

 

how much power did u get from the test pipes?? Big improvement on the dyno?

 

No, i gained 2 HP max but did get 4-5 overall over the whole curve except at top and the TQ was up over the whole curve until the end.
Also i did go from Kinetix HFC to these.

 

Damn, people in this forum claim to feel a big diff after installing this mod. Hmm..

why the switch from kinetix HFC to Test pipes??

 

I just dyno'ed yesterday to build more NA UTEC maps. Test pipes added 5peak whp over stock cats. The under curve suggested 4-7whp over stock cats. Torque improved by 7whp at the peak. The under curve suggested a 0-10 ft-lbs gain over stock cats between 3000 - 5000 rpm.

 

I have the UTEC on order. I'm hoping that i can play with the timing and the AF to get the HP and TQ that i should be getting.
I thought i would get more power from the pipes.

 

Larry, you still have the Kinetix HFCs?? Wanna sell them?

 

yea i do, want them?

 

I have Helix test pipes and mine never smoked that bad? I just smell the obvious rich exhaust. thats about it. Had them on the car for about 3000 miles. And really, only 5-7 hp/torque? Feels like more than that to me =(

From what I remmeber, it really picks up after 3000rpm but it might just be my mind playing tricks on me haha =)

 

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