TEST PIPES ON 04 AND CEL

[blusky]

Originally Posted by Bashar368

Does this really work

yup. its been passed down from generation to generation. Under extended load or racing conditions, it is possible to throw a code, but you can clear it at your local pep boys. Should read something along the lines of left bank...

[jayqwon]

do yu need to get an angled o2 sensor or a straight?

[jayqwon]

do straight o2 sensors work? or do you have to get angled ones?

[elperuano]

gonna bring this thread back to life (hopefully) Is it ok to continue driving after the service engine soon light comes on after installing test pipes? 06 gmt here and service engine soon light came on day of installing test pipe.. gonna get it fixed soon just wanna make sure if its ok to drive wit it on ur should i keep it parked til i get the antifouler?

[smokincoupe]

it will be fine

[dbroncos]

does having a CEL light on due to o2 sensing unburnt fuel hurt ur engine performance at all or is it just to tell u that your exhaust is putting out too much bad fumes? if it doesn't hurt performance by screwin with the air/fuel ratio then it shouldn't matter, just ignore the light right?

[kennymo]

i see a couple of you are saying something about drilling out the fauler things. what needs to be drilled? i dont get it

[G GS]

Hello. I recently changed out my Helix test pipes for my OEM cats again but the 02 sensor on the left cat was stripped, so now I'm driving with one missing 02 sensor. How would this affect my car in general and performance wise and is it ok to drive with a missing 02 sensor from the cat? Thanks in advance

[YourKuh]

What are the pros and cons of the test pipes? in your guys opinion is it worth it ? just wondering ( im about to MAYBE get a set)

[hamerykon7]

Pros:
- Performance WAY better than stock cats
- Performance a tad better than HFC's
- One of the only bang for your buck mods for a g35
- Increased sound levels

Cons:
- Gas smell when stopped and windows down
- Possible CEL
- Possible rasp ( Eliminated to minimum with resonated test pipes )

In my opinion the mod is def worth it.

[YourKuh]

thanks hamerykon....

for anyone that has these .....

Did the sound of the exhaust change your response to...

"man that sounds F@#$'n Awesome!"
or
"..that sounds like Crap man..."

[G GS]

YourKuh, there's definitely some rasp with the test pipes. When I first installed my Helix test pipes it was pretty raspy but not exactly annoying. However, with time (I'd say a few thousand miles) the rasp died down. I even grew to like it. With the stock exhaust, at cold startup the sound is deeper. At around 2500-4000 rpm the exhaust note is a tad bit louder but dies down at higher rpms with moderate acceleration. At WOT on the other hand is slightly louder, not necessarily deeper, than stock. I'm not sure if this is the same as other test pipes however. Overall, I liked the addition of the test pipes, but I did notice the car consumed more gas over stock.